20 lines
584 B
SQL
20 lines
584 B
SQL
--
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-- SELECT_DISTINCT_ON
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--
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SELECT DISTINCT ON (string4) string4, two, ten
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FROM tmp
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ORDER BY string4 using <, two using >, ten using <;
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-- this will fail due to conflict of ordering requirements
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SELECT DISTINCT ON (string4, ten) string4, two, ten
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FROM tmp
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ORDER BY string4 using <, two using <, ten using <;
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SELECT DISTINCT ON (string4, ten) string4, ten, two
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FROM tmp
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ORDER BY string4 using <, ten using >, two using <;
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-- bug #5049: early 8.4.x chokes on volatile DISTINCT ON clauses
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select distinct on (1) floor(random()) as r, f1 from int4_tbl order by 1,2;
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