libsqlite/test/format3.test

#
# 2001 September 15
#
# 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 the library is able to correctly
# handle file-format 3 (version 2.6.x) databases.
#
# $Id: format3.test,v 1.4 2003/12/23 02:17:35 drh Exp $

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

# Create a bunch of data to sort against
#
do_test format3-1.0 {
  set fd [open data.txt w]
  puts $fd "1\tone\t0\tI\t3.141592653"
  puts $fd "2\ttwo\t1\tII\t2.15"
  puts $fd "3\tthree\t1\tIII\t4221.0"
  puts $fd "4\tfour\t2\tIV\t-0.0013442"
  puts $fd "5\tfive\t2\tV\t-11"
  puts $fd "6\tsix\t2\tVI\t0.123"
  puts $fd "7\tseven\t2\tVII\t123.0"
  puts $fd "8\teight\t3\tVIII\t-1.6"
  close $fd
  execsql {
    CREATE TABLE t1(
       n int,
       v varchar(10),
       log int,
       roman varchar(10),
       flt real
    );
    COPY t1 FROM 'data.txt'
  }
  file delete data.txt
  db close
  set ::bt [btree_open test.db]
  btree_begin_transaction $::bt
  set m [btree_get_meta $::bt]
  set m [lreplace $m 2 2 3]
  eval btree_update_meta $::bt $m
  btree_commit $::bt
  btree_close $::bt
  sqlite db test.db
  execsql {SELECT count(*) FROM t1}
} {8}

do_test format3-1.1 {
  execsql {SELECT n FROM t1 ORDER BY n}
} {1 2 3 4 5 6 7 8}
do_test format3-1.1.1 {
  execsql {SELECT n FROM t1 ORDER BY n ASC}
} {1 2 3 4 5 6 7 8}
do_test format3-1.1.1 {
  execsql {SELECT ALL n FROM t1 ORDER BY n ASC}
} {1 2 3 4 5 6 7 8}
do_test format3-1.2 {
  execsql {SELECT n FROM t1 ORDER BY n DESC}
} {8 7 6 5 4 3 2 1}
do_test format3-1.3a {
  execsql {SELECT v FROM t1 ORDER BY v}
} {eight five four one seven six three two}
do_test format3-1.3b {
  execsql {SELECT n FROM t1 ORDER BY v}
} {8 5 4 1 7 6 3 2}
do_test format3-1.4 {
  execsql {SELECT n FROM t1 ORDER BY v DESC}
} {2 3 6 7 1 4 5 8}
do_test format3-1.5 {
  execsql {SELECT flt FROM t1 ORDER BY flt}
} {-11 -1.6 -0.0013442 0.123 2.15 3.141592653 123.0 4221.0}
do_test format3-1.6 {
  execsql {SELECT flt FROM t1 ORDER BY flt DESC}
} {4221.0 123.0 3.141592653 2.15 0.123 -0.0013442 -1.6 -11}
do_test format3-1.7 {
  execsql {SELECT roman FROM t1 ORDER BY roman}
} {I II III IV V VI VII VIII}
do_test format3-1.8 {
  execsql {SELECT n FROM t1 ORDER BY log, flt}
} {1 2 3 5 4 6 7 8}
do_test format3-1.8.1 {
  execsql {SELECT n FROM t1 ORDER BY log asc, flt}
} {1 2 3 5 4 6 7 8}
do_test format3-1.8.2 {
  execsql {SELECT n FROM t1 ORDER BY log, flt ASC}
} {1 2 3 5 4 6 7 8}
do_test format3-1.8.3 {
  execsql {SELECT n FROM t1 ORDER BY log ASC, flt asc}
} {1 2 3 5 4 6 7 8}
do_test format3-1.9 {
  execsql {SELECT n FROM t1 ORDER BY log, flt DESC}
} {1 3 2 7 6 4 5 8}
do_test format3-1.9.1 {
  execsql {SELECT n FROM t1 ORDER BY log ASC, flt DESC}
} {1 3 2 7 6 4 5 8}
do_test format3-1.10 {
  execsql {SELECT n FROM t1 ORDER BY log DESC, flt}
} {8 5 4 6 7 2 3 1}
do_test format3-1.11 {
  execsql {SELECT n FROM t1 ORDER BY log DESC, flt DESC}
} {8 7 6 4 5 3 2 1}

