Commit Graph

19 Commits

Author SHA1 Message Date
drh 923782530b SQLite now always chooses the column names for compound selects using
the left-most select.  This makes SQLite work like other SQL database,
but it also is a change from historical behavior and may break some
scripts.  Ticket #1721. (CVS 3153)

FossilOrigin-Name: 80cda9f7ce83f2de6cd2fdaf6150bbc35b670fee
2006-03-26 01:21:22 +00:00
drh 3f219f46fc A SUM() of all NULLs returns NULL. A SUM() of nothing return 0.
A SUM() of a mixture of NULLs and numbers returns the sum of the
numbers.  Ticket #1413. (CVS 2677)

FossilOrigin-Name: 2e6230edfd651b40481ebad8aa01a22ac92ce80c
2005-09-08 19:45:57 +00:00
drh 3d1d95e625 The SUM() aggregate function returns an integer result if all inputs are
integers.  Any single non-integer input causes the result to be a floating
point value. (CVS 2669)

FossilOrigin-Name: 21adf4bd99e732650a1e8e9a1cc954126983a654
2005-09-08 10:37:01 +00:00
danielk1977 e61b9f4f3c Modify test scripts to work when SQLITE_OMIT_SUBQUERY (but no other OMIT macros) is defined. (CVS 2252)
FossilOrigin-Name: d4e19efcef68d834c55c7d496cdb3696d63a31a2
2005-01-21 04:25:47 +00:00
danielk1977 3e8c37e7f8 Modify test scripts to work when SQLITE_OMIT_SUBQUERY (along with other OMIT macros) is defined. (CVS 2251)
FossilOrigin-Name: bb0254ab14417f0ab40f10f37cb63a60507f070a
2005-01-21 03:12:14 +00:00
danielk1977 27c774388a Ensure tests pass when SQLITE_OMIT_COMPOUND_SELECT is defined. (CVS 2138)
FossilOrigin-Name: 007be591b7829f9ff38e4b14ba5a5043796c2ff3
2004-11-22 13:35:41 +00:00
drh 92febd92ad Tcl interface transfers values directly between SQLite and Tcl_Objs, without
at translation to strings. (CVS 1898)

FossilOrigin-Name: e97c331362545ce21117776c7b61d3488668f2bf
2004-08-20 18:34:20 +00:00
drh 1af3fdb4dc An improved fix for the min() problem of ticket #800. (CVS 1804)
FossilOrigin-Name: b6e8b7a13cd9f90e2f7d963d9ddbe591571f3a27
2004-07-18 21:33:01 +00:00
drh 9eb516c0eb min() ignores NULL values. Ticket #800. (CVS 1802)
FossilOrigin-Name: 166234a2b61e1d6a501e48dde1caec0a02bec90b
2004-07-18 20:52:32 +00:00
danielk1977 3aeab9e438 Apply (1679) to version 3. Ticket #777. (CVS 1680)
FossilOrigin-Name: 0a26b9158095f0995fce2f0ccdfb383ab26c76a5
2004-06-24 00:20:04 +00:00
drh 6e17529e97 Fix the min/max optimizer so that it works when the FROM clause is a
subquery.  Ticket #658. (CVS 1293)

FossilOrigin-Name: 31c94acc72d318b5dec0fef1485621943add45c8
2004-03-13 14:00:36 +00:00
drh 268380ca9e Min() and max() functions honor the distinction between TEXT and NUMERIC
data.  Ticket #623.  typeof() is now a user function.  Some tests are
now failing due to ticket #521. (CVS 1272)

FossilOrigin-Name: adbe31adf1ad0ca723203ca3d7dc480324c60d43
2004-02-25 13:47:31 +00:00
drh 0c37e6309b Make sure min() and max() optimizations work for subqueries. Ticket #587. (CVS 1201)
FossilOrigin-Name: af73fbca839f8cbe39c21f1f9e439fe9b79005c8
2004-01-30 02:01:03 +00:00
drh e5f50722b4 Make sure the min() and max() optimizer works correctly when there
is a LIMIT clause.  Ticket #396. (CVS 1057)

FossilOrigin-Name: c35e50717678703763c696e3e9b265add2ca6454
2003-07-19 00:44:14 +00:00
drh d4d595f94c Make sure the min() and max() optimizations work on empty indexed tables.
Ticket #296. (CVS 914)

FossilOrigin-Name: 98ef6110068e5ed3cd77a14b004f890b79b731f7
2003-04-17 12:44:23 +00:00
drh f570f011eb Refinements to NULL processing: NULLs are indistinct for DISTINCT and UNION.
Multiplying a NULL by zero yields zero. In a CASE expression, a NULL comparison
is considered false, not NULL.  With these changes, NULLs in SQLite now work
the same as in PostgreSQL and in Oracle. (CVS 600)

FossilOrigin-Name: da61aa1d238539dff9c43fd9f464d311e28d669f
2002-05-31 15:51:25 +00:00
drh 739105c72c Built-in aggregate functions (MIN, SUM, AVG, etc) should ignore NULL entires. (CVS 597)
FossilOrigin-Name: 19ae12bef210ae5fe171f10833faa38d640c129f
2002-05-29 23:22:23 +00:00
drh bb113518f9 Bug fixes and additional test cases for the distinct-NULL patch. (CVS 592)
FossilOrigin-Name: 0e268d0c0faa02c3f95e1567cf631b7a04bfbdf0
2002-05-27 01:04:51 +00:00
drh 5cf8e8c7fa New ROWIDs are numbered sequentially. (CVS 383)
FossilOrigin-Name: 1686196a8aea326f616bc8205df99cd84d955ec4
2002-02-19 22:42:05 +00:00