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When preparing an UPDATE statement, avoid generating VDBE code for those foreign key related actions and constraint checks that may be seen to be unnecessary by considering the subset of table columns potentially modified by the UPDATE.

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FossilOrigin-Name: e940b5de49baa1d6a4cf859fbbc0e0df86ac5dbf
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dan
2013-09-05 18:40:29 +00:00
parent 74dade2155
commit 8ff2d9561a
9 changed files with 169 additions and 48 deletions
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src/sqliteInt.h
+5 -5
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@@ -3209,18 +3209,18 @@ const char *sqlite3JournalModename(int);
** provided (enforcement of FK constraints requires the triggers sub-system).
*/
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
void sqlite3FkCheck(Parse*, Table*, int, int);
void sqlite3FkCheck(Parse*, Table*, int, int, int*, int);
void sqlite3FkDropTable(Parse*, SrcList *, Table*);
void sqlite3FkActions(Parse*, Table*, ExprList*, int);
void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int);
int sqlite3FkRequired(Parse*, Table*, int*, int);
u32 sqlite3FkOldmask(Parse*, Table*);
FKey *sqlite3FkReferences(Table *);
#else
#define sqlite3FkActions(a,b,c,d)
#define sqlite3FkActions(a,b,c,d,e,f)
#define sqlite3FkCheck(a,b,c,d)
#define sqlite3FkDropTable(a,b,c)
#define sqlite3FkOldmask(a,b) 0
#define sqlite3FkRequired(a,b,c,d) 0
#define sqlite3FkOldmask(a,b) 0
#define sqlite3FkRequired(a,b,c,d,e,f) 0
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY
void sqlite3FkDelete(sqlite3 *, Table*);