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synced 2024-08-22 04:33:22 +02:00
The new format accepts exactly the same data as the json type. However, it is stored in a format that does not require reparsing the orgiginal text in order to process it, making it much more suitable for indexing and other operations. Insignificant whitespace is discarded, and the order of object keys is not preserved. Neither are duplicate object keys kept - the later value for a given key is the only one stored. The new type has all the functions and operators that the json type has, with the exception of the json generation functions (to_json, json_agg etc.) and with identical semantics. In addition, there are operator classes for hash and btree indexing, and two classes for GIN indexing, that have no equivalent in the json type. This feature grew out of previous work by Oleg Bartunov and Teodor Sigaev, which was intended to provide similar facilities to a nested hstore type, but which in the end proved to have some significant compatibility issues. Authors: Oleg Bartunov, Teodor Sigaev, Peter Geoghegan and Andrew Dunstan. Review: Andres Freund
1510 lines
31 KiB
Plaintext
1510 lines
31 KiB
Plaintext
CREATE EXTENSION hstore;
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set escape_string_warning=off;
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--hstore;
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select ''::hstore;
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hstore
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--------
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(1 row)
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select 'a=>b'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select ' a=>b'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select 'a =>b'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select 'a=>b '::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select 'a=> b'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select '"a"=>"b"'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select ' "a"=>"b"'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select '"a" =>"b"'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select '"a"=>"b" '::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select '"a"=> "b"'::hstore;
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hstore
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----------
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"a"=>"b"
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(1 row)
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select 'aa=>bb'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select ' aa=>bb'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select 'aa =>bb'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select 'aa=>bb '::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select 'aa=> bb'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select '"aa"=>"bb"'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select ' "aa"=>"bb"'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select '"aa" =>"bb"'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select '"aa"=>"bb" '::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select '"aa"=> "bb"'::hstore;
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hstore
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------------
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"aa"=>"bb"
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(1 row)
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select 'aa=>bb, cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>bb , cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>bb ,cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>bb, "cc"=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>bb , "cc"=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>bb ,"cc"=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>"bb", cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>"bb" , cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>"bb" ,cc=>dd'::hstore;
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hstore
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------------------------
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"aa"=>"bb", "cc"=>"dd"
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(1 row)
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select 'aa=>null'::hstore;
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hstore
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------------
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"aa"=>NULL
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(1 row)
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select 'aa=>NuLl'::hstore;
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hstore
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------------
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"aa"=>NULL
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(1 row)
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select 'aa=>"NuLl"'::hstore;
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hstore
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--------------
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"aa"=>"NuLl"
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(1 row)
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select e'\\=a=>q=w'::hstore;
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hstore
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-------------
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"=a"=>"q=w"
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(1 row)
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select e'"=a"=>q\\=w'::hstore;
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hstore
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-------------
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"=a"=>"q=w"
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(1 row)
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select e'"\\"a"=>q>w'::hstore;
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hstore
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--------------
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"\"a"=>"q>w"
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(1 row)
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select e'\\"a=>q"w'::hstore;
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hstore
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---------------
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"\"a"=>"q\"w"
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(1 row)
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select ''::hstore;
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hstore
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--------
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(1 row)
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select ' '::hstore;
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hstore
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--------
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(1 row)
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-- -> operator
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select 'aa=>b, c=>d , b=>16'::hstore->'c';
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?column?
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----------
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d
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(1 row)
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select 'aa=>b, c=>d , b=>16'::hstore->'b';
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?column?
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----------
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16
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(1 row)
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select 'aa=>b, c=>d , b=>16'::hstore->'aa';
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?column?
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----------
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b
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(1 row)
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select ('aa=>b, c=>d , b=>16'::hstore->'gg') is null;
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?column?
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----------
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t
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(1 row)
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select ('aa=>NULL, c=>d , b=>16'::hstore->'aa') is null;
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?column?
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----------
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t
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(1 row)
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select ('aa=>"NULL", c=>d , b=>16'::hstore->'aa') is null;
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?column?
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----------
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f
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(1 row)
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-- -> array operator
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select 'aa=>"NULL", c=>d , b=>16'::hstore -> ARRAY['aa','c'];
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?column?
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------------
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{"NULL",d}
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(1 row)
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select 'aa=>"NULL", c=>d , b=>16'::hstore -> ARRAY['c','aa'];
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?column?
