sqlite-3.40.0/test/collate2.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 script is page cache subsystem.
#
# $Id: collate2.test,v 1.5 2007/02/01 23:02:46 drh Exp $

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

#
# Tests are organised as follows:
#
# collate2-1.* WHERE <expr> expressions (sqliteExprIfTrue).
# collate2-2.* WHERE NOT <expr> expressions (sqliteExprIfFalse).
# collate2-3.* SELECT <expr> expressions (sqliteExprCode).
# collate2-4.* Precedence of collation/data types in binary comparisons
# collate2-5.* JOIN syntax.
#

# Create a collation type BACKWARDS for use in testing. This collation type
# is similar to the built-in TEXT collation type except the order of
# characters in each string is reversed before the comparison is performed.
db collate BACKWARDS backwards_collate
proc backwards_collate {a b} {
  set ra {};
  set rb {}
  foreach c [split $a {}] { set ra $c$ra }
  foreach c [split $b {}] { set rb $c$rb }
  return [string compare $ra $rb]
}

# The following values are used in these tests:
# NULL   aa ab ba bb   aA aB bA bB   Aa Ab Ba Bb   AA AB BA BB
#
# The collation orders for each of the tested collation types are:
#
# BINARY:    NULL  AA AB Aa Ab  BA BB Ba Bb  aA aB aa ab  bA bB ba bb
# NOCASE:    NULL  aa aA Aa AA  ab aB Ab AB  ba bA Ba BA  bb bB Bb BB
# BACKWARDS: NULL  AA BA aA bA  AB BB aB bB  Aa Ba aa ba  Ab Bb ab bb
#
# These tests verify that the default collation type for a column is used
# for comparison operators (<, >, <=, >=, =) involving that column and
# an expression that is not a column with a default collation type.
#
# The collation sequences BINARY and NOCASE are built-in, the BACKWARDS
# collation sequence is implemented by the TCL proc backwards_collate
# above.
#
do_test collate2-1.0 {
  execsql {
    CREATE TABLE collate2t1(
      a COLLATE BINARY,
      b COLLATE NOCASE,
      c COLLATE BACKWARDS
    );
    INSERT INTO collate2t1 VALUES( NULL, NULL, NULL );

    INSERT INTO collate2t1 VALUES( 'aa', 'aa', 'aa' );
    INSERT INTO collate2t1 VALUES( 'ab', 'ab', 'ab' );
    INSERT INTO collate2t1 VALUES( 'ba', 'ba', 'ba' );
    INSERT INTO collate2t1 VALUES( 'bb', 'bb', 'bb' );

    INSERT INTO collate2t1 VALUES( 'aA', 'aA', 'aA' );
    INSERT INTO collate2t1 VALUES( 'aB', 'aB', 'aB' );
    INSERT INTO collate2t1 VALUES( 'bA', 'bA', 'bA' );
    INSERT INTO collate2t1 VALUES( 'bB', 'bB', 'bB' );

    INSERT INTO collate2t1 VALUES( 'Aa', 'Aa', 'Aa' );
    INSERT INTO collate2t1 VALUES( 'Ab', 'Ab', 'Ab' );
    INSERT INTO collate2t1 VALUES( 'Ba', 'Ba', 'Ba' );
    INSERT INTO collate2t1 VALUES( 'Bb', 'Bb', 'Bb' );

