/ Check-in [4b646022]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Get EXPLAIN QUERY PLAN working with the multi-index OR optimization. Added new test script "where9.test". (CVS 6084)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 4b6460221011e02bedb724169e8e4793e539e65a
User & Date: drh 2008-12-30 16:18:48
Context
2008-12-30
16:35
Add LEFT JOIN test cases for multi-index OR in where9.test. (CVS 6085) check-in: 96f3b629 user: drh tags: trunk
16:18
Get EXPLAIN QUERY PLAN working with the multi-index OR optimization. Added new test script "where9.test". (CVS 6084) check-in: 4b646022 user: drh tags: trunk
16:13
Add further pseudo-randomly generated test cases to where8.test. (CVS 6083) check-in: e01f6ef9 user: danielk1977 tags: trunk
Changes
Hide Diffs Unified Diffs Show Whitespace Changes Patch

Changes to src/where.c.

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
....
3178
3179
3180
3181
3182
3183
3184


3185
3186
3187
3188
3189
3190
3191
** This module contains C code that generates VDBE code used to process
** the WHERE clause of SQL statements.  This module is responsible for
** generating the code that loops through a table looking for applicable
** rows.  Indices are selected and used to speed the search when doing
** so is applicable.  Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
**
** $Id: where.c,v 1.353 2008/12/30 15:26:30 danielk1977 Exp $
*/
#include "sqliteInt.h"

/*
** Trace output macros
*/
#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
................................................................................
      zMsg = sqlite3MPrintf(db, "TABLE %s", pItem->zName);
      if( pItem->zAlias ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s AS %s", zMsg, pItem->zAlias);
      }
      if( (pLevel->plan.wsFlags & WHERE_INDEXED)!=0 ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s WITH INDEX %s",
           zMsg, pLevel->plan.u.pIdx->zName);


      }else if( pLevel->plan.wsFlags & (WHERE_ROWID_EQ|WHERE_ROWID_RANGE) ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s USING PRIMARY KEY", zMsg);
      }
#ifndef SQLITE_OMIT_VIRTUALTABLE
      else if( (pLevel->plan.wsFlags & WHERE_VIRTUALTABLE)!=0 ){
        sqlite3_index_info *pVtabIdx = pLevel->plan.u.pVtabIdx;
        zMsg = sqlite3MAppendf(db, zMsg, "%s VIRTUAL TABLE INDEX %d:%s", zMsg,







|







 







>
>







12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
....
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
** This module contains C code that generates VDBE code used to process
** the WHERE clause of SQL statements.  This module is responsible for
** generating the code that loops through a table looking for applicable
** rows.  Indices are selected and used to speed the search when doing
** so is applicable.  Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
**
** $Id: where.c,v 1.354 2008/12/30 16:18:48 drh Exp $
*/
#include "sqliteInt.h"

/*
** Trace output macros
*/
#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
................................................................................
      zMsg = sqlite3MPrintf(db, "TABLE %s", pItem->zName);
      if( pItem->zAlias ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s AS %s", zMsg, pItem->zAlias);
      }
      if( (pLevel->plan.wsFlags & WHERE_INDEXED)!=0 ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s WITH INDEX %s",
           zMsg, pLevel->plan.u.pIdx->zName);
      }else if( pLevel->plan.wsFlags & WHERE_MULTI_OR ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s VIA MULTI-INDEX UNION", zMsg);
      }else if( pLevel->plan.wsFlags & (WHERE_ROWID_EQ|WHERE_ROWID_RANGE) ){
        zMsg = sqlite3MAppendf(db, zMsg, "%s USING PRIMARY KEY", zMsg);
      }
#ifndef SQLITE_OMIT_VIRTUALTABLE
      else if( (pLevel->plan.wsFlags & WHERE_VIRTUALTABLE)!=0 ){
        sqlite3_index_info *pVtabIdx = pLevel->plan.u.pVtabIdx;
        zMsg = sqlite3MAppendf(db, zMsg, "%s VIRTUAL TABLE INDEX %d:%s", zMsg,

Added test/where9.test.

































































































































































































































































































































































































































































































































































































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
# 2008 December 30
#
# 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 file is testing the multi-index OR clause optimizer.
#
# $Id: where9.test,v 1.1 2008/12/30 16:18:48 drh Exp $

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

ifcapable !or_opt {
  finish_test
  return
}

# Evaluate SQL.  Return the result set followed by the
# and the number of full-scan steps.
#
proc count_steps {sql} {
  set r [db eval $sql]
  lappend r scan [db status step] sort [db status sort]
}


# Construct test data.  
# 
do_test where9-1.1 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d,e,f,g);
    INSERT INTO t1 VALUES(1,11,1001,1.001,100.1,'bcdefghij','yxwvuts');
    INSERT INTO t1 VALUES(2,22,1001,2.002,100.1,'cdefghijk','yxwvuts');
    INSERT INTO t1 VALUES(3,33,1001,3.003,100.1,'defghijkl','xwvutsr');
    INSERT INTO t1 VALUES(4,44,2002,4.004,200.2,'efghijklm','xwvutsr');
    INSERT INTO t1 VALUES(5,55,2002,5.005,200.2,'fghijklmn','xwvutsr');
    INSERT INTO t1 VALUES(6,66,2002,6.006,200.2,'ghijklmno','xwvutsr');
    INSERT INTO t1 VALUES(7,77,3003,7.007,300.3,'hijklmnop','xwvutsr');
    INSERT INTO t1 VALUES(8,88,3003,8.008,300.3,'ijklmnopq','wvutsrq');
    INSERT INTO t1 VALUES(9,99,3003,9.009,300.3,'jklmnopqr','wvutsrq');
    INSERT INTO t1 VALUES(10,110,4004,10.01,400.4,'klmnopqrs','wvutsrq');
    INSERT INTO t1 VALUES(11,121,4004,11.011,400.4,'lmnopqrst','wvutsrq');
    INSERT INTO t1 VALUES(12,132,4004,12.012,400.4,'mnopqrstu','wvutsrq');
    INSERT INTO t1 VALUES(13,143,5005,13.013,500.5,'nopqrstuv','vutsrqp');
    INSERT INTO t1 VALUES(14,154,5005,14.014,500.5,'opqrstuvw','vutsrqp');
    INSERT INTO t1 VALUES(15,165,5005,15.015,500.5,'pqrstuvwx','vutsrqp');
    INSERT INTO t1 VALUES(16,176,6006,16.016,600.6,'qrstuvwxy','vutsrqp');
    INSERT INTO t1 VALUES(17,187,6006,17.017,600.6,'rstuvwxyz','vutsrqp');
    INSERT INTO t1 VALUES(18,198,6006,18.018,600.6,'stuvwxyza','utsrqpo');
    INSERT INTO t1 VALUES(19,209,7007,19.019,700.7,'tuvwxyzab','utsrqpo');
    INSERT INTO t1 VALUES(20,220,7007,20.02,700.7,'uvwxyzabc','utsrqpo');
    INSERT INTO t1 VALUES(21,231,7007,21.021,700.7,'vwxyzabcd','utsrqpo');
    INSERT INTO t1 VALUES(22,242,8008,22.022,800.8,'wxyzabcde','utsrqpo');
    INSERT INTO t1 VALUES(23,253,8008,23.023,800.8,'xyzabcdef','tsrqpon');
    INSERT INTO t1 VALUES(24,264,8008,24.024,800.8,'yzabcdefg','tsrqpon');
    INSERT INTO t1 VALUES(25,275,9009,25.025,900.9,'zabcdefgh','tsrqpon');
    INSERT INTO t1 VALUES(26,286,9009,26.026,900.9,'abcdefghi','tsrqpon');
    INSERT INTO t1 VALUES(27,297,9009,27.027,900.9,'bcdefghij','tsrqpon');
    INSERT INTO t1 VALUES(28,308,10010,28.028,1001.0,'cdefghijk','srqponm');
    INSERT INTO t1 VALUES(29,319,10010,29.029,1001.0,'defghijkl','srqponm');
    INSERT INTO t1 VALUES(30,330,10010,30.03,1001.0,'efghijklm','srqponm');
    INSERT INTO t1 VALUES(31,341,11011,31.031,1101.1,'fghijklmn','srqponm');
    INSERT INTO t1 VALUES(32,352,11011,32.032,1101.1,'ghijklmno','srqponm');
    INSERT INTO t1 VALUES(33,363,11011,33.033,1101.1,'hijklmnop','rqponml');
    INSERT INTO t1 VALUES(34,374,12012,34.034,1201.2,'ijklmnopq','rqponml');
    INSERT INTO t1 VALUES(35,385,12012,35.035,1201.2,'jklmnopqr','rqponml');
    INSERT INTO t1 VALUES(36,396,12012,36.036,1201.2,'klmnopqrs','rqponml');
    INSERT INTO t1 VALUES(37,407,13013,37.037,1301.3,'lmnopqrst','rqponml');
    INSERT INTO t1 VALUES(38,418,13013,38.038,1301.3,'mnopqrstu','qponmlk');
    INSERT INTO t1 VALUES(39,429,13013,39.039,1301.3,'nopqrstuv','qponmlk');
    INSERT INTO t1 VALUES(40,440,14014,40.04,1401.4,'opqrstuvw','qponmlk');
    INSERT INTO t1 VALUES(41,451,14014,41.041,1401.4,'pqrstuvwx','qponmlk');
    INSERT INTO t1 VALUES(42,462,14014,42.042,1401.4,'qrstuvwxy','qponmlk');
    INSERT INTO t1 VALUES(43,473,15015,43.043,1501.5,'rstuvwxyz','ponmlkj');
    INSERT INTO t1 VALUES(44,484,15015,44.044,1501.5,'stuvwxyza','ponmlkj');
    INSERT INTO t1 VALUES(45,495,15015,45.045,1501.5,'tuvwxyzab','ponmlkj');
    INSERT INTO t1 VALUES(46,506,16016,46.046,1601.6,'uvwxyzabc','ponmlkj');
    INSERT INTO t1 VALUES(47,517,16016,47.047,1601.6,'vwxyzabcd','ponmlkj');
    INSERT INTO t1 VALUES(48,528,16016,48.048,1601.6,'wxyzabcde','onmlkji');
    INSERT INTO t1 VALUES(49,539,17017,49.049,1701.7,'xyzabcdef','onmlkji');
    INSERT INTO t1 VALUES(50,550,17017,50.05,1701.7,'yzabcdefg','onmlkji');
    INSERT INTO t1 VALUES(51,561,17017,51.051,1701.7,'zabcdefgh','onmlkji');
    INSERT INTO t1 VALUES(52,572,18018,52.052,1801.8,'abcdefghi','onmlkji');
    INSERT INTO t1 VALUES(53,583,18018,53.053,1801.8,'bcdefghij','nmlkjih');
    INSERT INTO t1 VALUES(54,594,18018,54.054,1801.8,'cdefghijk','nmlkjih');
    INSERT INTO t1 VALUES(55,605,19019,55.055,1901.9,'defghijkl','nmlkjih');
    INSERT INTO t1 VALUES(56,616,19019,56.056,1901.9,'efghijklm','nmlkjih');
    INSERT INTO t1 VALUES(57,627,19019,57.057,1901.9,'fghijklmn','nmlkjih');
    INSERT INTO t1 VALUES(58,638,20020,58.058,2002.0,'ghijklmno','mlkjihg');
    INSERT INTO t1 VALUES(59,649,20020,59.059,2002.0,'hijklmnop','mlkjihg');
    INSERT INTO t1 VALUES(60,660,20020,60.06,2002.0,'ijklmnopq','mlkjihg');
    INSERT INTO t1 VALUES(61,671,21021,61.061,2102.1,'jklmnopqr','mlkjihg');
    INSERT INTO t1 VALUES(62,682,21021,62.062,2102.1,'klmnopqrs','mlkjihg');
    INSERT INTO t1 VALUES(63,693,21021,63.063,2102.1,'lmnopqrst','lkjihgf');
    INSERT INTO t1 VALUES(64,704,22022,64.064,2202.2,'mnopqrstu','lkjihgf');
    INSERT INTO t1 VALUES(65,715,22022,65.065,2202.2,'nopqrstuv','lkjihgf');
    INSERT INTO t1 VALUES(66,726,22022,66.066,2202.2,'opqrstuvw','lkjihgf');
    INSERT INTO t1 VALUES(67,737,23023,67.067,2302.3,'pqrstuvwx','lkjihgf');
    INSERT INTO t1 VALUES(68,748,23023,68.068,2302.3,'qrstuvwxy','kjihgfe');
    INSERT INTO t1 VALUES(69,759,23023,69.069,2302.3,'rstuvwxyz','kjihgfe');
    INSERT INTO t1 VALUES(70,770,24024,70.07,2402.4,'stuvwxyza','kjihgfe');
    INSERT INTO t1 VALUES(71,781,24024,71.071,2402.4,'tuvwxyzab','kjihgfe');
    INSERT INTO t1 VALUES(72,792,24024,72.072,2402.4,'uvwxyzabc','kjihgfe');
    INSERT INTO t1 VALUES(73,803,25025,73.073,2502.5,'vwxyzabcd','jihgfed');
    INSERT INTO t1 VALUES(74,814,25025,74.074,2502.5,'wxyzabcde','jihgfed');
    INSERT INTO t1 VALUES(75,825,25025,75.075,2502.5,'xyzabcdef','jihgfed');
    INSERT INTO t1 VALUES(76,836,26026,76.076,2602.6,'yzabcdefg','jihgfed');
    INSERT INTO t1 VALUES(77,847,26026,77.077,2602.6,'zabcdefgh','jihgfed');
    INSERT INTO t1 VALUES(78,858,26026,78.078,2602.6,'abcdefghi','ihgfedc');
    INSERT INTO t1 VALUES(79,869,27027,79.079,2702.7,'bcdefghij','ihgfedc');
    INSERT INTO t1 VALUES(80,880,27027,80.08,2702.7,'cdefghijk','ihgfedc');
    INSERT INTO t1 VALUES(81,891,27027,81.081,2702.7,'defghijkl','ihgfedc');
    INSERT INTO t1 VALUES(82,902,28028,82.082,2802.8,'efghijklm','ihgfedc');
    INSERT INTO t1 VALUES(83,913,28028,83.083,2802.8,'fghijklmn','hgfedcb');
    INSERT INTO t1 VALUES(84,924,28028,84.084,2802.8,'ghijklmno','hgfedcb');
    INSERT INTO t1 VALUES(85,935,29029,85.085,2902.9,'hijklmnop','hgfedcb');
    INSERT INTO t1 VALUES(86,946,29029,86.086,2902.9,'ijklmnopq','hgfedcb');
    INSERT INTO t1 VALUES(87,957,29029,87.087,2902.9,'jklmnopqr','hgfedcb');
    INSERT INTO t1 VALUES(88,968,30030,88.088,3003.0,'klmnopqrs','gfedcba');
    INSERT INTO t1 VALUES(89,979,30030,89.089,3003.0,'lmnopqrst','gfedcba');
    INSERT INTO t1 VALUES(90,NULL,30030,90.09,3003.0,'mnopqrstu','gfedcba');
    INSERT INTO t1 VALUES(91,1001,NULL,91.091,3103.1,'nopqrstuv','gfedcba');
    INSERT INTO t1 VALUES(92,1012,31031,NULL,3103.1,'opqrstuvw','gfedcba');
    INSERT INTO t1 VALUES(93,1023,31031,93.093,NULL,'pqrstuvwx','fedcbaz');
    INSERT INTO t1 VALUES(94,1034,32032,94.094,3203.2,NULL,'fedcbaz');
    INSERT INTO t1 VALUES(95,1045,32032,95.095,3203.2,'rstuvwxyz',NULL);
    INSERT INTO t1 VALUES(96,NULL,NULL,96.096,3203.2,'stuvwxyza','fedcbaz');
    INSERT INTO t1 VALUES(97,1067,33033,NULL,NULL,'tuvwxyzab','fedcbaz');
    INSERT INTO t1 VALUES(98,1078,33033,98.098,3303.3,NULL,NULL);
    INSERT INTO t1 VALUES(99,NULL,NULL,NULL,NULL,NULL,NULL);
    CREATE INDEX t1b ON t1(b);
    CREATE INDEX t1c ON t1(c);
    CREATE INDEX t1d ON t1(d);
    CREATE INDEX t1e ON t1(e);
    CREATE INDEX t1f ON t1(f);
    CREATE INDEX t1g ON t1(g);
    CREATE TABLE t2(a INTEGER PRIMARY KEY,b,c,d,e,f,g);
    INSERT INTO t2 SELECT * FROM t1;
    CREATE INDEX t2b ON t2(b,c);
    CREATE INDEX t2c ON t2(c,e);
    CREATE INDEX t2d ON t2(d,g);
    CREATE INDEX t2e ON t2(e,f,g);
    CREATE INDEX t2f ON t2(f,b,d,c);
    CREATE INDEX t2g ON t2(g,f);
  }
} {}