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------------
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{d,"NULL"}
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(1 row)
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select 'aa=>NULL, c=>d , b=>16'::hstore -> ARRAY['aa','c',null];
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?column?
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---------------
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{NULL,d,NULL}
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(1 row)
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select 'aa=>1, c=>3, b=>2, d=>4'::hstore -> ARRAY[['b','d'],['aa','c']];
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?column?
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---------------
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{{2,4},{1,3}}
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(1 row)
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-- exists/defined
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select exist('a=>NULL, b=>qq', 'a');
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exist
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-------
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t
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(1 row)
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select exist('a=>NULL, b=>qq', 'b');
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exist
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-------
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t
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(1 row)
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select exist('a=>NULL, b=>qq', 'c');
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exist
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-------
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f
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(1 row)
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select exist('a=>"NULL", b=>qq', 'a');
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exist
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-------
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t
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(1 row)
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select defined('a=>NULL, b=>qq', 'a');
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defined
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---------
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f
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(1 row)
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select defined('a=>NULL, b=>qq', 'b');
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defined
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---------
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t
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(1 row)
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select defined('a=>NULL, b=>qq', 'c');
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defined
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---------
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f
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(1 row)
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select defined('a=>"NULL", b=>qq', 'a');
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defined
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---------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ? 'a';
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ? 'b';
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ? 'c';
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?column?
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----------
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f
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(1 row)
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select hstore 'a=>"NULL", b=>qq' ? 'a';
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?| ARRAY['a','b'];
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?| ARRAY['b','a'];
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?| ARRAY['c','a'];
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?| ARRAY['c','d'];
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?column?
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----------
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f
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?| '{}'::text[];
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?column?
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----------
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f
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?& ARRAY['a','b'];
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?& ARRAY['b','a'];
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?column?
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----------
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t
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?& ARRAY['c','a'];
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?column?
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----------
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f
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?& ARRAY['c','d'];
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?column?
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----------
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f
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(1 row)
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select hstore 'a=>NULL, b=>qq' ?& '{}'::text[];
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?column?
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----------
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t
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(1 row)
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-- delete
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select delete('a=>1 , b=>2, c=>3'::hstore, 'a');
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delete
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--------------------
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"b"=>"2", "c"=>"3"
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(1 row)
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select delete('a=>null , b=>2, c=>3'::hstore, 'a');
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delete
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--------------------
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"b"=>"2", "c"=>"3"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, 'b');
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delete
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--------------------
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"a"=>"1", "c"=>"3"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, 'c');
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delete
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--------------------
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"a"=>"1", "b"=>"2"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, 'd');
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delete
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - 'a'::text;
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?column?
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--------------------
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"b"=>"2", "c"=>"3"
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(1 row)
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select 'a=>null , b=>2, c=>3'::hstore - 'a'::text;
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?column?
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--------------------
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"b"=>"2", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - 'b'::text;
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?column?
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--------------------
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"a"=>"1", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - 'c'::text;
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?column?
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--------------------
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"a"=>"1", "b"=>"2"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - 'd'::text;
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?column?
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select pg_column_size('a=>1 , b=>2, c=>3'::hstore - 'b'::text)
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= pg_column_size('a=>1, b=>2'::hstore);
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?column?
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----------
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t
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(1 row)
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-- delete (array)
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select delete('a=>1 , b=>2, c=>3'::hstore, ARRAY['d','e']);
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delete
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, ARRAY['d','b']);
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delete
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--------------------
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"a"=>"1", "c"=>"3"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, ARRAY['a','c']);
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delete
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----------
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"b"=>"2"
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, ARRAY[['b'],['c'],['a']]);
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delete
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--------
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(1 row)
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select delete('a=>1 , b=>2, c=>3'::hstore, '{}'::text[]);
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delete
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - ARRAY['d','e'];
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?column?
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - ARRAY['d','b'];
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?column?
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--------------------
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"a"=>"1", "c"=>"3"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - ARRAY['a','c'];
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?column?
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----------
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"b"=>"2"
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - ARRAY[['b'],['c'],['a']];
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?column?
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----------
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(1 row)
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select 'a=>1 , b=>2, c=>3'::hstore - '{}'::text[];
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?column?
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------------------------------
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"a"=>"1", "b"=>"2", "c"=>"3"
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(1 row)
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select pg_column_size('a=>1 , b=>2, c=>3'::hstore - ARRAY['a','c'])
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= pg_column_size('b=>2'::hstore);
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?column?