# These tests are designed to reach some hard-to-reach places
# inside the string comparison routines.
#
# (Later) The sorting behavior changed in 2.7.0.  But we will
# keep these tests.  You can never have too many test cases!
#
do_test format3-2.1.1 {
  execsql {
    UPDATE t1 SET v='x' || -flt;
    UPDATE t1 SET v='x-2b' where v=='x-0.123';
    SELECT v FROM t1 ORDER BY v;
  }
} {x-123 x-2.15 x-2b x-3.141592653 x-4221 x0.0013442 x1.6 x11}
do_test format3-2.1.2 {
  execsql {
    SELECT v FROM t1 ORDER BY substr(v,2,999);
  }
} {x-4221 x-123 x-3.141592653 x-2.15 x0.0013442 x1.6 x11 x-2b}
do_test format3-2.1.3 {
  execsql {
    SELECT v FROM t1 ORDER BY substr(v,2,999)+0.0;
  }
} {x-4221 x-123 x-3.141592653 x-2.15 x-2b x0.0013442 x1.6 x11}
do_test format3-2.1.4 {
  execsql {
    SELECT v FROM t1 ORDER BY substr(v,2,999) DESC;
  }
} {x-2b x11 x1.6 x0.0013442 x-2.15 x-3.141592653 x-123 x-4221}
do_test format3-2.1.5 {
  execsql {
    SELECT v FROM t1 ORDER BY substr(v,2,999)+0.0 DESC;
  }
} {x11 x1.6 x0.0013442 x-2b x-2.15 x-3.141592653 x-123 x-4221}

# This is a bug fix for 2.2.4.
# Strings are normally mapped to upper-case for a caseless comparison.
# But this can cause problems for characters in between 'Z' and 'a'.
#
do_test format3-3.1 {
  execsql {
    CREATE TABLE t2(a,b);
    INSERT INTO t2 VALUES('AGLIENTU',1);
    INSERT INTO t2 VALUES('AGLIE`',2);
    INSERT INTO t2 VALUES('AGNA',3);
    SELECT a, b FROM t2 ORDER BY a;
  }
} {AGLIENTU 1 AGLIE` 2 AGNA 3}
do_test format3-3.2 {
  execsql {
    SELECT a, b FROM t2 ORDER BY a DESC;
  }
} {AGNA 3 AGLIE` 2 AGLIENTU 1}
do_test format3-3.3 {
  execsql {
    DELETE FROM t2;
    INSERT INTO t2 VALUES('aglientu',1);
    INSERT INTO t2 VALUES('aglie`',2);
    INSERT INTO t2 VALUES('agna',3);
    SELECT a, b FROM t2 ORDER BY a;
  }
} {aglie` 2 aglientu 1 agna 3}
do_test format3-3.4 {
  execsql {
    SELECT a, b FROM t2 ORDER BY a DESC;
  }
} {agna 3 aglientu 1 aglie` 2}

