# 2005 December 21

#

# 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 descending indices.

#

# $Id: descidx1.test,v 1.10 2008/03/19 00:21:31 drh Exp $

#

set testdir [file dirname $argv0]

source $testdir/tester.tcl

db eval {PRAGMA legacy_file_format=OFF}

# This procedure sets the value of the file-format in file 'test.db'

# to $newval. Also, the schema cookie is incremented.

# 

proc set_file_format {newval} {

  hexio_write test.db 44 [hexio_render_int32 $newval]

  set schemacookie [hexio_get_int [hexio_read test.db 40 4]]

  incr schemacookie

  hexio_write test.db 40 [hexio_render_int32 $schemacookie]

  return {}

}

# This procedure returns the value of the file-format in file 'test.db'.

# 

proc get_file_format {{fname test.db}} {

  return [hexio_get_int [hexio_read $fname 44 4]]

}

# Verify that the file format starts as 4.

#

do_test descidx1-1.1 {

  execsql {

    CREATE TABLE t1(a,b);

    CREATE INDEX i1 ON t1(b ASC);

  }

  get_file_format

} {4}

do_test descidx1-1.2 {

  execsql {

    CREATE INDEX i2 ON t1(a DESC);

  }

  get_file_format

} {4}

# Put some information in the table and verify that the descending

# index actually works.

#

do_test descidx1-2.1 {

  execsql {

    INSERT INTO t1 VALUES(1,1);

    INSERT INTO t1 VALUES(2,2);

    INSERT INTO t1 SELECT a+2, a+2 FROM t1;

    INSERT INTO t1 SELECT a+4, a+4 FROM t1;

    SELECT b FROM t1 WHERE a>3 AND a<7;

  }

} {6 5 4}

do_test descidx1-2.2 {

  execsql {

    SELECT a FROM t1 WHERE b>3 AND b<7;

  }

} {4 5 6}

do_test descidx1-2.3 {

  execsql {

    SELECT b FROM t1 WHERE a>=3 AND a<7;

  }

} {6 5 4 3}

do_test descidx1-2.4 {

  execsql {

    SELECT b FROM t1 WHERE a>3 AND a<=7;

  }

} {7 6 5 4}

do_test descidx1-2.5 {

  execsql {

    SELECT b FROM t1 WHERE a>=3 AND a<=7;

  }

} {7 6 5 4 3}

do_test descidx1-2.6 {

  execsql {

    SELECT a FROM t1 WHERE b>=3 AND b<=7;

  }

} {3 4 5 6 7}

# This procedure executes the SQL.  Then it checks to see if the OP_Sort

# opcode was executed.  If an OP_Sort did occur, then "sort" is appended

# to the result.  If no OP_Sort happened, then "nosort" is appended.

#

# This procedure is used to check to make sure sorting is or is not

# occurring as expected.

#

proc cksort {sql} {

  set ::sqlite_sort_count 0

  set data [execsql $sql]

  if {$::sqlite_sort_count} {set x sort} {set x nosort}

  lappend data $x

  return $data

}

# Test sorting using a descending index.

#

do_test descidx1-3.1 {

  cksort {SELECT a FROM t1 ORDER BY a}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.2 {

  cksort {SELECT a FROM t1 ORDER BY a ASC}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.3 {

  cksort {SELECT a FROM t1 ORDER BY a DESC}

} {8 7 6 5 4 3 2 1 nosort}

do_test descidx1-3.4 {

  cksort {SELECT b FROM t1 ORDER BY a}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.5 {

  cksort {SELECT b FROM t1 ORDER BY a ASC}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.6 {

  cksort {SELECT b FROM t1 ORDER BY a DESC}

} {8 7 6 5 4 3 2 1 nosort}

do_test descidx1-3.7 {

  cksort {SELECT a FROM t1 ORDER BY b}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.8 {

  cksort {SELECT a FROM t1 ORDER BY b ASC}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.9 {

  cksort {SELECT a FROM t1 ORDER BY b DESC}

} {8 7 6 5 4 3 2 1 nosort}

do_test descidx1-3.10 {

  cksort {SELECT b FROM t1 ORDER BY b}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.11 {