    INSERT INTO collate2t1 VALUES( 'AA', 'AA', 'AA' );
    INSERT INTO collate2t1 VALUES( 'AB', 'AB', 'AB' );
    INSERT INTO collate2t1 VALUES( 'BA', 'BA', 'BA' );
    INSERT INTO collate2t1 VALUES( 'BB', 'BB', 'BB' );
  }
  if {[info exists collate_test_use_index]} {
    execsql {
      CREATE INDEX collate2t1_i1 ON collate2t1(a);
      CREATE INDEX collate2t1_i2 ON collate2t1(b);
      CREATE INDEX collate2t1_i3 ON collate2t1(c);
    }
  }
} {}
do_test collate2-1.1 {
  execsql {
    SELECT a FROM collate2t1 WHERE a > 'aa' ORDER BY 1;
  }
} {ab bA bB ba bb}
do_test collate2-1.1.1 {
  execsql {
    SELECT a FROM collate2t1 WHERE a COLLATE binary > 'aa' ORDER BY 1;
  }
} {ab bA bB ba bb}
do_test collate2-1.1.2 {
  execsql {
    SELECT a FROM collate2t1 WHERE b COLLATE binary > 'aa' ORDER BY 1;
  }
} {ab bA bB ba bb}
do_test collate2-1.1.3 {
  execsql {
    SELECT a FROM collate2t1 WHERE c COLLATE binary > 'aa' ORDER BY 1;
  }
} {ab bA bB ba bb}
do_test collate2-1.2 {
  execsql {
    SELECT b FROM collate2t1 WHERE b > 'aa' ORDER BY 1, oid;
  }
} {ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.2.1 {
  execsql {
    SELECT b FROM collate2t1 WHERE a COLLATE nocase > 'aa'
     ORDER BY 1, oid;
  }
} {ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.2.2 {
  execsql {
    SELECT b FROM collate2t1 WHERE b COLLATE nocase > 'aa'
     ORDER BY 1, oid;
  }
} {ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.2.3 {
  execsql {
    SELECT b FROM collate2t1 WHERE c COLLATE nocase > 'aa'
     ORDER BY 1, oid;
  }
} {ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.3 {
  execsql {
    SELECT c FROM collate2t1 WHERE c > 'aa' ORDER BY 1;
  }
} {ba Ab Bb ab bb}
do_test collate2-1.3.1 {
  execsql {
    SELECT c FROM collate2t1 WHERE a COLLATE backwards > 'aa'
    ORDER BY 1;
  }
} {ba Ab Bb ab bb}
do_test collate2-1.3.2 {
  execsql {
    SELECT c FROM collate2t1 WHERE b COLLATE backwards > 'aa'
    ORDER BY 1;
  }
} {ba Ab Bb ab bb}
do_test collate2-1.3.3 {
  execsql {
    SELECT c FROM collate2t1 WHERE c COLLATE backwards > 'aa'
    ORDER BY 1;
  }
} {ba Ab Bb ab bb}
do_test collate2-1.4 {
  execsql {
    SELECT a FROM collate2t1 WHERE a < 'aa' ORDER BY 1;
  }
} {AA AB Aa Ab BA BB Ba Bb aA aB}
do_test collate2-1.5 {
  execsql {
    SELECT b FROM collate2t1 WHERE b < 'aa' ORDER BY 1, oid;
  }
} {}
do_test collate2-1.6 {
  execsql {
    SELECT c FROM collate2t1 WHERE c < 'aa' ORDER BY 1;
  }
} {AA BA aA bA AB BB aB bB Aa Ba}
do_test collate2-1.7 {
  execsql {
    SELECT a FROM collate2t1 WHERE a = 'aa';
  }
} {aa}
do_test collate2-1.8 {
  execsql {
    SELECT b FROM collate2t1 WHERE b = 'aa' ORDER BY oid;
  }
} {aa aA Aa AA}
do_test collate2-1.9 {
  execsql {
    SELECT c FROM collate2t1 WHERE c = 'aa';
  }
} {aa}
do_test collate2-1.10 {
  execsql {
    SELECT a FROM collate2t1 WHERE a >= 'aa' ORDER BY 1;
  }
} {aa ab bA bB ba bb}
do_test collate2-1.11 {
  execsql {
    SELECT b FROM collate2t1 WHERE b >= 'aa' ORDER BY 1, oid;
  }
} {aa aA Aa AA ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.12 {
  execsql {
    SELECT c FROM collate2t1 WHERE c >= 'aa' ORDER BY 1;
  }
} {aa ba Ab Bb ab bb}
do_test collate2-1.13 {
  execsql {
    SELECT a FROM collate2t1 WHERE a <= 'aa' ORDER BY 1;
  }
} {AA AB Aa Ab BA BB Ba Bb aA aB aa}
do_test collate2-1.14 {
  execsql {
    SELECT b FROM collate2t1 WHERE b <= 'aa' ORDER BY 1, oid;
  }
} {aa aA Aa AA}
do_test collate2-1.15 {
  execsql {
    SELECT c FROM collate2t1 WHERE c <= 'aa' ORDER BY 1;
  }
} {AA BA aA bA AB BB aB bB Aa Ba aa}
do_test collate2-1.16 {
  execsql {
    SELECT a FROM collate2t1 WHERE a BETWEEN 'Aa' AND 'Bb' ORDER BY 1;
  }
} {Aa Ab BA BB Ba Bb}
do_test collate2-1.17 {
  execsql {
    SELECT b FROM collate2t1 WHERE b BETWEEN 'Aa' AND 'Bb' ORDER BY 1, oid;
  }
} {aa aA Aa AA ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-1.18 {
  execsql {
    SELECT c FROM collate2t1 WHERE c BETWEEN 'Aa' AND 'Bb' ORDER BY 1;
  }
} {Aa Ba aa ba Ab Bb}
do_test collate2-1.19 {
  execsql {
    SELECT a FROM collate2t1 WHERE
      CASE a WHEN 'aa' THEN 1 ELSE 0 END
        ORDER BY 1, oid;
  }
} {aa}
do_test collate2-1.20 {
  execsql {
    SELECT b FROM collate2t1 WHERE
      CASE b WHEN 'aa' THEN 1 ELSE 0 END
        ORDER BY 1, oid;
  }
} {aa aA Aa AA}
do_test collate2-1.21 {
  execsql {
    SELECT c FROM collate2t1 WHERE
      CASE c WHEN 'aa' THEN 1 ELSE 0 END
        ORDER BY 1, oid;
  }
} {aa}

