Commit Graph

9 Commits

Author SHA1 Message Date
drh dda70fe38e Remove leftover "breakpoint" commands from test scripts. Also remove blank
lines at the end of scripts. (CVS 6721)

FossilOrigin-Name: 1fef16ec2b89981770cf44f606a420fbe031a7a4
2009-06-05 17:09:11 +00:00
danielk1977 1d46146b58 Attempt to optimize virtual table queries with 'OR' expressions in the WHERE clause. (CVS 6527)
FossilOrigin-Name: f61e4cd93682fd98bea2a71d346f9eaa68454390
2009-04-21 09:02:45 +00:00
danielk1977 a55331620e Optimize queries of the form "SELECT count(*) FROM <tbl>" by adding a sqlite3BtreeCount() interface to the btree layer. (CVS 6316)
FossilOrigin-Name: d4aa6593183224b6868a322511511c0bbf63b598
2009-02-24 10:01:51 +00:00
danielk1977 e2d7b24d08 Scan an index instead of a table for "SELECT count(*) FROM <tbl>" queries. Because an index is usually smaller than a table on disk, this saves some IO. (CVS 6315)
FossilOrigin-Name: 294ba6f743c9132dce0e73da480bd3c2071e7239
2009-02-23 17:33:49 +00:00
drh 103bd88cf7 Increased test coverage in where.c. (CVS 6146)
FossilOrigin-Name: 1e5725c5179660277c2e8c321877d7ee3ca21808
2009-01-08 21:00:02 +00:00
drh 171256c45c Increase test coverage of where.c. Make sure OR-optimization works on
UPDATE and DELETE in addition to SELECT.  (Bug found by coverage tests.) (CVS 6139)

FossilOrigin-Name: 4b2c08e8984befb12fa2173ca89d9f54cf764d22
2009-01-08 03:11:19 +00:00
drh 04bbcd5ce9 Fix a bug in the multi-index OR cost estimator. Remove leftover "breakpoint"
commands from test scripts. (CVS 6086)

FossilOrigin-Name: b090d5736d7eaec17a39d3133e1587b1d2a42acb
2008-12-30 17:55:00 +00:00
drh eb9441eb06 Add LEFT JOIN test cases for multi-index OR in where9.test. (CVS 6085)
FossilOrigin-Name: 96f3b62914adde34079f08428b4e2fe81c193612
2008-12-30 16:35:53 +00:00
drh 46129af9fb Get EXPLAIN QUERY PLAN working with the multi-index OR optimization.
Added new test script "where9.test". (CVS 6084)

FossilOrigin-Name: 4b6460221011e02bedb724169e8e4793e539e65a
2008-12-30 16:18:47 +00:00