# 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 file is testing the SELECT statement.## $Id: select2.test,v 1.18 2002/04/02 13:26:11 drh Exp $set testdir [file dirname $argv0]source $testdir/tester.tcl# Create a table with some data#execsql {CREATE TABLE tbl1(f1 int, f2 int)}set f [open ./testdata1.txt w]for {set i 0} {$i<=30} {incr i} {  puts $f "[expr {$i%9}]\t[expr {$i%10}]"}close $fexecsql {COPY tbl1 FROM './testdata1.txt'}file delete -force ./testdata1.txtcatch {unset data}# Do a second query inside a first.#do_test select2-1.1 {  set sql {SELECT DISTINCT f1 FROM tbl1 ORDER BY f1}  set r {}  db eval $sql data {    set f1 $data(f1)    lappend r $f1:    set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"    db eval $sql2 d2 {      lappend r $d2(f2)    }  }  set r} {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}do_test select2-1.2 {  set sql {SELECT DISTINCT f1 FROM tbl1 WHERE f1>3 AND f1<5}  set r {}  db eval $sql data {    set f1 $data(f1)    lappend r $f1:    set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"    db eval $sql2 d2 {      lappend r $d2(f2)    }  }  set r} {4: 2 3 4}# Create a largish table#do_test select2-2.0 {  execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int)}  set f [open ./testdata1.txt w]  for {set i 1} {$i<=30000} {incr i} {    puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"  }  close $f  # execsql {--vdbe-trace-on--}  execsql {COPY tbl2 FROM './testdata1.txt'}  file delete -force ./testdata1.txt} {}do_test select2-2.1 {  execsql {SELECT count(*) FROM tbl2}} {30000}do_test select2-2.2 {  execsql {SELECT count(*) FROM tbl2 WHERE f2>1000}} {29500}do_test select2-3.1 {  execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}} {500}do_test select2-3.2a {  execsql {CREATE INDEX idx1 ON tbl2(f2)}} {}do_test select2-3.2b {  execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}} {500}do_test select2-3.2c {  execsql {SELECT f1 FROM tbl2 WHERE f2=1000}} {500}do_test select2-3.2d {  set sqlite_search_count 0  execsql {SELECT * FROM tbl2 WHERE 1000=f2}  set sqlite_search_count} {3}do_test select2-3.2e {  set sqlite_search_count 0  execsql {SELECT * FROM tbl2 WHERE f2=1000}  set sqlite_search_count} {3}# Make sure queries run faster with an index than without#do_test select2-3.3 {  execsql {DROP INDEX idx1}  set sqlite_search_count 0  execsql {SELECT f1 FROM tbl2 WHERE f2==2000}  set sqlite_search_count} {29999}# Make sure we can optimize functions in the WHERE clause that# use fields from two or more different table.  (Bug #6)#do_test select2-4.1 {  execsql {    CREATE TABLE aa(a);    CREATE TABLE bb(b);    INSERT INTO aa VALUES(1);    INSERT INTO aa VALUES(3);    INSERT INTO bb VALUES(2);    INSERT INTO bb VALUES(4);    SELECT * FROM aa, bb WHERE max(a,b)>2;  }} {1 4 3 2 3 4}do_test select2-4.2 {  execsql {    INSERT INTO bb VALUES(0);    SELECT * FROM aa, bb WHERE b;  }} {1 2 1 4 3 2 3 4}do_test select2-4.3 {  execsql {    SELECT * FROM aa, bb WHERE NOT b;  }} {1 0 3 0}do_test select2-4.4 {  execsql {    SELECT * FROM aa, bb WHERE min(a,b);  }} {1 2 1 4 3 2 3 4}do_test select2-4.5 {  execsql {    SELECT * FROM aa, bb WHERE NOT min(a,b);  }} {1 0 3 0}do_test select2-4.6 {  execsql {    SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 1 END;  }} {1 2 3 4}do_test select2-4.7 {  execsql {    SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 0 ELSE 1 END;  }} {1 4 1 0 3 2 3 0}finish_test