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Comment:Do not release registers used to hold the results of a compound select after just the first select has run. Ticket #2927. For now, we will never release the registers used to hold the result set, since the same register set will be used for each select. This is not an unacceptable register leak and it is the safest approach. (CVS 4778)
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: e9fcb793998be07eaea01404407087b71c29853d
User & Date: drh 2008-02-06 23:52:37.000
Context
2008-02-08
18:25
Change the test code used for speed tests so that it does not throw an exception if the time command returns "0 microseconds per iteration". (CVS 4779) (check-in: f37e8637d2 user: danielk1977 tags: trunk)
2008-02-06
23:52
Do not release registers used to hold the results of a compound select after just the first select has run. Ticket #2927. For now, we will never release the registers used to hold the result set, since the same register set will be used for each select. This is not an unacceptable register leak and it is the safest approach. (CVS 4778) (check-in: e9fcb79399 user: drh tags: trunk)
16:58
Version 3.5.6 (CVS 4777) (check-in: 1d82ab6987 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/select.c.
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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.411 2008/01/25 15:04:50 drh Exp $
*/
#include "sqliteInt.h"


/*
** Delete all the content of a Select structure but do not deallocate
** the select structure itself.








|








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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.412 2008/02/06 23:52:37 drh Exp $
*/
#include "sqliteInt.h"


/*
** Delete all the content of a Select structure but do not deallocate
** the select structure itself.
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  Vdbe *v = pParse->pVdbe;
  int i;
  int hasDistinct;        /* True if the DISTINCT keyword is present */
  int regResult;              /* Start of memory holding result set */
  int eDest = pDest->eDest;   /* How to dispose of results */
  int iParm = pDest->iParm;   /* First argument to disposal method */
  int nResultCol;             /* Number of result columns */
  int nToFree;                /* Number of result columns to release */

  if( v==0 ) return;
  assert( pEList!=0 );

  /* If there was a LIMIT clause on the SELECT statement, then do the check
  ** to see if this row should be output.
  */
  hasDistinct = distinct>=0 && pEList->nExpr>0;
  if( pOrderBy==0 && !hasDistinct ){
    codeOffset(v, p, iContinue);
  }

  /* Pull the requested columns.
  */
  if( nColumn>0 ){
    nResultCol = nColumn;
  }else{
    nResultCol = pEList->nExpr;
  }
  if( pDest->iMem>0 ){
    regResult = pDest->iMem;
    nToFree = 0;
  }else{
    pDest->iMem = regResult = sqlite3GetTempRange(pParse, nResultCol);
    nToFree = nResultCol;
  }

  if( nColumn>0 ){
    for(i=0; i<nColumn; i++){
      sqlite3VdbeAddOp3(v, OP_Column, srcTab, i, regResult+i);
    }
  }else if( eDest!=SRT_Exists ){
    /* If the destination is an EXISTS(...) expression, the actual
    ** values returned by the SELECT are not required.








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  Vdbe *v = pParse->pVdbe;
  int i;
  int hasDistinct;        /* True if the DISTINCT keyword is present */
  int regResult;              /* Start of memory holding result set */
  int eDest = pDest->eDest;   /* How to dispose of results */
  int iParm = pDest->iParm;   /* First argument to disposal method */
  int nResultCol;             /* Number of result columns */


  if( v==0 ) return;
  assert( pEList!=0 );

  /* If there was a LIMIT clause on the SELECT statement, then do the check
  ** to see if this row should be output.
  */
  hasDistinct = distinct>=0 && pEList->nExpr>0;
  if( pOrderBy==0 && !hasDistinct ){
    codeOffset(v, p, iContinue);
  }

  /* Pull the requested columns.
  */
  if( nColumn>0 ){
    nResultCol = nColumn;
  }else{
    nResultCol = pEList->nExpr;
  }
  if( pDest->iMem==0 ){



    pDest->iMem = sqlite3GetTempRange(pParse, nResultCol);

  }
  regResult = pDest->iMem;
  if( nColumn>0 ){
    for(i=0; i<nColumn; i++){
      sqlite3VdbeAddOp3(v, OP_Column, srcTab, i, regResult+i);
    }
  }else if( eDest!=SRT_Exists ){
    /* If the destination is an EXISTS(...) expression, the actual
    ** values returned by the SELECT are not required.
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    case SRT_Callback: {
      if( pOrderBy ){
        int r1 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nColumn, r1);
        pushOntoSorter(pParse, pOrderBy, p, r1);
        sqlite3ReleaseTempReg(pParse, r1);
      }else if( eDest==SRT_Subroutine ){
        nToFree = 0;  /* Preserve registers. Subroutine will need them. */
        sqlite3VdbeAddOp2(v, OP_Gosub, 0, iParm);
      }else{
        sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, nColumn);
      }
      break;
    }