  cksort {SELECT b FROM t1 ORDER BY b ASC}

} {1 2 3 4 5 6 7 8 nosort}

do_test descidx1-3.12 {

  cksort {SELECT b FROM t1 ORDER BY b DESC}

} {8 7 6 5 4 3 2 1 nosort}

do_test descidx1-3.21 {

  cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a}

} {4 5 6 7 nosort}

do_test descidx1-3.22 {

  cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC}

} {4 5 6 7 nosort}

do_test descidx1-3.23 {

  cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC}

} {7 6 5 4 nosort}

do_test descidx1-3.24 {

  cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a}

} {4 5 6 7 nosort}

do_test descidx1-3.25 {

  cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC}

} {4 5 6 7 nosort}

do_test descidx1-3.26 {

  cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC}

} {7 6 5 4 nosort}

# Create a table with indices that are descending on some terms and

# ascending on others.

#

ifcapable bloblit {

  do_test descidx1-4.1 {

    execsql {

      CREATE TABLE t2(a INT, b TEXT, c BLOB, d REAL);

      CREATE INDEX i3 ON t2(a ASC, b DESC, c ASC);

      CREATE INDEX i4 ON t2(b DESC, a ASC, d DESC);

      INSERT INTO t2 VALUES(1,'one',x'31',1.0);

      INSERT INTO t2 VALUES(2,'two',x'3232',2.0);

      INSERT INTO t2 VALUES(3,'three',x'333333',3.0);

      INSERT INTO t2 VALUES(4,'four',x'34343434',4.0);

      INSERT INTO t2 VALUES(5,'five',x'3535353535',5.0);

      INSERT INTO t2 VALUES(6,'six',x'363636363636',6.0);

      INSERT INTO t2 VALUES(2,'two',x'323232',2.1);

      INSERT INTO t2 VALUES(2,'zwei',x'3232',2.2);

      INSERT INTO t2 VALUES(2,NULL,NULL,2.3);

      SELECT count(*) FROM t2;

    }

  } {9}

  do_test descidx1-4.2 {

    execsql {

      SELECT d FROM t2 ORDER BY a;

    }

  } {1.0 2.2 2.0 2.1 2.3 3.0 4.0 5.0 6.0}

  do_test descidx1-4.3 {

    execsql {

      SELECT d FROM t2 WHERE a>=2;

    }

  } {2.2 2.0 2.1 2.3 3.0 4.0 5.0 6.0}

  do_test descidx1-4.4 {

    execsql {

      SELECT d FROM t2 WHERE a>2;

    }

  } {3.0 4.0 5.0 6.0}

  do_test descidx1-4.5 {

    execsql {

      SELECT d FROM t2 WHERE a=2 AND b>'two';

    }

  } {2.2}

  do_test descidx1-4.6 {

    execsql {

      SELECT d FROM t2 WHERE a=2 AND b>='two';

    }

  } {2.2 2.0 2.1}

  do_test descidx1-4.7 {

    execsql {

      SELECT d FROM t2 WHERE a=2 AND b<'two';

    }

  } {}

  do_test descidx1-4.8 {

    execsql {

      SELECT d FROM t2 WHERE a=2 AND b<='two';

    }

  } {2.0 2.1}

}

do_test descidx1-5.1 {

  execsql {

    CREATE TABLE t3(a,b,c,d);

    CREATE INDEX t3i1 ON t3(a DESC, b ASC, c DESC, d ASC);

    INSERT INTO t3 VALUES(0,0,0,0);

    INSERT INTO t3 VALUES(0,0,0,1);

    INSERT INTO t3 VALUES(0,0,1,0);

    INSERT INTO t3 VALUES(0,0,1,1);

    INSERT INTO t3 VALUES(0,1,0,0);

    INSERT INTO t3 VALUES(0,1,0,1);

    INSERT INTO t3 VALUES(0,1,1,0);

    INSERT INTO t3 VALUES(0,1,1,1);

    INSERT INTO t3 VALUES(1,0,0,0);

    INSERT INTO t3 VALUES(1,0,0,1);

    INSERT INTO t3 VALUES(1,0,1,0);

    INSERT INTO t3 VALUES(1,0,1,1);

    INSERT INTO t3 VALUES(1,1,0,0);

