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Overview
Comment::-) (CVS 77)
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: b3fb15ccde399318bde8c87362ecaa3a744f0680
User & Date: drh 2000-06-08 01:55:30.000
Context
2000-06-08
11:13
:-) (CVS 78) (check-in: 923c14fe12 user: drh tags: trunk)
01:55
:-) (CVS 77) (check-in: b3fb15ccde user: drh tags: trunk)
00:28
:-) (CVS 76) (check-in: 1902923308 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/select.c.
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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements.
**
** $Id: select.c,v 1.18 2000/06/08 00:28:52 drh Exp $
*/
#include "sqliteInt.h"

/*
** Allocate a new Select structure and return a pointer to that
** structure.
*/








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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements.
**
** $Id: select.c,v 1.19 2000/06/08 01:55:30 drh Exp $
*/
#include "sqliteInt.h"

/*
** Allocate a new Select structure and return a pointer to that
** structure.
*/
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  if( mustComplete ){
    for(i=0; i<pOrderBy->nExpr; i++){ pOrderBy->a[i].done = 0; }
  }
  if( fillInColumnList(pParse, pSelect) ){
    return 1;
  }
  if( pSelect->pPrior ){
    matchOrderbyToColumn(pParse, pSelect->pPrior, pOrderBy, iTable, 0);


  }
  pEList = pSelect->pEList;
  for(i=0; i<pOrderBy->nExpr; i++){
    Expr *pE = pOrderBy->a[i].pExpr;

    if( pOrderBy->a[i].done ) continue;
    for(j=0; j<pEList->nExpr; j++){
      int match = 0;
      if( pEList->a[i].zName && (pE->op==TK_ID || pE->op==TK_STRING) ){
        char *zName = pEList->a[i].zName;
        char *zLabel = 0;
        sqliteSetString(&zLabel, pE->token.z, pE->token.n, 0);
        sqliteDequote(zLabel);
        if( sqliteStrICmp(zName, zLabel)==0 ){ 
          match = 1; 
        }
      }
      if( match==0 && sqliteExprCompare(pE, pEList->a[i].pExpr) ){
        match = 1;
      }
      if( match ){
        pE->op = TK_FIELD;
        pE->iField = j;
        pE->iTable = iTable;
        pOrderBy->a[i].done = 1;
        break;
      }
    }
    if( mustComplete ){
      char zBuf[30];
      sprintf(zBuf,"%d",i+1);
      sqliteSetString(&pParse->zErrMsg, "ORDER BY term number ", zBuf, 
        " does not match any result column", 0);
      pParse->nErr++;
      nErr++;
      break;








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  if( mustComplete ){
    for(i=0; i<pOrderBy->nExpr; i++){ pOrderBy->a[i].done = 0; }
  }
  if( fillInColumnList(pParse, pSelect) ){
    return 1;
  }
  if( pSelect->pPrior ){
    if( matchOrderbyToColumn(pParse, pSelect->pPrior, pOrderBy, iTable, 0) ){
      return 1;
    }
  }
  pEList = pSelect->pEList;
  for(i=0; i<pOrderBy->nExpr; i++){
    Expr *pE = pOrderBy->a[i].pExpr;
    int match = 0;
    if( pOrderBy->a[i].done ) continue;
    for(j=0; j<pEList->nExpr; j++){

      if( pEList->a[i].zName && (pE->op==TK_ID || pE->op==TK_STRING) ){
        char *zName = pEList->a[i].zName;
        char *zLabel = 0;
        sqliteSetNString(&zLabel, pE->token.z, pE->token.n, 0);
        sqliteDequote(zLabel);
        if( sqliteStrICmp(zName, zLabel)==0 ){ 
          match = 1; 
        }
      }
      if( match==0 && sqliteExprCompare(pE, pEList->a[i].pExpr) ){
        match = 1;
      }
      if( match ){
        pE->op = TK_FIELD;
        pE->iField = j;
        pE->iTable = iTable;
        pOrderBy->a[i].done = 1;
        break;
      }
    }
    if( !match && mustComplete ){
      char zBuf[30];
      sprintf(zBuf,"%d",i+1);
      sqliteSetString(&pParse->zErrMsg, "ORDER BY term number ", zBuf, 
        " does not match any result column", 0);
      pParse->nErr++;
      nErr++;
      break;
︙︙
Changes to test/select4.test.
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#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing UNION, INTERSECT and EXCEPT operators
# in SELECT statements.
#
# $Id: select4.test,v 1.1 2000/06/08 00:28:52 drh Exp $

