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of the STRING type category, thereby opening up the mechanism for user-defined types. This is mainly for the benefit of citext, though; there aren't likely to be a lot of types that are all general-purpose character strings. Per discussion with David Wheeler.
1157 lines
18 KiB
Plaintext
1157 lines
18 KiB
Plaintext
--
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-- Test citext datatype
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--
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--
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-- first, define the datatype. Turn off echoing so that expected file
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-- does not depend on contents of citext.sql.
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--
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SET client_min_messages = warning;
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\set ECHO none
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-- Test the operators and indexing functions
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-- Test = and <>.
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SELECT 'a'::citext = 'a'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'a'::citext = 'A'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'a'::citext = 'A'::text AS f; -- text wins the discussion
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f
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---
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f
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(1 row)
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SELECT 'a'::citext = 'b'::citext AS f;
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f
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---
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f
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(1 row)
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SELECT 'a'::citext = 'ab'::citext AS f;
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f
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---
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f
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(1 row)
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SELECT 'a'::citext <> 'ab'::citext AS t;
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t
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---
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t
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(1 row)
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-- Multibyte sanity tests. Uncomment to run.
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-- SELECT 'À'::citext = 'À'::citext AS t;
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-- SELECT 'À'::citext = 'à'::citext AS t;
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-- SELECT 'À'::text = 'à'::text AS f; -- text wins.
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-- SELECT 'À'::citext <> 'B'::citext AS t;
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-- Test combining characters making up canonically equivalent strings.
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-- SELECT 'Ä'::text <> 'Ä'::text AS t;
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-- SELECT 'Ä'::citext <> 'Ä'::citext AS t;
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-- Test the Turkish dotted I. The lowercase is a single byte while the
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-- uppercase is multibyte. This is why the comparison code can't be optimized
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-- to compare string lengths.
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-- SELECT 'i'::citext = 'İ'::citext AS t;
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-- Regression.
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-- SELECT 'láska'::citext <> 'laská'::citext AS t;
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-- SELECT 'Ask Bjørn Hansen'::citext = 'Ask Bjørn Hansen'::citext AS t;
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-- SELECT 'Ask Bjørn Hansen'::citext = 'ASK BJØRN HANSEN'::citext AS t;
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-- SELECT 'Ask Bjørn Hansen'::citext <> 'Ask Bjorn Hansen'::citext AS t;
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-- SELECT 'Ask Bjørn Hansen'::citext <> 'ASK BJORN HANSEN'::citext AS t;
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-- SELECT citext_cmp('Ask Bjørn Hansen'::citext, 'Ask Bjørn Hansen'::citext) AS zero;
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-- SELECT citext_cmp('Ask Bjørn Hansen'::citext, 'ask bjørn hansen'::citext) AS zero;
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-- SELECT citext_cmp('Ask Bjørn Hansen'::citext, 'ASK BJØRN HANSEN'::citext) AS zero;
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-- SELECT citext_cmp('Ask Bjørn Hansen'::citext, 'Ask Bjorn Hansen'::citext) AS positive;
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-- SELECT citext_cmp('Ask Bjorn Hansen'::citext, 'Ask Bjørn Hansen'::citext) AS negative;
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-- Test > and >=
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SELECT 'B'::citext > 'a'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'b'::citext > 'A'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'B'::citext > 'b'::citext AS f;
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f
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---
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f
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(1 row)
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SELECT 'B'::citext >= 'b'::citext AS t;
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t
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---
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t
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(1 row)
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-- Test < and <=
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SELECT 'a'::citext < 'B'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'a'::citext <= 'B'::citext AS t;
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t
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---
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t
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(1 row)
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-- Test implicit casting. citext casts to text, but not vice-versa.
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SELECT 'a'::citext = 'a'::text AS t;
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t
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---
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t
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(1 row)
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SELECT 'A'::text <> 'a'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'B'::citext < 'a'::text AS t; -- text wins.
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t
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---
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t
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(1 row)
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SELECT 'B'::citext <= 'a'::text AS t; -- text wins.
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t
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---
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t
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(1 row)
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SELECT 'a'::citext > 'B'::text AS t; -- text wins.
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t
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---
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t
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(1 row)
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SELECT 'a'::citext >= 'B'::text AS t; -- text wins.
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t
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---
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t
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(1 row)
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-- Test implicit casting. citext casts to varchar, but not vice-versa.
