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-rw-r--r--src/wherecode.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/wherecode.c b/src/wherecode.c
index 32dd2048b..8e8672ff9 100644
--- a/src/wherecode.c
+++ b/src/wherecode.c
@@ -2170,6 +2170,12 @@ Bitmask sqlite3WhereCodeOneLoopStart(
WO_EQ|WO_IN|WO_IS, 0);
if( pAlt==0 ) continue;
if( pAlt->wtFlags & (TERM_CODED) ) continue;
+ if( (pAlt->eOperator & WO_IN)
+ && (pAlt->pExpr->flags & EP_xIsSelect)
+ && (pAlt->pExpr->x.pSelect->pEList->nExpr>1)
+ ){
+ continue;
+ }
testcase( pAlt->eOperator & WO_EQ );
testcase( pAlt->eOperator & WO_IS );
testcase( pAlt->eOperator & WO_IN );