drh
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ac6de304e5
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Allow an index paired with a NOT NULL constraint to be used for sorting
under the condition that the index be treated as a non-unique index.
FossilOrigin-Name: d78949fc93077e1aa7f05cf9f7e947727939cc96
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2011-02-11 03:56:11 +00:00 |
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drh
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4fa326564a
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Add another test case for the "x IS NULL" uniqueness problem of ticket #3824.
No changes to code. This just double-checks that everything is working now. (CVS 6548)
FossilOrigin-Name: 3ceae3579bc42974865cf6fe0bc42001e786e894
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2009-04-24 20:32:31 +00:00 |
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drh
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46619d6787
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Make sure that the optimizer realizes that an "x IS NULL" contraint does not
necessarily give a single-row result even on a UNIQUE index. Ticket #3824. (CVS 6545)
FossilOrigin-Name: 207335fdbf992a2f5bc5982b3163a38016ba1b21
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2009-04-24 14:51:42 +00:00 |