test/where8m.test

# 2008 December 23
#
# 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
# is testing of where.c. More specifically, the focus is the optimization
# of WHERE clauses that feature the OR operator.
#
# $Id: where8m.test,v 1.3 2009/06/05 17:09:12 drh Exp $

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

source $testdir/malloc_common.tcl

do_malloc_test where8m-1 -sqlprep {
  CREATE TABLE t1(a, b, c);
  CREATE INDEX i1 ON t1(a);
  CREATE INDEX i2 ON t1(b);
} -sqlbody {
  SELECT c FROM t1
  WHERE 
    a = 2 OR b = 'three' OR a = 4 OR b = 'five' OR a = 6 OR
    b = 'seven' OR a = 8 OR b = 'nine' OR a = 10
  ORDER BY rowid;

  SELECT c FROM t1 WHERE
    a = 1 OR a = 2 OR a = 3 OR a = 4 OR a = 5 OR a = 6;

  SELECT c FROM t1 WHERE
    a BETWEEN 1 AND 3  AND b < 5 AND b > 2 AND c = 4;
}

do_malloc_test where8m-2 -tclprep {
  db eval {
    BEGIN;
    CREATE TABLE t1(a, b, c);
    CREATE INDEX i1 ON t1(a);
    CREATE INDEX i2 ON t1(b);
  }
  for {set i 0} {$i < 1000} {incr i} {
    set ii [expr $i*$i]
    set iii [expr $i*$i]
    db eval { INSERT INTO t1 VALUES($i, $ii, $iii) }
  }
  db eval COMMIT
} -sqlbody {
  SELECT count(*) FROM t1 WHERE a BETWEEN 5 AND 995 OR b BETWEEN 5 AND 900000;
}

finish_test