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----------
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t
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(1 row)
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select pg_column_size('a=>1 , b=>2, c=>3'::hstore - '{}'::text[])
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= pg_column_size('a=>1, b=>2, c=>3'::hstore);
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?column?
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----------
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t
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(1 row)
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-- delete (hstore)
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select delete('aa=>1 , b=>2, c=>3'::hstore, 'aa=>4, b=>2'::hstore);
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delete
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---------------------
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"c"=>"3", "aa"=>"1"
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(1 row)
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select delete('aa=>1 , b=>2, c=>3'::hstore, 'aa=>NULL, c=>3'::hstore);
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delete
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---------------------
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"b"=>"2", "aa"=>"1"
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(1 row)
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select delete('aa=>1 , b=>2, c=>3'::hstore, 'aa=>1, b=>2, c=>3'::hstore);
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delete
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--------
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(1 row)
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select delete('aa=>1 , b=>2, c=>3'::hstore, 'b=>2'::hstore);
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delete
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---------------------
|
|
"c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select delete('aa=>1 , b=>2, c=>3'::hstore, ''::hstore);
|
|
delete
|
|
-------------------------------
|
|
"b"=>"2", "c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, c=>3'::hstore - 'aa=>4, b=>2'::hstore;
|
|
?column?
|
|
---------------------
|
|
"c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, c=>3'::hstore - 'aa=>NULL, c=>3'::hstore;
|
|
?column?
|
|
---------------------
|
|
"b"=>"2", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, c=>3'::hstore - 'aa=>1, b=>2, c=>3'::hstore;
|
|
?column?
|
|
----------
|
|
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, c=>3'::hstore - 'b=>2'::hstore;
|
|
?column?
|
|
---------------------
|
|
"c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, c=>3'::hstore - ''::hstore;
|
|
?column?
|
|
-------------------------------
|
|
"b"=>"2", "c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select pg_column_size('a=>1 , b=>2, c=>3'::hstore - 'b=>2'::hstore)
|
|
= pg_column_size('a=>1, c=>3'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size('a=>1 , b=>2, c=>3'::hstore - ''::hstore)
|
|
= pg_column_size('a=>1, b=>2, c=>3'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
-- ||
|
|
select 'aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f';
|
|
?column?
|
|
-------------------------------------------
|
|
"b"=>"g", "aa"=>"1", "cq"=>"l", "fg"=>"f"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, cq=>3'::hstore || 'aq=>l';
|
|
?column?
|
|
-------------------------------------------
|
|
"b"=>"2", "aa"=>"1", "aq"=>"l", "cq"=>"3"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, cq=>3'::hstore || 'aa=>l';
|
|
?column?
|
|
--------------------------------
|
|
"b"=>"2", "aa"=>"l", "cq"=>"3"
|
|
(1 row)
|
|
|
|
select 'aa=>1 , b=>2, cq=>3'::hstore || '';
|
|
?column?
|
|
--------------------------------
|
|
"b"=>"2", "aa"=>"1", "cq"=>"3"
|
|
(1 row)
|
|
|
|
select ''::hstore || 'cq=>l, b=>g, fg=>f';
|
|
?column?
|
|
--------------------------------
|
|
"b"=>"g", "cq"=>"l", "fg"=>"f"
|
|
(1 row)
|
|
|
|
select pg_column_size(''::hstore || ''::hstore) = pg_column_size(''::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size('aa=>1'::hstore || 'b=>2'::hstore)
|
|
= pg_column_size('aa=>1, b=>2'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size('aa=>1, b=>2'::hstore || ''::hstore)
|
|
= pg_column_size('aa=>1, b=>2'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size(''::hstore || 'aa=>1, b=>2'::hstore)
|
|
= pg_column_size('aa=>1, b=>2'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
-- hstore(text,text)
|
|
select 'a=>g, b=>c'::hstore || hstore('asd', 'gf');
|
|
?column?
|
|
---------------------------------
|
|
"a"=>"g", "b"=>"c", "asd"=>"gf"
|
|
(1 row)
|
|
|
|
select 'a=>g, b=>c'::hstore || hstore('b', 'gf');
|
|
?column?
|
|
---------------------
|
|
"a"=>"g", "b"=>"gf"
|
|
(1 row)
|
|
|
|
select 'a=>g, b=>c'::hstore || hstore('b', 'NULL');
|
|
?column?
