122 lines
3.3 KiB
Plaintext
122 lines
3.3 KiB
Plaintext
# Copyright (c) 1999, 2000 D. Richard Hipp
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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#
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# Author contact information:
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# drh@hwaci.com
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# http://www.hwaci.com/drh/
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the SELECT statement.
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#
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# $Id: select2.test,v 1.6 2000/06/08 16:54:40 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Create a table with some data
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#
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execsql {CREATE TABLE tbl1(f1 int, f2 int)}
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set f [open ./testdata1.txt w]
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for {set i 0} {$i<=30} {incr i} {
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puts $f "[expr {$i%9}]\t[expr {$i%10}]"
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}
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close $f
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execsql {COPY tbl1 FROM './testdata1.txt'}
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file delete -force ./testdata1.txt
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# Do a second query inside a first.
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#
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do_test select2-1.1 {
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set sql {SELECT DISTINCT f1 FROM tbl1 ORDER BY f1}
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set r {}
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db eval $sql data {
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set f1 $data(f1)
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lappend r $f1:
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set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"
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db eval $sql2 d2 {
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lappend r $d2(f2)
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}
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}
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set r
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} {0: 0 7 8 9 1: 0 1 8 9 2: 0 1 2 9 3: 0 1 2 3 4: 2 3 4 5: 3 4 5 6: 4 5 6 7: 5 6 7 8: 6 7 8}
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do_test select2-1.2 {
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set sql {SELECT DISTINCT f1 FROM tbl1 WHERE f1>3 AND f1<5}
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set r {}
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db eval $sql data {
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set f1 $data(f1)
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lappend r $f1:
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set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"
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db eval $sql2 d2 {
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lappend r $d2(f2)
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}
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}
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set r
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} {4: 2 3 4}
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# Create a largish table
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#
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do_test select2-2.0 {
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execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int)}
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set f [open ./testdata1.txt w]
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for {set i 1} {$i<=30000} {incr i} {
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puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"
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}
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close $f
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execsql {COPY tbl2 FROM './testdata1.txt'}
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file delete -force ./testdata1.txt
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} {}
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do_test select2-2.1 {
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execsql {SELECT count(*) FROM tbl2}
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} {30000}
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do_test select2-2.2 {
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execsql {SELECT count(*) FROM tbl2 WHERE f2>1000}
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} {29500}
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do_test select2-3.1 {
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execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}
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} {500}
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do_test select2-3.2a {
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execsql {CREATE INDEX idx1 ON tbl2(f2)}
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} {}
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do_test select2-3.2b {
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execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}
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} {500}
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do_test select2-3.2c {
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execsql {SELECT f1 FROM tbl2 WHERE f2=1000}
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} {500}
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do_test select2-3.2d {
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set t1 [lindex [time {execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}} 1] 0]
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set t2 [lindex [time {execsql {SELECT f1 FROM tbl2 WHERE f2=1000}} 1] 0]
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expr {$t1*0.9<$t2 && $t2*0.9<$t1}
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} {1}
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# Make sure queries run faster with an index than without
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#
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do_test select2-3.3 {
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set t1 [lindex [time {execsql {SELECT f1 from tbl2 WHERE f2==2000}} 1] 0]
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execsql {DROP INDEX idx1}
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set t2 [lindex [time {execsql {SELECT f1 FROM tbl2 WHERE f2==2000}} 1] 0]
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expr {$t1*25 < $t2}
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} {1}
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finish_test
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