# Version 2.7.0 testing.
#
do_test format3-4.1 {
  execsql {
    INSERT INTO t1 VALUES(9,'x2.7',3,'IX',4.0e5);
    INSERT INTO t1 VALUES(10,'x5.0e10',3,'X',-4.0e5);
    INSERT INTO t1 VALUES(11,'x-4.0e9',3,'XI',4.1e4);
    INSERT INTO t1 VALUES(12,'x01234567890123456789',3,'XII',-4.2e3);
    SELECT n FROM t1 ORDER BY n;
  }
} {1 2 3 4 5 6 7 8 9 10 11 12}
do_test format3-4.2 {
  execsql {
    SELECT n||'' FROM t1 ORDER BY 1;
  }
} {1 2 3 4 5 6 7 8 9 10 11 12}
do_test format3-4.3 {
  execsql {
    SELECT n+0 FROM t1 ORDER BY 1;
  }
} {1 2 3 4 5 6 7 8 9 10 11 12}
do_test format3-4.4 {
  execsql {
    SELECT n||'' FROM t1 ORDER BY 1 DESC;
  }
} {12 11 10 9 8 7 6 5 4 3 2 1}
do_test format3-4.5 {
  execsql {
    SELECT n+0 FROM t1 ORDER BY 1 DESC;
  }
} {12 11 10 9 8 7 6 5 4 3 2 1}
do_test format3-4.6 {
  execsql {
    SELECT v FROM t1 ORDER BY 1;
  }
} {x-123 x-2.15 x-2b x-3.141592653 x-4.0e9 x-4221 x0.0013442 x01234567890123456789 x1.6 x11 x2.7 x5.0e10}
do_test format3-4.7 {
  execsql {
    SELECT v FROM t1 ORDER BY 1 DESC;
  }
} {x5.0e10 x2.7 x11 x1.6 x01234567890123456789 x0.0013442 x-4221 x-4.0e9 x-3.141592653 x-2b x-2.15 x-123}
do_test format3-4.8 {
  execsql {
    SELECT substr(v,2,99) FROM t1 ORDER BY 1;
  }
} {-4.0e9 -4221 -123 -3.141592653 -2.15 0.0013442 1.6 2.7 11 5.0e10 01234567890123456789 -2b}

# Build some new test data, this time with indices.
#
do_test format3-5.0 {
  execsql {
    DROP TABLE t1;
    CREATE TABLE t1(w int, x text, y blob);
    DROP TABLE t2;
    CREATE TABLE t2(p varchar(1), q clob, r real, s numeric(8));
  }
  for {set i 1} {$i<=100} {incr i} {
    set w $i
    set x [expr {int(log($i)/log(2))}]
    set y [expr {$i*$i + 2*$i + 1}]
    execsql "INSERT INTO t1 VALUES($w,$x,$y)"
  }
  execsql {
    INSERT INTO t2 SELECT 101-w, x, (SELECT max(y) FROM t1)+1-y, y FROM t1;
    CREATE INDEX i1w ON t1(w);
    CREATE INDEX i1xy ON t1(x,y);
    CREATE INDEX i2p ON t2(p);
    CREATE INDEX i2r ON t2(r);
    CREATE INDEX i2qs ON t2(q, s);
  }
} {}

# Do an SQL statement.  Append the search count to the end of the result.
#
proc count sql {
  set ::sqlite_search_count 0
  return [concat [execsql $sql] $::sqlite_search_count]
}

# Verify that queries use an index.  We are using the special variable
# "sqlite_search_count" which tallys the number of executions of MoveTo
# and Next operators in the VDBE.  By verifing that the search count is
# small we can be assured that indices are being used properly.
#
do_test format3-5.1 {
  db close
  sqlite db test.db
  count {SELECT x, y FROM t1 WHERE w=10}
} {3 121 3}
do_test format3-5.2 {
  count {SELECT x, y FROM t1 WHERE w=11}
} {3 144 3}
do_test format3-5.3 {
  count {SELECT x, y FROM t1 WHERE 11=w}
} {3 144 3}
do_test format3-5.4 {
  count {SELECT x, y FROM t1 WHERE 11=w AND x>2}
} {3 144 3}
do_test format3-5.5 {
  count {SELECT x, y FROM t1 WHERE y<200 AND w=11 AND x>2}
} {3 144 3}
do_test format3-5.6 {
  count {SELECT x, y FROM t1 WHERE y<200 AND x>2 AND w=11}
} {3 144 3}
do_test format3-5.7 {
  count {SELECT x, y FROM t1 WHERE w=11 AND y<200 AND x>2}
} {3 144 3}
do_test format3-5.8 {
  count {SELECT x, y FROM t1 WHERE w>10 AND y=144 AND x=3}
} {3 144 3}
do_test format3-5.9 {
  count {SELECT x, y FROM t1 WHERE y=144 AND w>10 AND x=3}
} {3 144 3}
do_test format3-5.10 {
  count {SELECT x, y FROM t1 WHERE x=3 AND w>=10 AND y=121}
} {3 121 3}
do_test format3-5.11 {
  count {SELECT x, y FROM t1 WHERE x=3 AND y=100 AND w<10}
} {3 100 3}