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SELECT 'a'::citext = 'a'::varchar AS t;
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t
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---
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t
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(1 row)
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SELECT 'A'::varchar <> 'a'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'B'::citext < 'a'::varchar AS t; -- varchar wins.
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t
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---
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t
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(1 row)
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SELECT 'B'::citext <= 'a'::varchar AS t; -- varchar wins.
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t
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---
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t
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(1 row)
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SELECT 'a'::citext > 'B'::varchar AS t; -- varchar wins.
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t
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---
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t
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(1 row)
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SELECT 'a'::citext >= 'B'::varchar AS t; -- varchar wins.
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t
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---
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t
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(1 row)
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-- A couple of longer examlpes to ensure that we don't get any issues with bad
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-- conversions to char[] in the c code. Yes, I did do this.
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SELECT 'aardvark'::citext = 'aardvark'::citext AS t;
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t
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---
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t
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(1 row)
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SELECT 'aardvark'::citext = 'aardVark'::citext AS t;
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t
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---
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t
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(1 row)
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-- Check the citext_cmp() function explicitly.
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SELECT citext_cmp('aardvark'::citext, 'aardvark'::citext) AS zero;
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zero
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------
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0
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(1 row)
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SELECT citext_cmp('aardvark'::citext, 'aardVark'::citext) AS zero;
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zero
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------
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0
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(1 row)
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SELECT citext_cmp('AARDVARK'::citext, 'AARDVARK'::citext) AS zero;
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zero
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------
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0
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(1 row)
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SELECT citext_cmp('B'::citext, 'a'::citext) AS one;
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one
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-----
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1
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(1 row)
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-- Do some tests using a table and index.
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CREATE TEMP TABLE try (
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name citext PRIMARY KEY
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);
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "try_pkey" for table "try"
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INSERT INTO try (name)
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VALUES ('a'), ('ab'), ('â'), ('aba'), ('b'), ('ba'), ('bab'), ('AZ');
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SELECT name, 'a' = name AS eq_a FROM try WHERE name <> 'â';
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name | eq_a
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------+------
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a | t
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ab | f
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aba | f
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b | f
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ba | f
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bab | f
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AZ | f
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(7 rows)
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SELECT name, 'a' = name AS t FROM try where name = 'a';
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name | t
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------+---
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a | t
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(1 row)
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SELECT name, 'A' = name AS "eq_A" FROM try WHERE name <> 'â';
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name | eq_A
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------+------
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a | t
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ab | f
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aba | f
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b | f
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ba | f
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bab | f
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AZ | f
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(7 rows)
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SELECT name, 'A' = name AS t FROM try where name = 'A';
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name | t
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------+---
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a | t
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(1 row)
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SELECT name, 'A' = name AS t FROM try where name = 'A';
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name | t
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------+---
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a | t
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(1 row)
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-- expected failures on duplicate key
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INSERT INTO try (name) VALUES ('a');
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ERROR: duplicate key value violates unique constraint "try_pkey"
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INSERT INTO try (name) VALUES ('A');
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ERROR: duplicate key value violates unique constraint "try_pkey"
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INSERT INTO try (name) VALUES ('aB');
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ERROR: duplicate key value violates unique constraint "try_pkey"
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-- Make sure that citext_smaller() and citext_lager() work properly.
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SELECT citext_smaller( 'aa'::citext, 'ab'::citext ) = 'aa' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_smaller( 'AAAA'::citext, 'bbbb'::citext ) = 'AAAA' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_smaller( 'aardvark'::citext, 'Aaba'::citext ) = 'Aaba' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_smaller( 'aardvark'::citext, 'AARDVARK'::citext ) = 'AARDVARK' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_larger( 'aa'::citext, 'ab'::citext ) = 'ab' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_larger( 'AAAA'::citext, 'bbbb'::citext ) = 'bbbb' AS t;
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t
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---
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t
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(1 row)
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SELECT citext_larger( 'aardvark'::citext, 'Aaba'::citext ) = 'aardvark' AS t;
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t
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---
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t
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(1 row)
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-- Test aggregate functions and sort ordering
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CREATE TEMP TABLE srt (
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name CITEXT
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);
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INSERT INTO srt (name)
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VALUES ('aardvark'),
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('AAA'),
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('aba'),
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('ABC'),
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('abd');
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-- Check the min() and max() aggregates, with and without index.
