pNew->addrOpenEphm[0] = -1;
  pNew->addrOpenEphm[1] = -1;
  pNew->addrOpenEphm[2] = -1;
  if( db->mallocFailed ) {
    clearSelect(db, pNew);
    if( pNew!=&standin ) sqlite3DbFree(db, pNew);
    pNew = 0;


  }
  return pNew;
}

/*
** Delete the given Select structure and all of its substructures.
*/

  pNew->addrOpenEphm[0] = -1;
  pNew->addrOpenEphm[1] = -1;
  pNew->addrOpenEphm[2] = -1;
  if( db->mallocFailed ) {
    clearSelect(db, pNew);
    if( pNew!=&standin ) sqlite3DbFree(db, pNew);
    pNew = 0;
  }else{
    assert( pNew->pSrc!=0 || pParse->nErr>0 );
  }
  return pNew;
}

/*
** Delete the given Select structure and all of its substructures.
*/

    }
  }
  return mask;
}
static Bitmask exprSelectTableUsage(WhereMaskSet *pMaskSet, Select *pS){
  Bitmask mask = 0;
  while( pS ){
    SrcList *pSrc;
    mask |= exprListTableUsage(pMaskSet, pS->pEList);
    mask |= exprListTableUsage(pMaskSet, pS->pGroupBy);
    mask |= exprListTableUsage(pMaskSet, pS->pOrderBy);
    mask |= exprTableUsage(pMaskSet, pS->pWhere);
    mask |= exprTableUsage(pMaskSet, pS->pHaving);
    if( (pSrc = pS->pSrc)!=0 ){
      int i;
      for(i=0; i<pSrc->nSrc; i++){
        mask |= exprSelectTableUsage(pMaskSet, pSrc->a[i].pSelect);
        mask |= exprTableUsage(pMaskSet, pSrc->a[i].pOn);
      }
    }
    pS = pS->pPrior;

    }
  }
  return mask;
}
static Bitmask exprSelectTableUsage(WhereMaskSet *pMaskSet, Select *pS){
  Bitmask mask = 0;
  while( pS ){
    SrcList *pSrc = pS->pSrc;
    mask |= exprListTableUsage(pMaskSet, pS->pEList);
    mask |= exprListTableUsage(pMaskSet, pS->pGroupBy);
    mask |= exprListTableUsage(pMaskSet, pS->pOrderBy);
    mask |= exprTableUsage(pMaskSet, pS->pWhere);
    mask |= exprTableUsage(pMaskSet, pS->pHaving);
    if( ALWAYS(pSrc!=0) ){
      int i;
      for(i=0; i<pSrc->nSrc; i++){
        mask |= exprSelectTableUsage(pMaskSet, pSrc->a[i].pSelect);
        mask |= exprTableUsage(pMaskSet, pSrc->a[i].pOn);
      }
    }
    pS = pS->pPrior;

# 2011 September 16
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is testing correlated subqueries
#
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !subquery {
  finish_test
  return
}

do_test subquery2-1.1 {
  execsql {
    BEGIN;
    CREATE TABLE t1(a,b);
    INSERT INTO t1 VALUES(1,2);
    INSERT INTO t1 VALUES(3,4);
    INSERT INTO t1 VALUES(5,6);
    INSERT INTO t1 VALUES(7,8);
    CREATE TABLE t2(c,d);
    INSERT INTO t2 VALUES(1,1);
    INSERT INTO t2 VALUES(3,9);
    INSERT INTO t2 VALUES(5,25);
    INSERT INTO t2 VALUES(7,49);
    CREATE TABLE t3(e,f);
    INSERT INTO t3 VALUES(1,1);
    INSERT INTO t3 VALUES(3,27);
    INSERT INTO t3 VALUES(5,125);
    INSERT INTO t3 VALUES(7,343);
    COMMIT;
  }
  execsql {
    SELECT a FROM t1
     WHERE b IN (SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
  }
} {1 3 5 7}
do_test subquery2-1.2 {
  execsql {
    CREATE INDEX t1b ON t1(b);
    SELECT a FROM t1
     WHERE b IN (SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
  }
} {1 3 5 7}

do_test subquery2-1.11 {
  execsql {
    SELECT a FROM t1
     WHERE +b=(SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
  }
} {1}
do_test subquery2-1.12 {
  execsql {
    SELECT a FROM t1
     WHERE b=(SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
  }
} {1}

do_test subquery2-1.21 {
  execsql {
    SELECT a FROM t1
     WHERE +b=(SELECT x+1 FROM 
                 (SELECT DISTINCT f/d AS x FROM t2 JOIN t3 ON d*a=f))
  }
} {1 3 5 7}
do_test subquery2-1.22 {
  execsql {
    SELECT a FROM t1
     WHERE b=(SELECT x+1 FROM 
                 (SELECT DISTINCT f/d AS x FROM t2 JOIN t3 ON d*a=f))
  }
} {1 3 5 7}


finish_test