# New for SQLite version 2.1: Verify that that inequality constraints
# are used correctly.
#
do_test format3-5.12 {
  count {SELECT w FROM t1 WHERE x=3 AND y<100}
} {8 3}
do_test format3-5.13 {
  count {SELECT w FROM t1 WHERE x=3 AND 100>y}
} {8 3}
do_test format3-5.14 {
  count {SELECT w FROM t1 WHERE 3=x AND y<100}
} {8 3}
do_test format3-5.15 {
  count {SELECT w FROM t1 WHERE 3=x AND 100>y}
} {8 3}
do_test format3-5.16 {
  count {SELECT w FROM t1 WHERE x=3 AND y<=100}
} {8 9 5}
do_test format3-5.17 {
  count {SELECT w FROM t1 WHERE x=3 AND 100>=y}
} {8 9 5}
do_test format3-5.18 {
  count {SELECT w FROM t1 WHERE x=3 AND y>225}
} {15 3}
do_test format3-5.19 {
  count {SELECT w FROM t1 WHERE x=3 AND 225<y}
} {15 3}
do_test format3-5.20 {
  count {SELECT w FROM t1 WHERE x=3 AND y>=225}
} {14 15 5}
do_test format3-5.21 {
  count {SELECT w FROM t1 WHERE x=3 AND 225<=y}
} {14 15 5}
do_test format3-5.22 {
  count {SELECT w FROM t1 WHERE x=3 AND y>121 AND y<196}
} {11 12 5}
do_test format3-5.23 {
  count {SELECT w FROM t1 WHERE x=3 AND y>=121 AND y<=196}
} {10 11 12 13 9}
do_test format3-5.24 {
  count {SELECT w FROM t1 WHERE x=3 AND 121<y AND 196>y}
} {11 12 5}
do_test format3-5.25 {
  count {SELECT w FROM t1 WHERE x=3 AND 121<=y AND 196>=y}
} {10 11 12 13 9}

# Need to work on optimizing the BETWEEN operator.
#
# do_test format3-5.26 {
#   count {SELECT w FROM t1 WHERE x=3 AND y BETWEEN 121 AND 196}
# } {10 11 12 13 9}

do_test format3-5.27 {
  count {SELECT w FROM t1 WHERE x=3 AND y+1==122}
} {10 17}
do_test format3-5.28 {
  count {SELECT w FROM t1 WHERE x+1=4 AND y+1==122}
} {10 99}
do_test format3-5.29 {
  count {SELECT w FROM t1 WHERE y==121}
} {10 99}


do_test format3-5.30 {
  count {SELECT w FROM t1 WHERE w>97}
} {98 99 100 6}
do_test format3-5.31 {
  count {SELECT w FROM t1 WHERE w>=97}
} {97 98 99 100 8}
do_test format3-5.33 {
  count {SELECT w FROM t1 WHERE w==97}
} {97 3}
do_test format3-5.34 {
  count {SELECT w FROM t1 WHERE w+1==98}
} {97 99}
do_test format3-5.35 {
  count {SELECT w FROM t1 WHERE w<3}
} {1 2 4}
do_test format3-5.36 {
  count {SELECT w FROM t1 WHERE w<=3}
} {1 2 3 6}
do_test format3-5.37 {
  count {SELECT w FROM t1 WHERE w+1<=4 ORDER BY w}
} {1 2 3 199}