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set enable_seqscan = off;
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SELECT MIN(name) AS "AAA" FROM srt;
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AAA
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-----
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AAA
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(1 row)
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SELECT MAX(name) AS abd FROM srt;
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abd
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-----
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abd
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(1 row)
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reset enable_seqscan;
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set enable_indexscan = off;
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SELECT MIN(name) AS "AAA" FROM srt;
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AAA
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-----
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AAA
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(1 row)
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SELECT MAX(name) AS abd FROM srt;
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abd
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-----
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abd
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(1 row)
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reset enable_indexscan;
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-- Check sorting likewise
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set enable_seqscan = off;
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SELECT name FROM srt ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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reset enable_seqscan;
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set enable_indexscan = off;
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SELECT name FROM srt ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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reset enable_indexscan;
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-- Test assignment casts.
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SELECT LOWER(name) as aaa FROM srt WHERE name = 'AAA'::text;
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aaa
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-----
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aaa
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(1 row)
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SELECT LOWER(name) as aaa FROM srt WHERE name = 'AAA'::varchar;
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aaa
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-----
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aaa
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(1 row)
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SELECT LOWER(name) as aaa FROM srt WHERE name = 'AAA'::bpchar;
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aaa
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-----
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aaa
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(1 row)
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SELECT LOWER(name) as aaa FROM srt WHERE name = 'AAA';
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aaa
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-----
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aaa
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(1 row)
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SELECT LOWER(name) as aaa FROM srt WHERE name = 'AAA'::citext;
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aaa
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-----
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aaa
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(1 row)
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-- LIKE shoudl be case-insensitive
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SELECT name FROM srt WHERE name LIKE '%a%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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SELECT name FROM srt WHERE name NOT LIKE '%b%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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(2 rows)
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SELECT name FROM srt WHERE name LIKE '%A%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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SELECT name FROM srt WHERE name NOT LIKE '%B%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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(2 rows)
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-- ~~ should be case-insensitive
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SELECT name FROM srt WHERE name ~~ '%a%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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SELECT name FROM srt WHERE name !~~ '%b%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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(2 rows)
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SELECT name FROM srt WHERE name ~~ '%A%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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aba
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ABC
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abd
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(5 rows)
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SELECT name FROM srt WHERE name !~~ '%B%' ORDER BY name;
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name
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----------
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AAA
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aardvark
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(2 rows)
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-- ~ should be case-insensitive
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SELECT name FROM srt WHERE name ~ '^a' ORDER BY name;
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name
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----------
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AAA
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aardvark
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|
aba
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|
ABC
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abd
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(5 rows)
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SELECT name FROM srt WHERE name !~ 'a$' ORDER BY name;
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name
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----------
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aardvark
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ABC
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abd
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(3 rows)
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SELECT name FROM srt WHERE name ~ '^A' ORDER BY name;
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name
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----------
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AAA
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|
aardvark
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|
aba
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|
ABC
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abd
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|
(5 rows)
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SELECT name FROM srt WHERE name !~ 'A$' ORDER BY name;
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name
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----------
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aardvark
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ABC
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abd
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(3 rows)
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-- SIMILAR TO should be case-insensitive.
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SELECT name FROM srt WHERE name SIMILAR TO '%a.*';
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name
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------
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AAA
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aba
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(2 rows)
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SELECT name FROM srt WHERE name SIMILAR TO '%A.*';
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name
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------
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AAA
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aba
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(2 rows)
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-- Table 9-5. SQL String Functions and Operators
