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Comment:Enhance whereLoopCheaperProperSubset(X,Y) so that it does not report true if X uses skip-scan less than Y, since in that case X might deserve to be cheaper even if it is a proper subset.
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SHA1: c106b755369c1f8546e897ecd2ac56fd09d6e885
User & Date: drh 2014-11-05 13:13:13
Context
2014-11-05
14:19
Add a test case to check that the previous commit is effective. check-in: 948d6e5d user: dan tags: trunk
13:13
Enhance whereLoopCheaperProperSubset(X,Y) so that it does not report true if X uses skip-scan less than Y, since in that case X might deserve to be cheaper even if it is a proper subset. check-in: c106b755 user: drh tags: trunk
09:07
Add the ".scanstats on" command to the shell tool. Executing this command causes the shell tool to print values from sqlite3_stmt_scanstatus() after each query is run. check-in: 7974c0ed user: dan tags: trunk
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Changes to src/where.c.