# Do the same kind of thing except use a join as the data source.
#
do_test format3-6.1 {
  db close
  sqlite db test.db
  count {
    SELECT w, p FROM t2, t1
    WHERE x=q AND y=s AND r=8977
  }
} {34 67 6}
do_test format3-6.2 {
  count {
    SELECT w, p FROM t2, t1
    WHERE x=q AND s=y AND r=8977
  }
} {34 67 6}
do_test format3-6.3 {
  count {
    SELECT w, p FROM t2, t1
    WHERE x=q AND s=y AND r=8977 AND w>10
  }
} {34 67 6}
do_test format3-6.4 {
  count {
    SELECT w, p FROM t2, t1
    WHERE p<80 AND x=q AND s=y AND r=8977 AND w>10
  }
} {34 67 6}
do_test format3-6.5 {
  count {
    SELECT w, p FROM t2, t1
    WHERE p<80 AND x=q AND 8977=r AND s=y AND w>10
  }
} {34 67 6}
do_test format3-6.6 {
  count {
    SELECT w, p FROM t2, t1
    WHERE x=q AND p=77 AND s=y AND w>5
  }
} {24 77 6}
do_test format3-6.7 {
  count {
    SELECT w, p FROM t1, t2
    WHERE x=q AND p>77 AND s=y AND w=5
  }
} {5 96 6}

# Lets do a 3-way join.
#
do_test format3-7.1 {
  count {
    SELECT A.w, B.p, C.w FROM t1 as A, t2 as B, t1 as C
    WHERE C.w=101-B.p AND B.r=10202-A.y AND A.w=11
  }
} {11 90 11 9}
do_test format3-7.2 {
  count {
    SELECT A.w, B.p, C.w FROM t1 as A, t2 as B, t1 as C
    WHERE C.w=101-B.p AND B.r=10202-A.y AND A.w=12
  }
} {12 89 12 9}
do_test format3-7.3 {
  count {
    SELECT A.w, B.p, C.w FROM t1 as A, t2 as B, t1 as C
    WHERE A.w=15 AND B.p=C.w AND B.r=10202-A.y
  }
} {15 86 86 9}

# Test to see that the special case of a constant WHERE clause is
# handled.
#
do_test format3-8.1 {
  count {
    SELECT * FROM t1 WHERE 0
  }
} {0}
do_test format3-8.2 {
  count {
    SELECT * FROM t1 WHERE 1 LIMIT 1
  }
} {1 0 4 1}
do_test format3-8.3 {
  execsql {
    SELECT 99 WHERE 0
  }
} {}
do_test format3-8.4 {
  execsql {
    SELECT 99 WHERE 1
  }
} {99}

