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-rw-r--r--src/insert.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/insert.c b/src/insert.c
index 7301d87a1..a69e625a1 100644
--- a/src/insert.c
+++ b/src/insert.c
@@ -2208,7 +2208,8 @@ static int xferOptimization(
if( pSrc==0 ){
return 0; /* FROM clause does not contain a real table */
}
- if( pSrc==pDest ){
+ if( pSrc->tnum==pDest->tnum && pSrc->pSchema==pDest->pSchema ){
+ testcase( pSrc!=pDest ); /* Possible due to bad sqlite_master.rootpage */
return 0; /* tab1 and tab2 may not be the same table */
}
if( HasRowid(pDest)!=HasRowid(pSrc) ){