<








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    case SRT_Callback: {
      if( pOrderBy ){
        int r1 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nColumn, r1);
        pushOntoSorter(pParse, pOrderBy, p, r1);
        sqlite3ReleaseTempReg(pParse, r1);
      }else if( eDest==SRT_Subroutine ){

        sqlite3VdbeAddOp2(v, OP_Gosub, 0, iParm);
      }else{
        sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, nColumn);
      }
      break;
    }
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  /* Jump to the end of the loop if the LIMIT is reached.
  */
  if( p->iLimit>=0 && pOrderBy==0 ){
    sqlite3VdbeAddOp2(v, OP_AddImm, p->iLimit, -1);
    sqlite3VdbeAddOp2(v, OP_IfZero, p->iLimit, iBreak);
  }
  sqlite3ReleaseTempRange(pParse, regResult, nToFree);
}

/*
** Given an expression list, generate a KeyInfo structure that records
** the collating sequence for each expression in that expression list.
**
** If the ExprList is an ORDER BY or GROUP BY clause then the resulting








<








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  /* Jump to the end of the loop if the LIMIT is reached.
  */
  if( p->iLimit>=0 && pOrderBy==0 ){
    sqlite3VdbeAddOp2(v, OP_AddImm, p->iLimit, -1);
    sqlite3VdbeAddOp2(v, OP_IfZero, p->iLimit, iBreak);
  }

}

/*
** Given an expression list, generate a KeyInfo structure that records
** the collating sequence for each expression in that expression list.
**
** If the ExprList is an ORDER BY or GROUP BY clause then the resulting
︙︙
Added test/tkt2927.test. 






























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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# 2008 Feb 6
#
# 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 is to test that ticket #2927 is fixed.
#
# $Id: tkt2927.test,v 1.1 2008/02/06 23:52:37 drh Exp $
#

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

# Create a database.
#
do_test tkt2927-1.1 {
  db eval {
    CREATE TABLE t1(a, b);
    INSERT INTO t1 VALUES(1,11);
    INSERT INTO t1 VALUES(2,22);
    INSERT INTO t1 VALUES(3,33);
    INSERT INTO t1 VALUES(4,44);
    INSERT INTO t1 VALUES(5,55);
    SELECT * FROM t1;
  }
} {1 11 2 22 3 33 4 44 5 55}


do_test tkt2927-2.1 {
  db eval {
    SELECT a, b FROM t1
    UNION ALL
    SELECT a, b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.2 {
breakpoint
#set sqlite_addop_trace 1
  db eval {
    SELECT a, b FROM t1
    UNION ALL
    SELECT a, abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.3 {
  db eval {
    SELECT a, b FROM t1
    UNION ALL
    SELECT abs(a), b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.4 {
  db eval {
    SELECT a, b FROM t1
    UNION ALL
    SELECT abs(a), abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.5 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION ALL
    SELECT a, b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.6 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION ALL
    SELECT a, abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.7 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION ALL
    SELECT abs(a), b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.8 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION ALL
    SELECT abs(a), abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.9 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION ALL
    SELECT a, b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.10 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION ALL
    SELECT a, abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.11 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION ALL
    SELECT abs(a), b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.12 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION ALL
    SELECT abs(a), abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.13 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a, b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.14 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a, abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.15 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION ALL
    SELECT abs(a), b FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-2.16 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION ALL
    SELECT abs(a), abs(b) FROM t1
  }
} {1 11 2 22 3 33 4 44 5 55 1 11 2 22 3 33 4 44 5 55}


do_test tkt2927-3.1 {
  db eval {
    SELECT a, b FROM t1
    UNION 
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.2 {
  db eval {
    SELECT a, b FROM t1
    UNION 
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.3 {
  db eval {
    SELECT a, b FROM t1
    UNION 
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.4 {
  db eval {
    SELECT a, b FROM t1
    UNION 
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.5 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION 
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.6 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION 
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.7 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION 
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.8 {
  db eval {
    SELECT a, abs(b) FROM t1
    UNION 
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.9 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION 
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.10 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION 
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.11 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION 
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.12 {
  db eval {
    SELECT abs(a), b FROM t1
    UNION 
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.13 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION 
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.14 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION 
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.15 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION 
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-3.16 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    UNION 
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}


do_test tkt2927-4.1 {
  db eval {
    SELECT a+b, a-b, a, b FROM t1
    UNION ALL
    SELECT a+b, a-b, a, b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.2 {
  db eval {
    SELECT a+b, a-b, a, b FROM t1
    UNION ALL
    SELECT a+b, a-b, a, abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.3 {
  db eval {
    SELECT a+b, a-b, a, b FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.4 {
  db eval {
    SELECT a+b, a-b, a, b FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.5 {
  db eval {
    SELECT a+b, a-b, a, abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, a, b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.6 {
  db eval {
    SELECT a+b, a-b, a, abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, a, abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.7 {
  db eval {
    SELECT a+b, a-b, a, abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.8 {
  db eval {
    SELECT a+b, a-b, a, abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.9 {
  db eval {
    SELECT a+b, a-b, abs(a), b FROM t1
    UNION ALL
    SELECT a+b, a-b, a, b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.10 {
  db eval {
    SELECT a+b, a-b, abs(a), b FROM t1
    UNION ALL
    SELECT a+b, a-b, a, abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.11 {
  db eval {
    SELECT a+b, a-b, abs(a), b FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.12 {
  db eval {
    SELECT a+b, a-b, abs(a), b FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.13 {
  db eval {
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, a, b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.14 {
  db eval {
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, a, abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.15 {
  db eval {
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), b FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}
do_test tkt2927-4.16 {
  db eval {
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
    UNION ALL
    SELECT a+b, a-b, abs(a), abs(b) FROM t1
  }
} {12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55 12 -10 1 11 24 -20 2 22 36 -30 3 33 48 -40 4 44 60 -50 5 55}


