59 lines
1.4 KiB
SQL
59 lines
1.4 KiB
SQL
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---
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--- Postgres DateStyle needs all tests which parsing 'now'::datetime string
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---
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SET DATESTYLE TO 'Postgres';
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SELECT 'now'::datetime =
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TO_CHAR('now'::datetime, 'Dy Mon DD HH24:MI:SS YYYY')::datetime
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as "Now vs. to_char";
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SELECT 'now'::datetime =
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FROM_CHAR('now'::datetime, 'Dy Mon DD HH24:MI:SS YYYY')
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as "Now vs. from_char";
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SELECT FROM_CHAR('now'::datetime, 'Dy Mon DD HH24:MI:SS YYYY') =
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TO_CHAR('now'::datetime, 'Dy Mon DD HH24:MI:SS YYYY')::datetime
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as "From_char vs. To_char";
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SELECT 'now'::datetime =
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FROM_CHAR(
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TO_CHAR('now'::datetime, '"Time: "HH24-MI-SS" Date: "Dy DD Mon YYYY'),
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'"Time: "HH24-MI-SS" Date: "Dy DD Mon YYYY'
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)
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as "High from/to char test";
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SELECT TO_CHAR('now'::datetime, 'SSSS')::int =
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TO_CHAR('now'::datetime, 'HH24')::int * 3600 +
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TO_CHAR('now'::datetime, 'MI')::int * 60 +
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TO_CHAR('now'::datetime, 'SS')::int
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as "SSSS test";
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SELECT TO_CHAR('now'::datetime, 'WW')::int =
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(TO_CHAR('now'::datetime, 'DDD')::int -
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TO_CHAR('now'::datetime, 'D')::int + 7) / 7
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as "Week test";
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SELECT TO_CHAR('now'::datetime, 'Q')::int =
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TO_CHAR('now'::datetime, 'MM')::int / 3 + 1
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as "Quartal test";
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SELECT TO_CHAR('now'::datetime, 'DDD')::int =
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(TO_CHAR('now'::datetime, 'WW')::int * 7) -
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(7 - TO_CHAR('now'::datetime, 'D')::int) +
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(7 - TO_CHAR(('01-Jan-'||
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TO_CHAR('now'::datetime,'YYYY'))::datetime,'D')::int)
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+1
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as "Week and day test";
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