ifcapable subquery {
  do_test collate2-1.22 {
    execsql {
      SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb') ORDER BY 1, oid;
    }
  } {aa bb}
  do_test collate2-1.23 {
    execsql {
      SELECT b FROM collate2t1 WHERE b IN ('aa', 'bb') ORDER BY 1, oid;
    }
  } {aa aA Aa AA bb bB Bb BB}
  do_test collate2-1.24 {
    execsql {
      SELECT c FROM collate2t1 WHERE c IN ('aa', 'bb') ORDER BY 1, oid;
    }
  } {aa bb}
  do_test collate2-1.25 {
    execsql {
      SELECT a FROM collate2t1
        WHERE a IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {aa bb}
  do_test collate2-1.26 {
    execsql {
      SELECT b FROM collate2t1
        WHERE b IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {aa bb aA bB Aa Bb AA BB}
  do_test collate2-1.27 {
    execsql {
      SELECT c FROM collate2t1
        WHERE c IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {aa bb}
} ;# ifcapable subquery

do_test collate2-2.1 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT a > 'aa' ORDER BY 1;
  }
} {AA AB Aa Ab BA BB Ba Bb aA aB aa}
do_test collate2-2.2 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT b > 'aa' ORDER BY 1, oid;
  }
} {aa aA Aa AA}
do_test collate2-2.3 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT c > 'aa' ORDER BY 1;
  }
} {AA BA aA bA AB BB aB bB Aa Ba aa}
do_test collate2-2.4 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT a < 'aa' ORDER BY 1;
  }
} {aa ab bA bB ba bb}
do_test collate2-2.5 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT b < 'aa' ORDER BY 1, oid;
  }
} {aa aA Aa AA ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-2.6 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT c < 'aa' ORDER BY 1;
  }
} {aa ba Ab Bb ab bb}
do_test collate2-2.7 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT a = 'aa';
  }
} {ab ba bb aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
do_test collate2-2.8 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT b = 'aa';
  }
} {ab ba bb aB bA bB Ab Ba Bb AB BA BB}
do_test collate2-2.9 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT c = 'aa';
  }
} {ab ba bb aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
do_test collate2-2.10 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT a >= 'aa' ORDER BY 1;
  }
} {AA AB Aa Ab BA BB Ba Bb aA aB}
do_test collate2-2.11 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT b >= 'aa' ORDER BY 1, oid;
  }
} {}
do_test collate2-2.12 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT c >= 'aa' ORDER BY 1;
  }
} {AA BA aA bA AB BB aB bB Aa Ba}
do_test collate2-2.13 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT a <= 'aa' ORDER BY 1;
  }
} {ab bA bB ba bb}
do_test collate2-2.14 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT b <= 'aa' ORDER BY 1, oid;
  }
} {ab aB Ab AB ba bA Ba BA bb bB Bb BB}
do_test collate2-2.15 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT c <= 'aa' ORDER BY 1;
  }
} {ba Ab Bb ab bb}
do_test collate2-2.16 {
  execsql {
    SELECT a FROM collate2t1 WHERE a NOT BETWEEN 'Aa' AND 'Bb' ORDER BY 1;
  }
} {AA AB aA aB aa ab bA bB ba bb}
do_test collate2-2.17 {
  execsql {
    SELECT b FROM collate2t1 WHERE b NOT BETWEEN 'Aa' AND 'Bb' ORDER BY 1, oid;
  }
} {}
do_test collate2-2.18 {
  execsql {
    SELECT c FROM collate2t1 WHERE c NOT BETWEEN 'Aa' AND 'Bb' ORDER BY 1;
  }
} {AA BA aA bA AB BB aB bB ab bb}
do_test collate2-2.19 {
  execsql {
    SELECT a FROM collate2t1 WHERE NOT CASE a WHEN 'aa' THEN 1 ELSE 0 END;
  }
} {{} ab ba bb aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
do_test collate2-2.20 {
  execsql {
    SELECT b FROM collate2t1 WHERE NOT CASE b WHEN 'aa' THEN 1 ELSE 0 END;
  }
} {{} ab ba bb aB bA bB Ab Ba Bb AB BA BB}
do_test collate2-2.21 {
  execsql {
    SELECT c FROM collate2t1 WHERE NOT CASE c WHEN 'aa' THEN 1 ELSE 0 END;
  }
} {{} ab ba bb aA aB bA bB Aa Ab Ba Bb AA AB BA BB}