# Verify that IN operators in a WHERE clause are handled correctly.
#
do_test format3-9.1 {
  count {
    SELECT * FROM t1 WHERE rowid IN (1,2,3,1234) order by 1;
  }
} {1 0 4 2 1 9 3 1 16 0}
do_test format3-9.2 {
  count {
    SELECT * FROM t1 WHERE rowid+0 IN (1,2,3,1234) order by 1;
  }
} {1 0 4 2 1 9 3 1 16 199}
do_test format3-9.3 {
  count {
    SELECT * FROM t1 WHERE w IN (-1,1,2,3) order by 1;
  }
} {1 0 4 2 1 9 3 1 16 10}
do_test format3-9.4 {
  count {
    SELECT * FROM t1 WHERE w+0 IN (-1,1,2,3) order by 1;
  }
} {1 0 4 2 1 9 3 1 16 199}
do_test format3-9.5 {
  count {
    SELECT * FROM t1 WHERE rowid IN
       (select rowid from t1 where rowid IN (-1,2,4))
    ORDER BY 1;
  }
} {2 1 9 4 2 25 1}
do_test format3-9.6 {
  count {
    SELECT * FROM t1 WHERE rowid+0 IN
       (select rowid from t1 where rowid IN (-1,2,4))
    ORDER BY 1;
  }
} {2 1 9 4 2 25 199}
do_test format3-9.7 {
  count {
    SELECT * FROM t1 WHERE w IN
       (select rowid from t1 where rowid IN (-1,2,4))
    ORDER BY 1;
  }
} {2 1 9 4 2 25 7}
do_test format3-9.8 {
  count {
    SELECT * FROM t1 WHERE w+0 IN
       (select rowid from t1 where rowid IN (-1,2,4))
    ORDER BY 1;
  }
} {2 1 9 4 2 25 199}
do_test format3-9.9 {
  count {
    SELECT * FROM t1 WHERE x IN (1,7) ORDER BY 1;
  }
} {2 1 9 3 1 16 6}
do_test format3-9.10 {
  count {
    SELECT * FROM t1 WHERE x+0 IN (1,7) ORDER BY 1;
  }
} {2 1 9 3 1 16 199}
do_test format3-9.11 {
  count {
    SELECT * FROM t1 WHERE y IN (6400,8100) ORDER BY 1;
  }
} {79 6 6400 89 6 8100 199}
do_test format3-9.12 {
  count {
    SELECT * FROM t1 WHERE x=6 AND y IN (6400,8100) ORDER BY 1;
  }
} {79 6 6400 89 6 8100 74}
do_test format3-9.13 {
  count {
    SELECT * FROM t1 WHERE x IN (1,7) AND y NOT IN (6400,8100) ORDER BY 1;
  }
} {2 1 9 3 1 16 6}
do_test format3-9.14 {
  count {
    SELECT * FROM t1 WHERE x IN (1,7) AND y IN (9,10) ORDER BY 1;
  }
} {2 1 9 6}

# This procedure executes the SQL.  Then it checks the generated program
# for the SQL and appends a "nosort" to the result if the program contains the
# SortCallback opcode.  If the program does not contain the SortCallback
# opcode it appends "sort"
#
proc cksort {sql} {
  set data [execsql $sql]
  set prog [execsql "EXPLAIN $sql"]
  if {[regexp SortCallback $prog]} {set x sort} {set x nosort}
  lappend data $x
  return $data
}
# Check out the logic that attempts to implement the ORDER BY clause
# using an index rather than by sorting.
#
do_test format3-10.1 {
  execsql {
    CREATE TABLE t3(a,b,c);
    CREATE INDEX t3a ON t3(a);
    CREATE INDEX t3bc ON t3(b,c);
    CREATE INDEX t3acb ON t3(a,c,b);
    INSERT INTO t3 SELECT w, 101-w, y FROM t1;
    SELECT count(*), sum(a), sum(b), sum(c) FROM t3;
  }
} {100 5050 5050 348550}
do_test format3-10.2 {
  cksort {
    SELECT * FROM t3 ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 nosort}
do_test format3-10.3 {
  cksort {
    SELECT * FROM t3 ORDER BY a+1 LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 sort}
do_test format3-10.4 {
  cksort {
    SELECT * FROM t3 WHERE a<10 ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 nosort}
do_test format3-10.5 {
  cksort {
    SELECT * FROM t3 WHERE a>0 AND a<10 ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 nosort}
do_test format3-10.6 {
  cksort {
    SELECT * FROM t3 WHERE a>0 ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 nosort}
do_test format3-10.7 {
  cksort {
    SELECT * FROM t3 WHERE b>0 ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 sort}
do_test format3-10.8 {
  cksort {
    SELECT * FROM t3 WHERE a IN (3,5,7,1,9,4,2) ORDER BY a LIMIT 3
  }
} {1 100 4 2 99 9 3 98 16 sort}
do_test format3-10.9 {
  cksort {
    SELECT * FROM t3 WHERE a=1 AND c>0 ORDER BY a LIMIT 3
  }
} {1 100 4 nosort}
do_test format3-10.10 {
  cksort {
    SELECT * FROM t3 WHERE a=1 AND c>0 ORDER BY a LIMIT 3
  }
} {1 100 4 nosort}
do_test format3-10.11 {
  cksort {
    SELECT * FROM t3 WHERE a=1 AND c>0 ORDER BY a,c LIMIT 3
  }
} {1 100 4 nosort}
do_test format3-10.12 {
  cksort {
    SELECT * FROM t3 WHERE a=1 AND c>0 ORDER BY a,c,b LIMIT 3
  }
} {1 100 4 nosort}
do_test format3-10.13 {
  cksort {
    SELECT * FROM t3 WHERE a>0 ORDER BY a DESC LIMIT 3
  }
} {100 1 10201 99 2 10000 98 3 9801 nosort}
do_test format3-10.13.1 {
  cksort {
    SELECT * FROM t3 WHERE a>0 ORDER BY a+1 DESC LIMIT 3
  }
} {100 1 10201 99 2 10000 98 3 9801 sort}
do_test format3-10.14 {
  cksort {
    SELECT * FROM t3 ORDER BY b LIMIT 3
  }
} {100 1 10201 99 2 10000 98 3 9801 nosort}
do_test format3-10.15 {
  cksort {
    SELECT t3.a, t1.x FROM t3, t1 WHERE t3.a=t1.w ORDER BY t3.a LIMIT 3
  }
} {1 0 2 1 3 1 nosort}
do_test format3-10.16 {
  cksort {
    SELECT t3.a, t1.x FROM t3, t1 WHERE t3.a=t1.w ORDER BY t1.x, t3.a LIMIT 3
  }
} {1 0 2 1 3 1 sort}
do_test format3-10.17 {
  cksort {
    SELECT y FROM t1 ORDER BY w COLLATE text LIMIT 3;
  }
} {4 121 10201 sort}
do_test format3-10.18 {
  cksort {
    SELECT y FROM t1 ORDER BY w COLLATE numeric LIMIT 3;
  }
} {4 9 16 sort}
do_test format3-10.19 {
  cksort {
    SELECT y FROM t1 ORDER BY w LIMIT 3;
  }
} {4 9 16 nosort}