    INSERT INTO t3 VALUES(1,1,0,1);

    INSERT INTO t3 VALUES(1,1,1,0);

    INSERT INTO t3 VALUES(1,1,1,1);

    SELECT count(*) FROM t3;

  }

} {16}

do_test descidx1-5.2 {

  cksort {

    SELECT a||b||c||d FROM t3 ORDER BY a,b,c,d;

  }

} {0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 sort}

do_test descidx1-5.3 {

  cksort {

    SELECT a||b||c||d FROM t3 ORDER BY a DESC, b ASC, c DESC, d ASC;

  }

} {1010 1011 1000 1001 1110 1111 1100 1101 0010 0011 0000 0001 0110 0111 0100 0101 nosort}

do_test descidx1-5.4 {

  cksort {

    SELECT a||b||c||d FROM t3 ORDER BY a ASC, b DESC, c ASC, d DESC;

  }

} {0101 0100 0111 0110 0001 0000 0011 0010 1101 1100 1111 1110 1001 1000 1011 1010 nosort}

do_test descidx1-5.5 {

  cksort {

    SELECT a||b||c FROM t3 WHERE d=0 ORDER BY a DESC, b ASC, c DESC

  }

} {101 100 111 110 001 000 011 010 nosort}

do_test descidx1-5.6 {

  cksort {

    SELECT a||b||c FROM t3 WHERE d=0 ORDER BY a ASC, b DESC, c ASC

  }

} {010 011 000 001 110 111 100 101 nosort}

do_test descidx1-5.7 {

  cksort {

    SELECT a||b||c FROM t3 WHERE d=0 ORDER BY a ASC, b DESC, c DESC

  }

} {011 010 001 000 111 110 101 100 sort}

do_test descidx1-5.8 {

  cksort {

    SELECT a||b||c FROM t3 WHERE d=0 ORDER BY a ASC, b ASC, c ASC

  }

} {000 001 010 011 100 101 110 111 sort}

do_test descidx1-5.9 {

  cksort {

    SELECT a||b||c FROM t3 WHERE d=0 ORDER BY a DESC, b DESC, c ASC

  }

} {110 111 100 101 010 011 000 001 sort}

# Test the legacy_file_format pragma here because we have access to

# the get_file_format command.

#

ifcapable legacyformat {

  do_test descidx1-6.1 {

    db close

    file delete -force test.db test.db-journal

    sqlite3 db test.db

    execsql {PRAGMA legacy_file_format}

  } {1}

} else {

  do_test descidx1-6.1 {

    db close

    file delete -force test.db test.db-journal

    sqlite3 db test.db

    execsql {PRAGMA legacy_file_format}

  } {0}

}

do_test descidx1-6.2 {

  execsql {PRAGMA legacy_file_format=YES}

  execsql {PRAGMA legacy_file_format}

} {1}

do_test descidx1-6.3 {

  execsql {

    CREATE TABLE t1(a,b,c);

  }

  get_file_format

} {1}

ifcapable vacuum {

  # Verify that the file format is preserved across a vacuum.

  do_test descidx1-6.3.1 {

    execsql {VACUUM}

    get_file_format

  } {1}

}

do_test descidx1-6.4 {

  db close

  file delete -force test.db test.db-journal

  sqlite3 db test.db

  execsql {PRAGMA legacy_file_format=NO}

  execsql {PRAGMA legacy_file_format}

} {0}

do_test descidx1-6.5 {

  execsql {

    CREATE TABLE t1(a,b,c);

    CREATE INDEX i1 ON t1(a ASC, b DESC, c ASC);

    INSERT INTO t1 VALUES(1,2,3);

    INSERT INTO t1 VALUES(1,1,0);

    INSERT INTO t1 VALUES(1,2,1);

    INSERT INTO t1 VALUES(1,3,4);

  }

  get_file_format

} {4}

ifcapable vacuum {

  # Verify that the file format is preserved across a vacuum.

  do_test descidx1-6.6 {

    execsql {VACUUM}

    get_file_format

  } {4}

  do_test descidx1-6.7 {

    execsql {

      PRAGMA legacy_file_format=ON;

      VACUUM;

    }

    get_file_format

  } {4}

} 

finish_test