4 Commits

Author	SHA1	Message	Date
Tom Lane	9bbca2c0f0	Add some more union/intersect/except test cases, per suggestions ... from Kevin O'Gorman.	2000-11-09 02:47:49 +00:00
Tom Lane	05e3d0ee86	Reimplementation of UNION/INTERSECT/EXCEPT. INTERSECT/EXCEPT now meet the ... SQL92 semantics, including support for ALL option. All three can be used in subqueries and views. DISTINCT and ORDER BY work now in views, too. This rewrite fixes many problems with cross-datatype UNIONs and INSERT/SELECT where the SELECT yields different datatypes than the INSERT needs. I did that by making UNION subqueries and SELECT in INSERT be treated like subselects-in-FROM, thereby allowing an extra level of targetlist where the datatype conversions can be inserted safely. INITDB NEEDED!	2000-10-05 19:11:39 +00:00
Thomas G. Lockhart	d1e6368816	Clean up header for uniform appearance throughout tests.	2000-01-06 06:41:55 +00:00
Thomas G. Lockhart	5812d51270	Add test for UNION. ... Add additional tests in strings for conversions of the "name" data type. Test SQL92 string functions such as SUBSTRING() and POSITION().	1998-05-29 13:23:02 +00:00