Code generator tries to avoid pointless OP_IsNull and OP_Affinity opcodes.
FossilOrigin-Name: ebb0c8a3e977dc741704e733b5a5d931d9b27028
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index f98baf1..64c7c35 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2674,6 +2674,8 @@
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*);