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Avoid redundant table b-tree cursor seeks in UPDATE statements that use the

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two-pass strategy.

FossilOrigin-Name: dc555b1039c6930f6d15355c698ff917a85e8056
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dan
2017-01-28 19:45:34 +00:00
parent 6034d47618
commit f64ece143c
7 changed files with 62 additions and 15 deletions
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src/sqliteInt.h
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@@ -2592,7 +2592,7 @@ struct SrcList {
#define WHERE_SORTBYGROUP 0x0200 /* Support sqlite3WhereIsSorted() */
#define WHERE_SEEK_TABLE 0x0400 /* Do not defer seeks on main table */
#define WHERE_ORDERBY_LIMIT 0x0800 /* ORDERBY+LIMIT on the inner loop */
/* 0x1000 not currently used */
#define WHERE_SEEK_UNIQ_TABLE 0x1000 /* Do not defer seeks if unique */
/* 0x2000 not currently used */
#define WHERE_USE_LIMIT 0x4000 /* Use the LIMIT in cost estimates */
/* 0x8000 not currently used */