ifcapable subquery {
  do_test collate2-2.22 {
    execsql {
      SELECT a FROM collate2t1 WHERE NOT a IN ('aa', 'bb');
    }
  } {ab ba aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
  do_test collate2-2.23 {
    execsql {
      SELECT b FROM collate2t1 WHERE NOT b IN ('aa', 'bb');
    }
  } {ab ba aB bA Ab Ba AB BA}
  do_test collate2-2.24 {
    execsql {
      SELECT c FROM collate2t1 WHERE NOT c IN ('aa', 'bb');
    }
  } {ab ba aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
  do_test collate2-2.25 {
    execsql {
      SELECT a FROM collate2t1
        WHERE NOT a IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {ab ba aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
  do_test collate2-2.26 {
    execsql {
      SELECT b FROM collate2t1
        WHERE NOT b IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {ab ba aB bA Ab Ba AB BA}
  do_test collate2-2.27 {
    execsql {
      SELECT c FROM collate2t1
        WHERE NOT c IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'));
    }
  } {ab ba aA aB bA bB Aa Ab Ba Bb AA AB BA BB}
}

do_test collate2-3.1 {
  execsql {
    SELECT a > 'aa' FROM collate2t1;
  }
} {{} 0 1 1 1 0 0 1 1 0 0 0 0 0 0 0 0}
do_test collate2-3.2 {
  execsql {
    SELECT b > 'aa' FROM collate2t1;
  }
} {{} 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1}
do_test collate2-3.3 {
  execsql {
    SELECT c > 'aa' FROM collate2t1;
  }
} {{} 0 1 1 1 0 0 0 0 0 1 0 1 0 0 0 0}
do_test collate2-3.4 {
  execsql {
    SELECT a < 'aa' FROM collate2t1;
  }
} {{} 0 0 0 0 1 1 0 0 1 1 1 1 1 1 1 1}
do_test collate2-3.5 {
  execsql {
    SELECT b < 'aa' FROM collate2t1;
  }
} {{} 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}
do_test collate2-3.6 {
  execsql {
    SELECT c < 'aa' FROM collate2t1;
  }
} {{} 0 0 0 0 1 1 1 1 1 0 1 0 1 1 1 1}
do_test collate2-3.7 {
  execsql {
    SELECT a = 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}
do_test collate2-3.8 {
  execsql {
    SELECT b = 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0}
do_test collate2-3.9 {
  execsql {
    SELECT c = 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}
do_test collate2-3.10 {
  execsql {
    SELECT a <= 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 1 1 0 0 1 1 1 1 1 1 1 1}
do_test collate2-3.11 {
  execsql {
    SELECT b <= 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0}
do_test collate2-3.12 {
  execsql {
    SELECT c <= 'aa' FROM collate2t1;
  }
} {{} 1 0 0 0 1 1 1 1 1 0 1 0 1 1 1 1}
do_test collate2-3.13 {
  execsql {
    SELECT a >= 'aa' FROM collate2t1;
  }
} {{} 1 1 1 1 0 0 1 1 0 0 0 0 0 0 0 0}
do_test collate2-3.14 {
  execsql {
    SELECT b >= 'aa' FROM collate2t1;
  }
} {{} 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1}
do_test collate2-3.15 {
  execsql {
    SELECT c >= 'aa' FROM collate2t1;
  }
} {{} 1 1 1 1 0 0 0 0 0 1 0 1 0 0 0 0}
do_test collate2-3.16 {
  execsql {
    SELECT a BETWEEN 'Aa' AND 'Bb' FROM collate2t1;
  }
} {{} 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 1}
do_test collate2-3.17 {
  execsql {
    SELECT b BETWEEN 'Aa' AND 'Bb' FROM collate2t1;
  }
} {{} 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1}
do_test collate2-3.18 {
  execsql {
    SELECT c BETWEEN 'Aa' AND 'Bb' FROM collate2t1;
  }
} {{} 1 0 1 0 0 0 0 0 1 1 1 1 0 0 0 0}
do_test collate2-3.19 {
  execsql {
    SELECT CASE a WHEN 'aa' THEN 1 ELSE 0 END FROM collate2t1;
  }
} {0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}
do_test collate2-3.20 {
  execsql {
    SELECT CASE b WHEN 'aa' THEN 1 ELSE 0 END FROM collate2t1;
  }
} {0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0}
do_test collate2-3.21 {
  execsql {
    SELECT CASE c WHEN 'aa' THEN 1 ELSE 0 END FROM collate2t1;
  }
} {0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}