|
|
-----------------------
|
|
"a"=>"g", "b"=>"NULL"
|
|
(1 row)
|
|
|
|
select 'a=>g, b=>c'::hstore || hstore('b', NULL);
|
|
?column?
|
|
---------------------
|
|
"a"=>"g", "b"=>NULL
|
|
(1 row)
|
|
|
|
select ('a=>g, b=>c'::hstore || hstore(NULL, 'b')) is null;
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size(hstore('b', 'gf'))
|
|
= pg_column_size('b=>gf'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size('a=>g, b=>c'::hstore || hstore('b', 'gf'))
|
|
= pg_column_size('a=>g, b=>gf'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
-- slice()
|
|
select slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['g','h','i']);
|
|
slice
|
|
-------
|
|
|
|
(1 row)
|
|
|
|
select slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['c','b']);
|
|
slice
|
|
--------------------
|
|
"b"=>"2", "c"=>"3"
|
|
(1 row)
|
|
|
|
select slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['aa','b']);
|
|
slice
|
|
---------------------
|
|
"b"=>"2", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['c','b','aa']);
|
|
slice
|
|
-------------------------------
|
|
"b"=>"2", "c"=>"3", "aa"=>"1"
|
|
(1 row)
|
|
|
|
select pg_column_size(slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['c','b']))
|
|
= pg_column_size('b=>2, c=>3'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select pg_column_size(slice(hstore 'aa=>1, b=>2, c=>3', ARRAY['c','b','aa']))
|
|
= pg_column_size('aa=>1, b=>2, c=>3'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
-- array input
|
|
select '{}'::text[]::hstore;
|
|
hstore
|
|
--------
|
|
|
|
(1 row)
|
|
|
|
select ARRAY['a','g','b','h','asd']::hstore;
|
|
ERROR: array must have even number of elements
|
|
select ARRAY['a','g','b','h','asd','i']::hstore;
|
|
array
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select ARRAY[['a','g'],['b','h'],['asd','i']]::hstore;
|
|
array
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select ARRAY[['a','g','b'],['h','asd','i']]::hstore;
|
|
ERROR: array must have two columns
|
|
select ARRAY[[['a','g'],['b','h'],['asd','i']]]::hstore;
|
|
ERROR: wrong number of array subscripts
|
|
select hstore('{}'::text[]);
|
|
hstore
|
|
--------
|
|
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['a','g','b','h','asd']);
|
|
ERROR: array must have even number of elements
|
|
select hstore(ARRAY['a','g','b','h','asd','i']);
|
|
hstore
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select hstore(ARRAY[['a','g'],['b','h'],['asd','i']]);
|
|
hstore
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select hstore(ARRAY[['a','g','b'],['h','asd','i']]);
|
|
ERROR: array must have two columns
|
|
select hstore(ARRAY[[['a','g'],['b','h'],['asd','i']]]);
|
|
ERROR: wrong number of array subscripts
|
|
select hstore('[0:5]={a,g,b,h,asd,i}'::text[]);
|
|
hstore
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select hstore('[0:2][1:2]={{a,g},{b,h},{asd,i}}'::text[]);
|
|
hstore
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
-- pairs of arrays
|
|
select hstore(ARRAY['a','b','asd'], ARRAY['g','h','i']);
|
|
hstore
|
|
--------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>"i"
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['a','b','asd'], ARRAY['g','h',NULL]);
|
|
hstore
|
|
---------------------------------
|
|
"a"=>"g", "b"=>"h", "asd"=>NULL
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['z','y','x'], ARRAY['1','2','3']);
|
|
hstore
|
|
------------------------------
|
|
"x"=>"3", "y"=>"2", "z"=>"1"
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['aaa','bb','c','d'], ARRAY[null::text,null,null,null]);
|
|
hstore
|
|
-----------------------------------------------
|
|
"c"=>NULL, "d"=>NULL, "bb"=>NULL, "aaa"=>NULL
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['aaa','bb','c','d'], null);
|
|
hstore
|
|
-----------------------------------------------
|
|
"c"=>NULL, "d"=>NULL, "bb"=>NULL, "aaa"=>NULL
|