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

# Build some test data
#
do_test select4-1.0 {
  set fd [open data1.txt w]
  for {set i 1} {$i<32} {incr i} {
    for {set j 0} {pow(2,$j)<$i} {incr j} {}
    puts $fd "$i\t$j"
  }
  close $fd
  execsql {
    CREATE TABLE t1(n int, log int);
    COPY t1 FROM 'data1.txt'
  }
  file delete data1.txt


  execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
} {0 1 2 3 4 5}

# Union All operator
#
do_test select4-1.1a {
  lsort [execsql {SELECT DISTINCT log FROM t1}]








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#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing UNION, INTERSECT and EXCEPT operators
# in SELECT statements.
#
# $Id: select4.test,v 1.2 2000/06/08 01:55:31 drh Exp $

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

# Build some test data
#

set fd [open data1.txt w]
for {set i 1} {$i<32} {incr i} {
  for {set j 0} {pow(2,$j)<$i} {incr j} {}
  puts $fd "$i\t$j"
}
close $fd
execsql {
  CREATE TABLE t1(n int, log int);
  COPY t1 FROM 'data1.txt'
}
file delete data1.txt

do_test select4-1.0 {
  execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
} {0 1 2 3 4 5}

# Union All operator
#
do_test select4-1.1a {
  lsort [execsql {SELECT DISTINCT log FROM t1}]
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  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 UNION ALL
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2 3 3 3 3}










# Union operator
#
do_test select4-2.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    UNION
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {0 1 2 3 4 5 6 7 8}
do_test select4-2.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 UNION
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2 3 3 3 3}










# Except operator
#
do_test select4-3.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    EXCEPT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {0 1 2 3 4}
do_test select4-3.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 EXCEPT
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2}










# Intersect operator
#
do_test select4-4.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    INTERSECT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {5}
do_test select4-4.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 INTERSECT
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {3}

























































































finish_test








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  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 UNION ALL
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2 3 3 3 3}
do_test select4-1.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {ORDER BY clause should come after UNION ALL not before}}

# Union operator
#
do_test select4-2.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    UNION
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {0 1 2 3 4 5 6 7 8}
do_test select4-2.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 UNION
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2 3 3 3 3}
do_test select4-2.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    UNION
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {ORDER BY clause should come after UNION not before}}

# Except operator
#
do_test select4-3.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    EXCEPT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {0 1 2 3 4}
do_test select4-3.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 EXCEPT
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {0 1 2 2}
do_test select4-3.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    EXCEPT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {ORDER BY clause should come after EXCEPT not before}}

# Intersect operator
#
do_test select4-4.1 {
  execsql {
    SELECT DISTINCT log FROM t1
    INTERSECT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }
} {5}
do_test select4-4.2 {
  execsql {
    SELECT log FROM t1 WHERE n IN 
      (SELECT DISTINCT log FROM t1 INTERSECT
       SELECT n FROM t1 WHERE log=3)
    ORDER BY log;
  }
} {3}
do_test select4-4.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    INTERSECT
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {ORDER BY clause should come after INTERSECT not before}}

# Various error messages while processing UNION or INTERSECT
#
do_test select4-5.1 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t2
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {no such table: t2}}
do_test select4-5.2 {
  set v [catch {execsql {
    SELECT DISTINCT log AS "xyzzy" FROM t1
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY xyzzy;
  }} msg]
  lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.2b {
  set v [catch {execsql {
    SELECT DISTINCT log xyzzy FROM t1
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY 'xyzzy';
  }} msg]
  lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.2c {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY 'xyzzy';
  }} msg]
  lappend v $msg
} {1 {ORDER BY term number 1 does not match any result column}}
do_test select4-5.2d {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1
    INTERSECT
    SELECT n FROM t1 WHERE log=3
    ORDER BY 'xyzzy';
  }} msg]
  lappend v $msg
} {1 {ORDER BY term number 1 does not match any result column}}
do_test select4-5.2e {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY n;
  }} msg]
  lappend v $msg
} {0 {0 1 2 3 4 5 5 6 7 8}}
do_test select4-5.3 {
  set v [catch {execsql {
    SELECT DISTINCT log, n FROM t1
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]
  lappend v $msg
} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
do_test select4-5.4 {
  set v [catch {execsql {
    SELECT log FROM t1 WHERE n=2
    UNION ALL
    SELECT log FROM t1 WHERE n=3
    UNION ALL
    SELECT log FROM t1 WHERE n=4
    UNION ALL
    SELECT log FROM t1 WHERE n=5
    ORDER BY log;
  }} msg]
  lappend v $msg
} {0 {1 2 2 3}}

finish_test