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SELECT 'D'::citext || 'avid'::citext = 'David'::citext AS citext_concat;
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citext_concat
|
|
---------------
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t
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(1 row)
|
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SELECT 'Value: '::citext || 42 = 'Value: 42' AS text_concat;
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text_concat
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-------------
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t
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(1 row)
|
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SELECT 42 || ': value'::citext ='42: value' AS int_concat;
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int_concat
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------------
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t
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(1 row)
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SELECT bit_length('jose'::citext) = 32 AS t;
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t
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---
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t
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(1 row)
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SELECT bit_length( name ) = bit_length( name::text ) AS t FROM srt;
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t
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---
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t
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|
t
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|
t
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|
t
|
|
t
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|
(5 rows)
|
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|
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SELECT textlen( name ) = textlen( name::text ) AS t FROM srt;
|
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t
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|
---
|
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t
|
|
t
|
|
t
|
|
t
|
|
t
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|
(5 rows)
|
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SELECT char_length( name ) = char_length( name::text ) AS t FROM srt;
|
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t
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---
|
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t
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|
t
|
|
t
|
|
t
|
|
t
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|
(5 rows)
|
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|
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SELECT lower( name ) = lower( name::text ) AS t FROM srt;
|
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t
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|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
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|
(5 rows)
|
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|
|
SELECT octet_length( name ) = octet_length( name::text ) AS t FROM srt;
|
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t
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|
---
|
|
t
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|
t
|
|
t
|
|
t
|
|
t
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|
(5 rows)
|
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|
|
SELECT overlay( name placing 'hom' from 2 for 4) = overlay( name::text placing 'hom' from 2 for 4) AS t FROM srt;
|
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t
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---
|
|
t
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|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT position( 'a' IN name ) = position( 'a' IN name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT substr('alphabet'::citext, 3) = 'phabet' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substr('alphabet'::citext, 3, 2) = 'ph' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('alphabet'::citext, 3) = 'phabet' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('alphabet'::citext, 3, 2) = 'ph' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('Thomas'::citext from 2 for 3) = 'hom' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('Thomas'::citext from 2) = 'homas' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('Thomas'::citext from '...$') = 'mas' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT substring('Thomas'::citext from '%#"o_a#"_' for '#') = 'oma' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT trim(' trim '::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT trim('xxxxxtrimxxxx'::citext, 'x'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT trim('xxxxxxtrimxxxx'::text, 'x'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT trim('xxxxxtrimxxxx'::text, 'x'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT upper( name ) = upper( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
-- Table 9-6. Other String Functions.
|
|
SELECT ascii( name ) = ascii( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT btrim(' trim'::citext ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT btrim('xxxxxtrimxxxx'::citext, 'x'::citext ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT btrim('xyxtrimyyx'::citext, 'xy'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT btrim('xyxtrimyyx'::text, 'xy'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT btrim('xyxtrimyyx'::citext, 'xy'::text ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
-- chr() takes an int and returns text.
|
|
-- convert() and convert_from take bytea and return text.
|
|
SELECT convert_to( name, 'ISO-8859-1' ) = convert_to( name::text, 'ISO-8859-1' ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT decode('MTIzAAE='::citext, 'base64') = decode('MTIzAAE='::text, 'base64') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
-- encode() takes bytea and returns text.
|
|
SELECT initcap('hi THOMAS'::citext) = initcap('hi THOMAS'::text) AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT length( name ) = length( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT lpad('hi'::citext, 5 ) = ' hi' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT lpad('hi'::citext, 5, 'xy'::citext) = 'xyxhi' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT lpad('hi'::text, 5, 'xy'::citext) = 'xyxhi' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT lpad('hi'::citext, 5, 'xy'::text ) = 'xyxhi' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT ltrim(' trim'::citext ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT ltrim('zzzytrim'::citext, 'xyz'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT ltrim('zzzytrim'::text, 'xyz'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT ltrim('zzzytrim'::citext, 'xyz'::text ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT md5( name ) = md5( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
-- pg_client_encoding() takes no args and returns name.
|
|
SELECT quote_ident( name ) = quote_ident( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT quote_literal( name ) = quote_literal( name::text ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT regexp_matches('foobarbequebaz'::citext, '(bar)(beque)') = ARRAY[ 'bar', 'beque' ] AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT regexp_replace('Thomas'::citext, '.[mN]a.', 'M') = 'ThM' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT regexp_split_to_array('hello world'::citext, E'\\s+') = ARRAY[ 'hello', 'world' ] AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT regexp_split_to_table('hello world'::citext, E'\\s+') AS words;
|
|
words
|
|
-------
|
|
hello
|
|
world
|
|
(2 rows)
|
|
|
|
SELECT repeat('Pg'::citext, 4) = 'PgPgPgPg' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT replace('abcdefabcdef'::citext, 'cd', 'XX') = 'abXXefabXXef' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rpad('hi'::citext, 5 ) = 'hi ' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rpad('hi'::citext, 5, 'xy'::citext) = 'hixyx' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rpad('hi'::text, 5, 'xy'::citext) = 'hixyx' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rpad('hi'::citext, 5, 'xy'::text ) = 'hixyx' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rtrim('trim '::citext ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rtrim('trimxxxx'::citext, 'x'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rtrim('trimxxxx'::text, 'x'::citext) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT rtrim('trimxxxx'::text, 'x'::text ) = 'trim' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT split_part('abc~@~def~@~ghi'::citext, '~@~', 2) = 'def' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT strpos('high'::citext, 'ig' ) = 2 AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT strpos('high'::citext, 'ig'::citext) = 2 AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
-- to_ascii() does not support UTF-8.
