2017-03-12 00:36:50 +01:00
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--
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2019-07-06 05:56:34 +02:00
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-- expression evaluation tests that don't fit into a more specific file
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2017-03-12 00:36:50 +01:00
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--
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--
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-- Tests for SQLVAlueFunction
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--
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-- current_date (always matches because of transactional behaviour)
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SELECT date(now())::text = current_date::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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-- current_time / localtime
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SELECT now()::timetz::text = current_time::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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2019-07-06 05:56:34 +02:00
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SELECT now()::timetz(4)::text = current_time(4)::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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2017-03-12 00:36:50 +01:00
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SELECT now()::time::text = localtime::text;
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?column?
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t
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(1 row)
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2019-07-06 05:56:34 +02:00
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SELECT now()::time(3)::text = localtime(3)::text;
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?column?
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t
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(1 row)
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2017-03-12 00:36:50 +01:00
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-- current_timestamp / localtimestamp (always matches because of transactional behaviour)
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SELECT current_timestamp = NOW();
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?column?
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t
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(1 row)
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-- precision
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SELECT length(current_timestamp::text) >= length(current_timestamp(0)::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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-- localtimestamp
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SELECT now()::timestamp::text = localtimestamp::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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-- current_role/user/user is tested in rolnames.sql
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-- current database / catalog
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SELECT current_catalog = current_database();
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?column?
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t
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(1 row)
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-- current_schema
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SELECT current_schema;
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current_schema
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----------------
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public
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(1 row)
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SET search_path = 'notme';
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SELECT current_schema;
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current_schema
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----------------
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(1 row)
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SET search_path = 'pg_catalog';
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SELECT current_schema;
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current_schema
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----------------
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pg_catalog
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(1 row)
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RESET search_path;
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2019-07-06 05:56:34 +02:00
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--
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-- Tests for BETWEEN
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--
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explain (costs off)
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select count(*) from date_tbl
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where f1 between '1997-01-01' and '1998-01-01';
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QUERY PLAN
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-----------------------------------------------------------------------------
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Aggregate
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-> Seq Scan on date_tbl
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Filter: ((f1 >= '01-01-1997'::date) AND (f1 <= '01-01-1998'::date))
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(3 rows)
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select count(*) from date_tbl
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where f1 between '1997-01-01' and '1998-01-01';
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count
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-------
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3
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(1 row)
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explain (costs off)
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select count(*) from date_tbl
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where f1 not between '1997-01-01' and '1998-01-01';
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QUERY PLAN
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--------------------------------------------------------------------------
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Aggregate
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-> Seq Scan on date_tbl
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Filter: ((f1 < '01-01-1997'::date) OR (f1 > '01-01-1998'::date))
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(3 rows)
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select count(*) from date_tbl
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where f1 not between '1997-01-01' and '1998-01-01';
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count
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-------
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12
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(1 row)
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explain (costs off)
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select count(*) from date_tbl
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where f1 between symmetric '1997-01-01' and '1998-01-01';
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QUERY PLAN
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----------------------------------------------------------------------------------------------------------------------------------------------
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Aggregate
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-> Seq Scan on date_tbl
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Filter: (((f1 >= '01-01-1997'::date) AND (f1 <= '01-01-1998'::date)) OR ((f1 >= '01-01-1998'::date) AND (f1 <= '01-01-1997'::date)))
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(3 rows)
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select count(*) from date_tbl
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where f1 between symmetric '1997-01-01' and '1998-01-01';
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count
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-------
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3
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(1 row)
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explain (costs off)
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select count(*) from date_tbl
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where f1 not between symmetric '1997-01-01' and '1998-01-01';
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QUERY PLAN
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-----------------------------------------------------------------------------------------------------------------------------------------
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Aggregate
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-> Seq Scan on date_tbl
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Filter: (((f1 < '01-01-1997'::date) OR (f1 > '01-01-1998'::date)) AND ((f1 < '01-01-1998'::date) OR (f1 > '01-01-1997'::date)))
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(3 rows)
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select count(*) from date_tbl
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where f1 not between symmetric '1997-01-01' and '1998-01-01';
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count
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-------
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12
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(1 row)
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