ifcapable subquery {
  do_test collate2-3.22 {
    execsql {
      SELECT a IN ('aa', 'bb') FROM collate2t1;
    }
  } {{} 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0}
  do_test collate2-3.23 {
    execsql {
      SELECT b IN ('aa', 'bb') FROM collate2t1;
    }
  } {{} 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1}
  do_test collate2-3.24 {
    execsql {
      SELECT c IN ('aa', 'bb') FROM collate2t1;
    }
  } {{} 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0}
  do_test collate2-3.25 {
    execsql {
      SELECT a IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'))
        FROM collate2t1;
    }
  } {{} 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0}
  do_test collate2-3.26 {
    execsql {
      SELECT b IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'))
        FROM collate2t1;
    }
  } {{} 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1}
  do_test collate2-3.27 {
    execsql {
      SELECT c IN (SELECT a FROM collate2t1 WHERE a IN ('aa', 'bb'))
        FROM collate2t1;
    }
  } {{} 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0}
}

do_test collate2-4.0 {
  execsql {
    CREATE TABLE collate2t2(b COLLATE binary);
    CREATE TABLE collate2t3(b text);
    INSERT INTO collate2t2 VALUES('aa');
    INSERT INTO collate2t3 VALUES('aa');
  }
} {}

# Test that when both sides of a binary comparison operator have
# default collation types, the collate type for the leftmost term
# is used.
do_test collate2-4.1 {
  execsql {
    SELECT collate2t1.a FROM collate2t1, collate2t2
      WHERE collate2t1.b = collate2t2.b;
  }
} {aa aA Aa AA}
do_test collate2-4.2 {
  execsql {
    SELECT collate2t1.a FROM collate2t1, collate2t2
      WHERE collate2t2.b = collate2t1.b;
  }
} {aa}

# Test that when one side has a default collation type and the other
# does not, the collation type is used.
do_test collate2-4.3 {
  execsql {
    SELECT collate2t1.a FROM collate2t1, collate2t3
      WHERE collate2t1.b = collate2t3.b||'';
  }
} {aa aA Aa AA}
do_test collate2-4.4 {
  execsql {
    SELECT collate2t1.a FROM collate2t1, collate2t3
      WHERE collate2t3.b||'' = collate2t1.b;
  }
} {aa aA Aa AA}

do_test collate2-4.5 {
  execsql {
    DROP TABLE collate2t3;
  }
} {}

#
# Test that the default collation types are used when the JOIN syntax
# is used in place of a WHERE clause.
#
# SQLite transforms the JOIN syntax into a WHERE clause internally, so
# the focus of these tests is to ensure that the table on the left-hand-side
# of the join determines the collation type used.
#
do_test collate2-5.0 {
  execsql {
    SELECT collate2t1.b FROM collate2t1 JOIN collate2t2 USING (b);
  }
} {aa aA Aa AA}
do_test collate2-5.1 {
  execsql {
    SELECT collate2t1.b FROM collate2t2 JOIN collate2t1 USING (b);
  }
} {aa}
do_test collate2-5.2 {
  execsql {
    SELECT collate2t1.b FROM collate2t1 NATURAL JOIN collate2t2;
  }
} {aa aA Aa AA}
do_test collate2-5.3 {
  execsql {
    SELECT collate2t1.b FROM collate2t2 NATURAL JOIN collate2t1;
  }
} {aa}
do_test collate2-5.4 {
  execsql {
    SELECT collate2t2.b FROM collate2t1 LEFT OUTER JOIN collate2t2 USING (b) order by collate2t1.oid;
  }
} {{} aa {} {} {} aa {} {} {} aa {} {} {} aa {} {} {}}
do_test collate2-5.5 {
  execsql {
    SELECT collate2t1.b, collate2t2.b FROM collate2t2 LEFT OUTER JOIN collate2t1 USING (b);
  }
} {aa aa}

finish_test