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Overview
Comment:Additional test cases for comparisons against NULL in the WHERE clause and elsewhere in a SELECT. (CVS 4051)
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SHA1: 72612a0373c7abf8aadfdeb46358c0b0ae7b07a0
User & Date: drh 2007-06-08 08:43:10.000
Context
2007-06-08
18:27
Use C-sylte comments exclusively, never C++ comments. Ticket #2406. (CVS 4052) (check-in: 8f5b789fea user: drh tags: trunk)
08:43
Additional test cases for comparisons against NULL in the WHERE clause and elsewhere in a SELECT. (CVS 4051) (check-in: 72612a0373 user: drh tags: trunk)
08:39
Make sure rowid comparisons against NULL work correctly. Ticket #2404. (CVS 4050) (check-in: 11ee8ea43f user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to test/where5.test.
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#    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 NULL comparisons in the WHERE clause.
# See ticket #2404.
#
# $Id: where5.test,v 1.1 2007/06/08 08:39:02 drh Exp $

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

# Build some test data
#
do_test where5-1.0 {








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#    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 NULL comparisons in the WHERE clause.
# See ticket #2404.
#
# $Id: where5.test,v 1.2 2007/06/08 08:43:10 drh Exp $

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

# Build some test data
#
do_test where5-1.0 {
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  }
} {}
do_test where5-1.11 {
  execsql {
    SELECT * FROM t1 WHERE x!=NULL
  }
} {}












do_test where5-2.0 {
  execsql {
    SELECT * FROM t2 WHERE x<0
  }
} {-1}
do_test where5-2.1 {








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  }
} {}
do_test where5-1.11 {
  execsql {
    SELECT * FROM t1 WHERE x!=NULL
  }
} {}
do_test where5-1.12 {
  execsql {
    SELECT * FROM t1 WHERE x IS NULL
  }
} {}
do_test where5-1.13 {
  execsql {
    SELECT * FROM t1 WHERE x IS NOT NULL
  }
} {-1 0 1}


do_test where5-2.0 {
  execsql {
    SELECT * FROM t2 WHERE x<0
  }
} {-1}
do_test where5-2.1 {
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  }
} {}
do_test where5-2.11 {
  execsql {
    SELECT * FROM t2 WHERE x!=NULL
  }
} {}












do_test where5-3.0 {
  execsql {
    SELECT * FROM t3 WHERE x<0
  }
} {-1}
do_test where5-3.1 {








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  }
} {}
do_test where5-2.11 {
  execsql {
    SELECT * FROM t2 WHERE x!=NULL
  }
} {}
do_test where5-2.12 {
  execsql {
    SELECT * FROM t2 WHERE x IS NULL
  }
} {}
do_test where5-2.13 {
  execsql {
    SELECT * FROM t2 WHERE x IS NOT NULL
  }
} {-1 0 1}


do_test where5-3.0 {
  execsql {
    SELECT * FROM t3 WHERE x<0
  }
} {-1}
do_test where5-3.1 {
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  }
} {}
do_test where5-3.11 {
  execsql {
    SELECT * FROM t3 WHERE x!=NULL
  }
} {}




















































finish_test








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  }
} {}
do_test where5-3.11 {
  execsql {
    SELECT * FROM t3 WHERE x!=NULL
  }
} {}
do_test where5-3.12 {
  execsql {
    SELECT * FROM t3 WHERE x IS NULL
  }
} {}
do_test where5-3.13 {
  execsql {
    SELECT * FROM t3 WHERE x IS NOT NULL
  }
} {-1 0 1}

do_test where5-4.0 {
  execsql {
    SELECT x<NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.1 {
  execsql {
    SELECT x<=NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.2 {
  execsql {
    SELECT x==NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.3 {
  execsql {
    SELECT x>NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.4 {
  execsql {
    SELECT x>=NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.5 {
  execsql {
    SELECT x!=NULL FROM t3
  }
} {{} {} {}}
do_test where5-4.6 {
  execsql {
    SELECT x IS NULL FROM t3
  }
} {0 0 0}
do_test where5-4.7 {
  execsql {
    SELECT x IS NOT NULL FROM t3
  }
} {1 1 1}

finish_test