diff options
Diffstat (limited to 'src/expr.c')
| -rw-r--r-- | src/expr.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/expr.c b/src/expr.c index 13bacb90c..f8ee68dc2 100644 --- a/src/expr.c +++ b/src/expr.c @@ -2659,7 +2659,7 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** all members of the RHS set, skipping duplicates. ** ** A cursor is opened on the b-tree object that is the RHS of the IN operator -** and pX->iTable is set to the index of that cursor. +** and the *piTab parameter is set to the index of that cursor. ** ** The returned value of this function indicates the b-tree type, as follows: ** @@ -2679,7 +2679,10 @@ static int sqlite3InRhsIsConstant(Expr *pIn){ ** If the RHS of the IN operator is a list or a more complex subquery, then ** an ephemeral table might need to be generated from the RHS and then ** pX->iTable made to point to the ephemeral table instead of an -** existing table. +** existing table. In this case, the creation and initialization of the +** ephmeral table might be put inside of a subroutine, the EP_Subrtn flag +** will be set on pX and the pX->y.sub fields will be set to show where +** the subroutine is coded. ** ** The inFlags parameter must contain, at a minimum, one of the bits ** IN_INDEX_MEMBERSHIP or IN_INDEX_LOOP but not both. If inFlags contains @@ -2911,6 +2914,8 @@ int sqlite3FindInIndex( && ExprUseXList(pX) && (!sqlite3InRhsIsConstant(pX) || pX->x.pList->nExpr<=2) ){ + pParse->nTab--; /* Back out the allocation of the unused cursor */ + iTab = -1; /* Cursor is not allocated */ eType = IN_INDEX_NOOP; } |