*/
static int resolveOrderGroupBy(
  NameContext *pNC,     /* The name context of the SELECT statement */
  Select *pSelect,      /* The SELECT statement holding pOrderBy */
  ExprList *pOrderBy,   /* An ORDER BY or GROUP BY clause to resolve */
  const char *zType     /* Either "ORDER" or "GROUP", as appropriate */
){
  int i;                         /* Loop counter */
  int iCol;                      /* Column number */
  struct ExprList_item *pItem;   /* A term of the ORDER BY clause */
  Parse *pParse;                 /* Parsing context */
  int nResult;                   /* Number of terms in the result set */

  if( pOrderBy==0 ) return 0;
  nResult = pSelect->pEList->nExpr;
................................................................................
      continue;
    }

    /* Otherwise, treat the ORDER BY term as an ordinary expression */
    pItem->iOrderByCol = 0;
    if( sqlite3ResolveExprNames(pNC, pE) ){
      return 1;





    }
  }
  return sqlite3ResolveOrderGroupBy(pParse, pSelect, pOrderBy, zType);
}

/*
** Resolve names in the SELECT statement p and all of its descendents.

*/
static int resolveOrderGroupBy(
  NameContext *pNC,     /* The name context of the SELECT statement */
  Select *pSelect,      /* The SELECT statement holding pOrderBy */
  ExprList *pOrderBy,   /* An ORDER BY or GROUP BY clause to resolve */
  const char *zType     /* Either "ORDER" or "GROUP", as appropriate */
){
  int i, j;                      /* Loop counters */
  int iCol;                      /* Column number */
  struct ExprList_item *pItem;   /* A term of the ORDER BY clause */
  Parse *pParse;                 /* Parsing context */
  int nResult;                   /* Number of terms in the result set */

  if( pOrderBy==0 ) return 0;
  nResult = pSelect->pEList->nExpr;
................................................................................
      continue;
    }

    /* Otherwise, treat the ORDER BY term as an ordinary expression */
    pItem->iOrderByCol = 0;
    if( sqlite3ResolveExprNames(pNC, pE) ){
      return 1;
    }
    for(j=0; j<pSelect->pEList->nExpr; j++){
      if( sqlite3ExprCompare(pE, pSelect->pEList->a[j].pExpr)==0 ){
        pItem->iOrderByCol = j+1;
      }
    }
  }
  return sqlite3ResolveOrderGroupBy(pParse, pSelect, pOrderBy, zType);
}

/*
** Resolve names in the SELECT statement p and all of its descendents.

do_test select9-4.X {
  execsql {
    DROP INDEX i1;
    DROP INDEX i2;
    DROP VIEW v1;
  }
} {}





































finish_test

do_test select9-4.X {
  execsql {
    DROP INDEX i1;
    DROP INDEX i2;
    DROP VIEW v1;
  }
} {}

# Testing to make sure that queries involving a view of a compound select
# are planned efficiently.  This detects a problem reported on the mailing
# list on 2012-04-26.  See
#
#  http://www.mail-archive.com/sqlite-users%40sqlite.org/msg69746.html
#
# For additional information.
#
do_test select9-5.1 {
  db eval {
    CREATE TABLE t51(x, y);
    CREATE TABLE t52(x, y);
    CREATE VIEW v5 as
       SELECT x, y FROM t51
       UNION ALL
       SELECT x, y FROM t52;
    CREATE INDEX t51x ON t51(x);
    CREATE INDEX t52x ON t52(x);
    EXPLAIN QUERY PLAN
       SELECT * FROM v5 WHERE x='12345' ORDER BY y;
  }
} {~/SCAN TABLE/}  ;# Uses indices with "*"
do_test select9-5.2 {
  db eval {
    EXPLAIN QUERY PLAN
       SELECT x, y FROM v5 WHERE x='12345' ORDER BY y;
  }
} {~/SCAN TABLE/}  ;# Uses indices with "x, y"
do_test select9-5.3 {
  db eval {
    EXPLAIN QUERY PLAN
       SELECT x, y FROM v5 WHERE +x='12345' ORDER BY y;
  }
} {/SCAN TABLE/}   ;# Full table scan if the "+x" prevents index usage.


finish_test