|
(1 row)
|
|
|
|
select quote_literal(hstore('{}'::text[], '{}'::text[]));
|
|
quote_literal
|
|
---------------
|
|
''
|
|
(1 row)
|
|
|
|
select quote_literal(hstore('{}'::text[], null));
|
|
quote_literal
|
|
---------------
|
|
''
|
|
(1 row)
|
|
|
|
select hstore(ARRAY['a'], '{}'::text[]); -- error
|
|
ERROR: arrays must have same bounds
|
|
select hstore('{}'::text[], ARRAY['a']); -- error
|
|
ERROR: arrays must have same bounds
|
|
select pg_column_size(hstore(ARRAY['a','b','asd'], ARRAY['g','h','i']))
|
|
= pg_column_size('a=>g, b=>h, asd=>i'::hstore);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
-- records
|
|
select hstore(v) from (values (1, 'foo', 1.2, 3::float8)) v(a,b,c,d);
|
|
hstore
|
|
--------------------------------------------
|
|
"a"=>"1", "b"=>"foo", "c"=>"1.2", "d"=>"3"
|
|
(1 row)
|
|
|
|
create domain hstestdom1 as integer not null default 0;
|
|
create table testhstore0 (a integer, b text, c numeric, d float8);
|
|
create table testhstore1 (a integer, b text, c numeric, d float8, e hstestdom1);
|
|
insert into testhstore0 values (1, 'foo', 1.2, 3::float8);
|
|
insert into testhstore1 values (1, 'foo', 1.2, 3::float8);
|
|
select hstore(v) from testhstore1 v;
|
|
hstore
|
|
------------------------------------------------------
|
|
"a"=>"1", "b"=>"foo", "c"=>"1.2", "d"=>"3", "e"=>"0"
|
|
(1 row)
|
|
|
|
select hstore(null::testhstore0);
|
|
hstore
|
|
--------------------------------------------
|
|
"a"=>NULL, "b"=>NULL, "c"=>NULL, "d"=>NULL
|
|
(1 row)
|
|
|
|
select hstore(null::testhstore1);
|
|
hstore
|
|
-------------------------------------------------------
|
|
"a"=>NULL, "b"=>NULL, "c"=>NULL, "d"=>NULL, "e"=>NULL
|
|
(1 row)
|
|
|
|
select pg_column_size(hstore(v))
|
|
= pg_column_size('a=>1, b=>"foo", c=>"1.2", d=>"3", e=>"0"'::hstore)
|
|
from testhstore1 v;
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('c', '3.45')) from testhstore1 v;
|
|
populate_record
|
|
------------------
|
|
(1,foo,3.45,3,0)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('d', '3.45')) from testhstore1 v;
|
|
populate_record
|
|
--------------------
|
|
(1,foo,1.2,3.45,0)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('e', '123')) from testhstore1 v;
|
|
populate_record
|
|
-------------------
|
|
(1,foo,1.2,3,123)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('e', null)) from testhstore1 v;
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select populate_record(v, hstore('c', null)) from testhstore1 v;
|
|
populate_record
|
|
-----------------
|
|
(1,foo,,3,0)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('b', 'foo') || hstore('a', '123')) from testhstore1 v;
|
|
populate_record
|
|
-------------------
|
|
(123,foo,1.2,3,0)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('b', 'foo') || hstore('e', null)) from testhstore0 v;
|
|
populate_record
|
|
-----------------
|
|
(1,foo,1.2,3)
|
|
(1 row)
|
|
|
|
select populate_record(v, hstore('b', 'foo') || hstore('e', null)) from testhstore1 v;
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select populate_record(v, '') from testhstore0 v;
|
|
populate_record
|
|
-----------------
|
|
(1,foo,1.2,3)
|
|
(1 row)
|
|
|
|
select populate_record(v, '') from testhstore1 v;
|
|
populate_record
|
|
-----------------
|
|
(1,foo,1.2,3,0)
|
|
(1 row)
|
|
|
|
select populate_record(null::testhstore1, hstore('c', '3.45') || hstore('a', '123'));
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select populate_record(null::testhstore1, hstore('c', '3.45') || hstore('e', '123'));
|
|
populate_record
|
|
-----------------
|
|
(,,3.45,,123)
|
|
(1 row)
|
|
|
|
select populate_record(null::testhstore0, '');
|
|
populate_record
|
|
-----------------
|
|
(,,,)
|
|
(1 row)
|
|
|
|
select populate_record(null::testhstore1, '');
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select v #= hstore('c', '3.45') from testhstore1 v;
|
|
?column?