do_test tkt2927-5.1 {
  db eval {
    SELECT a, b FROM t1
    EXCEPT
    SELECT a, b FROM t1
  }
} {}
do_test tkt2927-5.2 {
  db eval {
    SELECT a, b FROM t1
    EXCEPT
    SELECT a, abs(b) FROM t1
  }
} {}
do_test tkt2927-5.3 {
  db eval {
    SELECT a, b FROM t1
    EXCEPT
    SELECT abs(a), b FROM t1
  }
} {}
do_test tkt2927-5.4 {
  db eval {
    SELECT a, b FROM t1
    EXCEPT
    SELECT abs(a), abs(b) FROM t1
  }
} {}
do_test tkt2927-5.5 {
  db eval {
    SELECT a, abs(b) FROM t1
    EXCEPT
    SELECT a, b FROM t1
  }
} {}
do_test tkt2927-5.6 {
  db eval {
    SELECT a, abs(b) FROM t1
    EXCEPT
    SELECT a, abs(b) FROM t1
  }
} {}
do_test tkt2927-5.7 {
  db eval {
    SELECT a, abs(b) FROM t1
    EXCEPT
    SELECT abs(a), b FROM t1
  }
} {}
do_test tkt2927-5.8 {
  db eval {
    SELECT a, abs(b) FROM t1
    EXCEPT
    SELECT abs(a), abs(b) FROM t1
  }
} {}
do_test tkt2927-5.9 {
  db eval {
    SELECT abs(a), b FROM t1
    EXCEPT
    SELECT a, b FROM t1
  }
} {}
do_test tkt2927-5.10 {
  db eval {
    SELECT abs(a), b FROM t1
    EXCEPT
    SELECT a, abs(b) FROM t1
  }
} {}
do_test tkt2927-5.11 {
  db eval {
    SELECT abs(a), b FROM t1
    EXCEPT
    SELECT abs(a), b FROM t1
  }
} {}
do_test tkt2927-5.12 {
  db eval {
    SELECT abs(a), b FROM t1
    EXCEPT
    SELECT abs(a), abs(b) FROM t1
  }
} {}
do_test tkt2927-5.13 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    EXCEPT
    SELECT a, b FROM t1
  }
} {}
do_test tkt2927-5.14 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    EXCEPT
    SELECT a, abs(b) FROM t1
  }
} {}
do_test tkt2927-5.15 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    EXCEPT
    SELECT abs(a), b FROM t1
  }
} {}
do_test tkt2927-5.16 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    EXCEPT
    SELECT abs(a), abs(b) FROM t1
  }
} {}


do_test tkt2927-6.1 {
  db eval {
    SELECT a, b FROM t1
    INTERSECT
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.2 {
  db eval {
    SELECT a, b FROM t1
    INTERSECT
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.3 {
  db eval {
    SELECT a, b FROM t1
    INTERSECT
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.4 {
  db eval {
    SELECT a, b FROM t1
    INTERSECT
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.5 {
  db eval {
    SELECT a, abs(b) FROM t1
    INTERSECT
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.6 {
  db eval {
    SELECT a, abs(b) FROM t1
    INTERSECT
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.7 {
  db eval {
    SELECT a, abs(b) FROM t1
    INTERSECT
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.8 {
  db eval {
    SELECT a, abs(b) FROM t1
    INTERSECT
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.9 {
  db eval {
    SELECT abs(a), b FROM t1
    INTERSECT
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.10 {
  db eval {
    SELECT abs(a), b FROM t1
    INTERSECT
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.11 {
  db eval {
    SELECT abs(a), b FROM t1
    INTERSECT
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.12 {
  db eval {
    SELECT abs(a), b FROM t1
    INTERSECT
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.13 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    INTERSECT
    SELECT a, b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.14 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    INTERSECT
    SELECT a, abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.15 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    INTERSECT
    SELECT abs(a), b FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}
do_test tkt2927-6.16 {
  db eval {
    SELECT abs(a), abs(b) FROM t1
    INTERSECT
    SELECT abs(a), abs(b) FROM t1
    ORDER BY 1
  }
} {1 11 2 22 3 33 4 44 5 55}

finish_test