|
|
-- to_hex() takes a numeric argument.
|
|
SELECT substr('alphabet', 3, 2) = 'ph' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT translate('abcdefabcdef'::citext, 'cd', 'XX') = 'abXXefabXXef' AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
-- TODO These functions should work case-insensitively, but don't.
|
|
SELECT regexp_matches('foobarbequebaz'::citext, '(BAR)(BEQUE)') = ARRAY[ 'bar', 'beque' ] AS "t TODO";
|
|
t TODO
|
|
--------
|
|
(0 rows)
|
|
|
|
SELECT regexp_replace('Thomas'::citext, '.[MN]A.', 'M') = 'THM' AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT regexp_split_to_array('helloTworld'::citext, 't') = ARRAY[ 'hello', 'world' ] AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT regexp_split_to_table('helloTworld'::citext, 't') AS "words TODO";
|
|
words TODO
|
|
-------------
|
|
helloTworld
|
|
(1 row)
|
|
|
|
SELECT replace('abcdefabcdef'::citext, 'CD', 'XX') = 'abXXefabXXef' AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT split_part('abcTdefTghi'::citext, 't', 2) = 'def' AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT strpos('high'::citext, 'IG'::citext) = 2 AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT translate('abcdefabcdef'::citext, 'CD', 'XX') = 'abXXefabXXef' AS "t TODO";
|
|
t TODO
|
|
--------
|
|
f
|
|
(1 row)
|
|
|
|
-- Table 9-20. Formatting Functions
|
|
SELECT to_date('05 Dec 2000'::citext, 'DD Mon YYYY'::citext)
|
|
= to_date('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_date('05 Dec 2000'::citext, 'DD Mon YYYY')
|
|
= to_date('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_date('05 Dec 2000', 'DD Mon YYYY'::citext)
|
|
= to_date('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_number('12,454.8-'::citext, '99G999D9S'::citext)
|
|
= to_number('12,454.8-', '99G999D9S') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_number('12,454.8-'::citext, '99G999D9S')
|
|
= to_number('12,454.8-', '99G999D9S') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_number('12,454.8-', '99G999D9S'::citext)
|
|
= to_number('12,454.8-', '99G999D9S') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_timestamp('05 Dec 2000'::citext, 'DD Mon YYYY'::citext)
|
|
= to_timestamp('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_timestamp('05 Dec 2000'::citext, 'DD Mon YYYY')
|
|
= to_timestamp('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT to_timestamp('05 Dec 2000', 'DD Mon YYYY'::citext)
|
|
= to_timestamp('05 Dec 2000', 'DD Mon YYYY') AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
-- Try assigning function results to a column.
|
|
SELECT COUNT(*) = 8::bigint AS t FROM try;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
INSERT INTO try
|
|
VALUES ( to_char( now()::timestamp, 'HH12:MI:SS') ),
|
|
( to_char( now() + '1 sec'::interval, 'HH12:MI:SS') ), -- timetamptz
|
|
( to_char( '15h 2m 12s'::interval, 'HH24:MI:SS') ),
|
|
( to_char( current_date, '999') ),
|
|
( to_char( 125::int, '999') ),
|
|
( to_char( 127::int4, '999') ),
|
|
( to_char( 126::int8, '999') ),
|
|
( to_char( 128.8::real, '999D9') ),
|
|
( to_char( 125.7::float4, '999D9') ),
|
|
( to_char( 125.9::float8, '999D9') ),
|
|
( to_char( -125.8::numeric, '999D99S') );
|
|
SELECT COUNT(*) = 19::bigint AS t FROM try;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT like_escape( name, '' ) = like_escape( name::text, '' ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
SELECT like_escape( name::text, ''::citext ) =like_escape( name::text, '' ) AS t FROM srt;
|
|
t
|
|
---
|
|
t
|
|
t
|
|
t
|
|
t
|
|
t
|
|
(5 rows)
|
|
|
|
--- citext should work as source or destination of I/O conversion casts
|
|
SELECT cidr( '192.168.1.2'::citext ) = cidr( '192.168.1.2'::text ) AS "t";
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '192.168.1.2'::cidr::citext = '192.168.1.2'::cidr::text AS "t";
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|