|
|
------------------
|
|
(1,foo,3.45,3,0)
|
|
(1 row)
|
|
|
|
select v #= hstore('d', '3.45') from testhstore1 v;
|
|
?column?
|
|
--------------------
|
|
(1,foo,1.2,3.45,0)
|
|
(1 row)
|
|
|
|
select v #= hstore('e', '123') from testhstore1 v;
|
|
?column?
|
|
-------------------
|
|
(1,foo,1.2,3,123)
|
|
(1 row)
|
|
|
|
select v #= hstore('c', null) from testhstore1 v;
|
|
?column?
|
|
--------------
|
|
(1,foo,,3,0)
|
|
(1 row)
|
|
|
|
select v #= hstore('e', null) from testhstore0 v;
|
|
?column?
|
|
---------------
|
|
(1,foo,1.2,3)
|
|
(1 row)
|
|
|
|
select v #= hstore('e', null) from testhstore1 v;
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select v #= (hstore('b', 'foo') || hstore('a', '123')) from testhstore1 v;
|
|
?column?
|
|
-------------------
|
|
(123,foo,1.2,3,0)
|
|
(1 row)
|
|
|
|
select v #= (hstore('b', 'foo') || hstore('e', '123')) from testhstore1 v;
|
|
?column?
|
|
-------------------
|
|
(1,foo,1.2,3,123)
|
|
(1 row)
|
|
|
|
select v #= hstore '' from testhstore0 v;
|
|
?column?
|
|
---------------
|
|
(1,foo,1.2,3)
|
|
(1 row)
|
|
|
|
select v #= hstore '' from testhstore1 v;
|
|
?column?
|
|
-----------------
|
|
(1,foo,1.2,3,0)
|
|
(1 row)
|
|
|
|
select null::testhstore1 #= (hstore('c', '3.45') || hstore('a', '123'));
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select null::testhstore1 #= (hstore('c', '3.45') || hstore('e', '123'));
|
|
?column?
|
|
---------------
|
|
(,,3.45,,123)
|
|
(1 row)
|
|
|
|
select null::testhstore0 #= hstore '';
|
|
?column?
|
|
----------
|
|
(,,,)
|
|
(1 row)
|
|
|
|
select null::testhstore1 #= hstore '';
|
|
ERROR: domain hstestdom1 does not allow null values
|
|
select v #= h from testhstore1 v, (values (hstore 'a=>123',1),('b=>foo,c=>3.21',2),('a=>null',3),('e=>123',4),('f=>blah',5)) x(h,i) order by i;
|
|
?column?
|
|
-------------------
|
|
(123,foo,1.2,3,0)
|
|
(1,foo,3.21,3,0)
|
|
(,foo,1.2,3,0)
|
|
(1,foo,1.2,3,123)
|
|
(1,foo,1.2,3,0)
|
|
(5 rows)
|
|
|
|
-- keys/values
|
|
select akeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f');
|
|
akeys
|
|
--------------
|
|
{b,aa,cq,fg}
|
|
(1 row)
|
|
|
|
select akeys('""=>1');
|
|
akeys
|
|
-------
|
|
{""}
|
|
(1 row)
|
|
|
|
select akeys('');
|
|
akeys
|
|
-------
|
|
{}
|
|
(1 row)
|
|
|
|
select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f');
|
|
avals
|
|
-----------
|
|
{g,1,l,f}
|
|
(1 row)
|
|
|
|
select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL');
|
|
avals
|
|
--------------
|
|
{g,1,l,NULL}
|
|
(1 row)
|
|
|
|
select avals('""=>1');
|
|
avals
|
|
-------
|
|
{1}
|
|
(1 row)
|
|
|
|
select avals('');
|
|
avals
|
|
-------
|
|
{}
|
|
(1 row)
|
|
|
|
select hstore_to_array('aa=>1, cq=>l, b=>g, fg=>NULL'::hstore);
|
|
hstore_to_array
|
|
-------------------------
|
|
{b,g,aa,1,cq,l,fg,NULL}
|
|
(1 row)
|
|
|
|
select %% 'aa=>1, cq=>l, b=>g, fg=>NULL';
|
|
?column?
