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-rw-r--r--src/expr.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c
index b595c0adb..ed53fc7f9 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -4858,9 +4858,11 @@ int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTab){
if( sqlite3WindowCompare(pParse,pA->y.pWin,pB->y.pWin)!=0 ) return 2;
}
#endif
+ }else if( pA->op==TK_NULL ){
+ return 0;
}else if( pA->op==TK_COLLATE ){
if( sqlite3_stricmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2;
- }else if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){
+ }else if( ALWAYS(pB->u.zToken!=0) && strcmp(pA->u.zToken,pB->u.zToken)!=0 ){
return 2;
}
}