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Experimental change to use a single-pass approach for DELETE statements on non-virtual tables that do not fire triggers or require foriegn-key processing.

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FossilOrigin-Name: eaeb2b80f6f8f83679c8323a81bb39570ec946fe
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dan
2015-09-12 19:26:11 +00:00
parent 04abf0878f
commit f0ee1d3c12
13 changed files with 338 additions and 113 deletions
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6
src/sqliteInt.h
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@@ -2352,6 +2352,7 @@ struct SrcList {
#define WHERE_WANT_DISTINCT 0x0400 /* All output needs to be distinct */
#define WHERE_SORTBYGROUP 0x0800 /* Support sqlite3WhereIsSorted() */
#define WHERE_REOPEN_IDX 0x1000 /* Try to use OP_ReopenIdx */
#define WHERE_ONEPASS_MULTIROW 0x2000 /* ONEPASS is ok with multiple rows */
/* Allowed return values from sqlite3WhereIsDistinct()
*/
@@ -3440,8 +3441,9 @@ int sqlite3ExprIsInteger(Expr*, int*);
int sqlite3ExprCanBeNull(const Expr*);
int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
int sqlite3IsRowid(const char*);
void sqlite3GenerateRowDelete(Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*);
void sqlite3GenerateRowDelete(
Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
void sqlite3ResolvePartIdxLabel(Parse*,int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,