|
|
-------------------------
|
|
{b,g,aa,1,cq,l,fg,NULL}
|
|
(1 row)
|
|
|
|
select hstore_to_matrix('aa=>1, cq=>l, b=>g, fg=>NULL'::hstore);
|
|
hstore_to_matrix
|
|
---------------------------------
|
|
{{b,g},{aa,1},{cq,l},{fg,NULL}}
|
|
(1 row)
|
|
|
|
select %# 'aa=>1, cq=>l, b=>g, fg=>NULL';
|
|
?column?
|
|
---------------------------------
|
|
{{b,g},{aa,1},{cq,l},{fg,NULL}}
|
|
(1 row)
|
|
|
|
select * from skeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f');
|
|
skeys
|
|
-------
|
|
b
|
|
aa
|
|
cq
|
|
fg
|
|
(4 rows)
|
|
|
|
select * from skeys('""=>1');
|
|
skeys
|
|
-------
|
|
|
|
(1 row)
|
|
|
|
select * from skeys('');
|
|
skeys
|
|
-------
|
|
(0 rows)
|
|
|
|
select * from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f');
|
|
svals
|
|
-------
|
|
g
|
|
1
|
|
l
|
|
f
|
|
(4 rows)
|
|
|
|
select *, svals is null from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL');
|
|
svals | ?column?
|
|
-------+----------
|
|
g | f
|
|
1 | f
|
|
l | f
|
|
| t
|
|
(4 rows)
|
|
|
|
select * from svals('""=>1');
|
|
svals
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
select * from svals('');
|
|
svals
|
|
-------
|
|
(0 rows)
|
|
|
|
select * from each('aaa=>bq, b=>NULL, ""=>1 ');
|
|
key | value
|
|
-----+-------
|
|
| 1
|
|
b |
|
|
aaa | bq
|
|
(3 rows)
|
|
|
|
-- @>
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>b';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>b, c=>NULL';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>b, g=>NULL';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'g=>NULL';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>c';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>b';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
select 'a=>b, b=>1, c=>NULL'::hstore @> 'a=>b, c=>q';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
CREATE TABLE testhstore (h hstore);
|
|
\copy testhstore from 'data/hstore.data'
|
|
select count(*) from testhstore where h @> 'wait=>NULL';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC';
|
|
count
|
|
-------
|
|
15
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC, public=>t';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ? 'public';
|
|
count
|
|
-------
|
|
194
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?| ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
337
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?& ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
42
|
|
(1 row)
|
|
|
|
create index hidx on testhstore using gist(h);
|
|
set enable_seqscan=off;
|
|
select count(*) from testhstore where h @> 'wait=>NULL';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC';
|
|
count
|
|
-------
|
|
15
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC, public=>t';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ? 'public';
|
|
count
|
|
-------
|
|
194
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?| ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
337
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?& ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
42
|
|
(1 row)
|
|
|
|
drop index hidx;
|
|
create index hidx on testhstore using gin (h);
|
|
set enable_seqscan=off;
|
|
select count(*) from testhstore where h @> 'wait=>NULL';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC';
|
|
count
|
|
-------
|
|
15
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h @> 'wait=>CC, public=>t';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ? 'public';
|
|
count
|
|
-------
|
|
194
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?| ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
337
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h ?& ARRAY['public','disabled'];
|
|
count
|
|
-------
|
|
42
|
|
(1 row)
|
|
|
|
select count(*) from (select (each(h)).key from testhstore) as wow ;
|
|
count
|
|
-------
|
|
4781
|
|
(1 row)
|
|
|
|
select key, count(*) from (select (each(h)).key from testhstore) as wow group by key order by count desc, key;
|
|
key | count
|
|
-----------+-------
|
|
line | 884
|
|
query | 207
|
|
pos | 203
|
|
node | 202
|
|
space | 197
|
|
status | 195
|
|
public | 194
|
|
title | 190
|
|
wait | 190
|
|
org | 189
|
|
user | 189
|
|
coauthors | 188
|
|
disabled | 185
|
|
indexed | 184
|
|
cleaned | 180
|
|
bad | 179