do_test where9-1.2.1 {
  count_steps {
    SELECT a FROM t1
     WHERE b IS NULL
        OR c IS NULL
        OR d IS NULL
    ORDER BY a
  }
} {90 91 92 96 97 99 scan 0 sort 0}
do_test where9-1.2.2 {
  count_steps {
    SELECT a FROM t1
     WHERE +b IS NULL
        OR c IS NULL
        OR d IS NULL
    ORDER BY a
  }
} {90 91 92 96 97 99 scan 98 sort 0}
do_test where9-1.2.3 {
  count_steps {
    SELECT a FROM t1
     WHERE b IS NULL
        OR +c IS NULL
        OR d IS NULL
    ORDER BY a
  }
} {90 91 92 96 97 99 scan 98 sort 0}
do_test where9-1.2.4 {
  count_steps {
    SELECT a FROM t1
     WHERE b IS NULL
        OR c IS NULL
        OR +d IS NULL
    ORDER BY a
  }
} {90 91 92 96 97 99 scan 98 sort 0}
do_test where9-1.3 {
  count_steps {
    SELECT a FROM t1
     WHERE (b IS NULL AND c NOT NULL AND d NOT NULL)
        OR (b NOT NULL AND c IS NULL AND d NOT NULL)
        OR (b NOT NULL AND c NOT NULL AND d IS NULL)
    ORDER BY a
  }
} {90 91 92 97 scan 0 sort 0}
do_test where9-1.4 {
  count_steps {
    SELECT a FROM t1
     WHERE (b>=950 AND b<=1010) OR (b IS NULL AND c NOT NULL)
    ORDER BY a
  }
} {87 88 89 90 91 scan 0 sort 0}
do_test where9-1.5 {
  count_steps {
    SELECT a FROM t1
     WHERE a=83
        OR b=913
        OR c=28028
        OR (d>=82 AND d<83)
        OR (e>2802 AND e<2803) 
        OR f='fghijklmn'
        OR g='hgfedcb'
    ORDER BY a
  }
} {5 31 57 82 83 84 85 86 87 scan 0 sort 0}
do_test where9-1.6 {
  count_steps {
    SELECT a FROM t1
     WHERE b=1012
        OR (d IS NULL AND e IS NOT NULL)
  }
} {92 scan 0 sort 0}
do_test where9-1.7 {
  count_steps {
    SELECT a FROM t1
     WHERE (b=1012 OR (d IS NULL AND e IS NOT NULL))
       AND f!=g
  }
} {92 scan 0 sort 0}
do_test where9-1.8 {
  count_steps {
    SELECT a FROM t1
     WHERE (b=1012 OR (d IS NULL AND e IS NOT NULL))
       AND f==g
  }
} {scan 0 sort 0}

