Make sure min() and max() optimizations work for subqueries. Ticket #587. (CVS 1201)

FossilOrigin-Name: af73fbca839f8cbe39c21f1f9e439fe9b79005c8

src/select.c

@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle SELECT statements in SQLite.
 **
-** $Id: select.c,v 1.149 2004/01/24 20:18:13 drh Exp $
+** $Id: select.c,v 1.150 2004/01/30 02:01:04 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -1900,6 +1900,12 @@ static int simpleMinMaxQuery(Parse *pParse, Select *p, int eDest, int iParm){
     generateColumnTypes(pParse, p->pSrc, p->pEList);
   }
 
+  /* If the output is destined for a temporary table, open that table.
+  */
+  if( eDest==SRT_TempTable ){
+    sqliteVdbeAddOp(v, OP_OpenTemp, iParm, 0);
+  }
+
   /* Generating code to find the min or the max.  Basically all we have
   ** to do is find the first or the last entry in the chosen index.  If
   ** the min() or max() is on the INTEGER PRIMARY KEY, then find the first