# Check that all comparisons are numeric.  Similar tests in misc1.test
# check the same comparisons on a format4+ database and find that some
# are numeric and some are text.
#
do_test format3-11.1 {
  execsql {SELECT '0'=='0.0'}
} {1}
do_test format3-11.2 {
  execsql {SELECT '0'==0.0}
} {1}
do_test format3-11.3 {
  execsql {SELECT '123456789012345678901'=='123456789012345678900'}
} {1}
do_test format3-11.4 {
  execsql {
    CREATE TABLE t6(a INT UNIQUE, b TEXT UNIQUE);
    INSERT INTO t6 VALUES('0','0.0');
    SELECT * FROM t6;
  }
} {0 0.0}
do_test format3-11.5 {
  execsql {
    INSERT OR IGNORE INTO t6 VALUES(0.0,'x');
    SELECT * FROM t6;
  }
} {0 0.0}
do_test format3-11.6 {
  execsql {
    INSERT OR IGNORE INTO t6 VALUES('y',0);
    SELECT * FROM t6;
  }
} {0 0.0}
do_test format3-11.7 {
  execsql {
    CREATE TABLE t7(x INTEGER, y TEXT, z);
    INSERT INTO t7 VALUES(0,0,1);
    INSERT INTO t7 VALUES(0.0,0,2);
    INSERT INTO t7 VALUES(0,0.0,3);
    INSERT INTO t7 VALUES(0.0,0.0,4);
    SELECT DISTINCT x, y FROM t7 ORDER BY z;
  }
} {0 0}

# Make sure attempts to attach a format 3 database fail.
#
do_test format3-12.1 {
  file delete -force test2.db
  sqlite db2 test2.db
  catchsql {
    CREATE TABLE t8(x,y);
    ATTACH DATABASE 'test.db' AS format3;
  } db2;
} {1 {incompatible file format in auxiliary database: format3}}
do_test format3-12.2 {
  catchsql {
    ATTACH DATABASE 'test2.db' AS test2;
  }
} {1 {cannot attach auxiliary databases to an older format master database}}
db2 close

finish_test