|
|
date | 179
|
|
world | 176
|
|
state | 172
|
|
subtitle | 169
|
|
auth | 168
|
|
abstract | 161
|
|
(22 rows)
|
|
|
|
-- sort/hash
|
|
select count(distinct h) from testhstore;
|
|
count
|
|
-------
|
|
885
|
|
(1 row)
|
|
|
|
set enable_hashagg = false;
|
|
select count(*) from (select h from (select * from testhstore union all select * from testhstore) hs group by h) hs2;
|
|
count
|
|
-------
|
|
885
|
|
(1 row)
|
|
|
|
set enable_hashagg = true;
|
|
set enable_sort = false;
|
|
select count(*) from (select h from (select * from testhstore union all select * from testhstore) hs group by h) hs2;
|
|
count
|
|
-------
|
|
885
|
|
(1 row)
|
|
|
|
select distinct * from (values (hstore '' || ''),('')) v(h);
|
|
h
|
|
---
|
|
|
|
(1 row)
|
|
|
|
set enable_sort = true;
|
|
-- btree
|
|
drop index hidx;
|
|
create index hidx on testhstore using btree (h);
|
|
set enable_seqscan=off;
|
|
select count(*) from testhstore where h #># 'p=>1';
|
|
count
|
|
-------
|
|
125
|
|
(1 row)
|
|
|
|
select count(*) from testhstore where h = 'pos=>98, line=>371, node=>CBA, indexed=>t';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
-- json and jsonb
|
|
select hstore_to_json('"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4');
|
|
hstore_to_json
|
|
-------------------------------------------------------------------------------------------------
|
|
{"b": "t", "c": null, "d": "12345", "e": "012345", "f": "1.234", "g": "2.345e+4", "a key": "1"}
|
|
(1 row)
|
|
|
|
select cast( hstore '"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4' as json);
|
|
json
|
|
-------------------------------------------------------------------------------------------------
|
|
{"b": "t", "c": null, "d": "12345", "e": "012345", "f": "1.234", "g": "2.345e+4", "a key": "1"}
|
|
(1 row)
|
|
|
|
select hstore_to_json_loose('"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4');
|
|
hstore_to_json_loose
|
|
------------------------------------------------------------------------------------------
|
|
{"b": true, "c": null, "d": 12345, "e": "012345", "f": 1.234, "g": 2.345e+4, "a key": 1}
|
|
(1 row)
|
|
|
|
select hstore_to_jsonb('"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4');
|
|
hstore_to_jsonb
|
|
-------------------------------------------------------------------------------------------------
|
|
{"b": "t", "c": null, "d": "12345", "e": "012345", "f": "1.234", "g": "2.345e+4", "a key": "1"}
|
|
(1 row)
|
|
|
|
select cast( hstore '"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4' as jsonb);
|
|
jsonb
|
|
-------------------------------------------------------------------------------------------------
|
|
{"b": "t", "c": null, "d": "12345", "e": "012345", "f": "1.234", "g": "2.345e+4", "a key": "1"}
|
|
(1 row)
|
|
|
|
select hstore_to_jsonb_loose('"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4');
|
|
hstore_to_jsonb_loose
|
|
---------------------------------------------------------------------------------------
|
|
{"b": true, "c": null, "d": 12345, "e": "012345", "f": 1.234, "g": 23450, "a key": 1}
|
|
(1 row)
|
|
|
|
create table test_json_agg (f1 text, f2 hstore);
|
|
insert into test_json_agg values ('rec1','"a key" =>1, b => t, c => null, d=> 12345, e => 012345, f=> 1.234, g=> 2.345e+4'),
|
|
('rec2','"a key" =>2, b => f, c => "null", d=> -12345, e => 012345.6, f=> -1.234, g=> 0.345e-4');
|
|
select json_agg(q) from test_json_agg q;
|
|
json_agg
|
|
----------------------------------------------------------------------------------------------------------------------------
|
|
[{"f1":"rec1","f2":{"b": "t", "c": null, "d": "12345", "e": "012345", "f": "1.234", "g": "2.345e+4", "a key": "1"}}, +
|
|
{"f1":"rec2","f2":{"b": "f", "c": "null", "d": "-12345", "e": "012345.6", "f": "-1.234", "g": "0.345e-4", "a key": "2"}}]
|
|
(1 row)
|
|
|
|
select json_agg(q) from (select f1, hstore_to_json_loose(f2) as f2 from test_json_agg) q;
|
|
json_agg
|
|
----------------------------------------------------------------------------------------------------------------------
|
|
[{"f1":"rec1","f2":{"b": true, "c": null, "d": 12345, "e": "012345", "f": 1.234, "g": 2.345e+4, "a key": 1}}, +
|
|
{"f1":"rec2","f2":{"b": false, "c": "null", "d": -12345, "e": "012345.6", "f": -1.234, "g": 0.345e-4, "a key": 2}}]
|
|
(1 row)
|
|
|