do_test where9-2.1 {
  count_steps {
    SELECT t2.a FROM t1, t2
     WHERE t1.a=80
       AND (t1.c=t2.c OR t1.d=t2.d)
    ORDER BY 1
  }
} {79 80 81 scan 0 sort 1}
do_test where9-2.2 {
  count_steps {
    SELECT t2.a FROM t1, t2
     WHERE t1.a=80
       AND ((t1.c=t2.c AND t1.d=t2.d) OR t1.f=t2.f)
    ORDER BY 1
  }
} {2 28 54 80 scan 0 sort 1}
do_test where9-2.3 {
  count_steps {
    SELECT coalesce(t2.a,9999)
      FROM t1 LEFT JOIN t2 ON (t1.c=t2.c AND t1.d=t2.d) OR t1.f=t2.f
     WHERE t1.a=80
    ORDER BY 1
  }
} {2 28 54 80 scan 0 sort 1}
do_test where9-2.4 {
  count_steps {
    SELECT coalesce(t2.a,9999)
      FROM t1 LEFT JOIN t2 ON (t1.c+1=t2.c AND t1.d=t2.d) OR (t1.f||'x')=t2.f
     WHERE t1.a=80
    ORDER BY 1
  }
} {9999 scan 0 sort 1}


ifcapable explain {
  do_test where9-3.1 {
    set r [db eval {
      EXPLAIN QUERY PLAN
      SELECT t2.a FROM t1, t2
       WHERE t1.a=80
         AND ((t1.c=t2.c AND t1.d=t2.d) OR t1.f=t2.f)
    }]
    set a [expr {[lsearch $r {TABLE t2 VIA MULTI-INDEX UNION}]>=0}]
    set b [expr {[lsearch $r {TABLE t2 WITH INDEX t2f}]>=0}]
    set c [expr {([lsearch $r {TABLE t2 WITH INDEX t2c}]>=0)+
                  [lsearch $r {TABLE t2 WITH INDEX t2d}]>=0}]
    concat $a $b $c
  } {1 1 1}
  do_test where9-3.2 {
    set r [db eval {
      EXPLAIN QUERY PLAN
      SELECT coalesce(t2.a,9999)
        FROM t1 LEFT JOIN t2 ON (t1.c+1=t2.c AND t1.d=t2.d) OR (t1.f||'x')=t2.f
       WHERE t1.a=80
    }]
    set a [expr {[lsearch $r {TABLE t2 VIA MULTI-INDEX UNION}]>=0}]
    set b [expr {[lsearch $r {TABLE t2 WITH INDEX t2f}]>=0}]
    set c [expr {([lsearch $r {TABLE t2 WITH INDEX t2c}]>=0)+
                  [lsearch $r {TABLE t2 WITH INDEX t2d}]>=0}]
    concat $a $b $c
  } {1 1 1}
} 

finish_test