drh
6a9b9527fa
The push-down optimization was being too aggressive such that it sometimes
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generated incorrect results. Reinstate the restriction (4) (with
qualifications) that was removed by check-ins
[b5d3dd8cb0b1e4] and [dd568c27b1d765].
FossilOrigin-Name: f08c1731b0b1dddcba190b094a35306a159713d3db939330f73075ff1d72c81e
2018-03-27 15:13:43 +00:00
drh
2589787c5a
If terms of the WHERE clause require that the right table in a LEFT JOIN
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not be a null row, then simplify the LEFT JOIN into an ordinary JOIN.
FossilOrigin-Name: 5b7abecc7ab8ccbbb8cb5e0f672e67625c2555ad03442efbf34cb395f5bb71a8
2018-03-20 21:16:15 +00:00
dan
4ea48144f9
Fix a failing assert() in the new code on this branch.
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FossilOrigin-Name: 74d857d178dfadea7e07ba47439fe11aa9d282b54caf78cd6961e593b37406d0
2018-01-31 14:07:01 +00:00
dan
8433e7166b
Update the omit-left-join optimization so that it works in some cases when the
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RHS is subject to a UNIQUE but not NOT NULL constraint.
FossilOrigin-Name: 88411a402b29f19d69e0d06d9099eabb98c238ddb7c07ce110236316f008753e
2018-01-29 17:08:52 +00:00
drh
53bf7175af
Fix a problem in the omit-table-from-left-join optimization
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from check-in [0cd82ee9a8413cf] that was discovered by OSSFuzz.
FossilOrigin-Name: b016c28fa5617a20ad34c005372e738d28f7fc4388d19ee0cb7add4ed19d74aa
2017-11-23 04:45:35 +00:00
dan
41203c6cf1
Update the omit-table-from-left-join optimization so that it can omit tables
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from the middle of the join as well as the end.
FossilOrigin-Name: 618ca9fe53d8d2d7b4f368e6ee404d5fceeecac0d689f32ab62af8a6cbb37401
2017-11-21 19:22:45 +00:00
dan
17f188e3cf
Fix a typo in a test script on this branch.
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FossilOrigin-Name: bff5dcfd2b29ee4834258914410a5dee69ec2727dd254053e3ebaf5090937694
2017-11-20 15:45:03 +00:00
dan
75dbf68b5b
Fix a problem preventing the planner from identifying scans that visit at most
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one row in cases where that property is guaranteed by a unique, not-null,
non-IPK column that is the leftmost in its table.
FossilOrigin-Name: 299d7ca52fec32f04ffd2b8561dd4b839e891792162f8b00259368683436b02d
2017-11-20 14:40:03 +00:00
dan
f112f0b3de
Add a test case for ticket [25e335f802dd].
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FossilOrigin-Name: e500c15a9f55aed1601f7c14169dd56fd76f1fdd
2017-01-10 17:37:49 +00:00
danielk1977
3e8c37e7f8
Modify test scripts to work when SQLITE_OMIT_SUBQUERY (along with other OMIT macros) is defined. (CVS 2251)
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FossilOrigin-Name: bb0254ab14417f0ab40f10f37cb63a60507f070a
2005-01-21 03:12:14 +00:00
drh
b733d03749
Add the ability to group FROM terms using parentheses. Names of columns in
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a join no longer include the table name. (CVS 1197)
FossilOrigin-Name: 3626f6d4a1adb4209d5bd9e6477343b52bddbdf2
2004-01-24 20:18:12 +00:00
