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Code generator tries to avoid pointless OP_IsNull and OP_Affinity opcodes.

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FossilOrigin-Name: ebb0c8a3e977dc741704e733b5a5d931d9b27028
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drh
2009-11-17 18:31:47 +00:00
parent 68ff78b1b0
commit 039fc32e84
6 changed files with 156 additions and 49 deletions
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src/sqliteInt.h
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@@ -2674,6 +2674,8 @@ int sqlite3ExprIsConstant(Expr*);
int sqlite3ExprIsConstantNotJoin(Expr*);
int sqlite3ExprIsConstantOrFunction(Expr*);
int sqlite3ExprIsInteger(Expr*, int*);
int sqlite3ExprCanBeNull(const Expr*);
int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
int sqlite3IsRowid(const char*);
void sqlite3GenerateRowDelete(Parse*, Table*, int, int, int, Trigger *, int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int*);