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Do not allow recursive CTEs that use aggregate queries in the recursive part.

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FossilOrigin-Name: 6d2999afbc25b9c238e4028f637c10eaaf0ec75e
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drh
2015-07-05 22:15:10 +00:00
parent 30ae503167
commit b63ce02f57
4 changed files with 24 additions and 13 deletions
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12
src/select.c
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@@ -2070,10 +2070,14 @@ static void generateWithRecursiveQuery(
/* Execute the recursive SELECT taking the single row in Current as
** the value for the recursive-table. Store the results in the Queue.
*/
p->pPrior = 0;
sqlite3Select(pParse, p, &destQueue);
assert( p->pPrior==0 );
p->pPrior = pSetup;
if( p->selFlags & SF_Aggregate ){
sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported");
}else{
p->pPrior = 0;
sqlite3Select(pParse, p, &destQueue);
assert( p->pPrior==0 );
p->pPrior = pSetup;
}
/* Keep running the loop until the Queue is empty */
sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop);