# 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: descidx2.test,v 1.4 2006/07/11 14:17:52 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} { set bt [btree_open test.db 10 0] btree_begin_transaction $bt set meta [btree_get_meta $bt] lset meta 2 $newval ;# File format lset meta 1 [expr [lindex $meta 1]+1] ;# Schema cookie eval "btree_update_meta $bt $meta" btree_commit $bt btree_close $bt } # This procedure returns the value of the file-format in file 'test.db'. # proc get_file_format {{fname test.db}} { set bt [btree_open $fname 10 0] set meta [btree_get_meta $bt] btree_close $bt lindex $meta 2 } # Verify that the file format starts as 4 # do_test descidx2-1.1 { execsql { CREATE TABLE t1(a,b); CREATE INDEX i1 ON t1(b ASC); } get_file_format } {4} do_test descidx2-1.2 { execsql { CREATE INDEX i2 ON t1(a DESC); } get_file_format } {4} # Before adding any information to the database, set the file format # back to three. Then close and reopen the database. With the file # format set to three, SQLite should ignore the DESC argument on the # index. # do_test descidx2-2.0 { set_file_format 3 db close sqlite3 db test.db get_file_format } {3} # Put some information in the table and verify that the DESC # on the index is ignored. # do_test descidx2-2.1 { 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; } } {4 5 6} do_test descidx2-2.2 { execsql { SELECT a FROM t1 WHERE b>3 AND b<7; } } {4 5 6} do_test descidx2-2.3 { execsql { SELECT b FROM t1 WHERE a>=3 AND a<7; } } {3 4 5 6} do_test descidx2-2.4 { execsql { SELECT b FROM t1 WHERE a>3 AND a<=7; } } {4 5 6 7} do_test descidx2-2.5 { execsql { SELECT b FROM t1 WHERE a>=3 AND a<=7; } } {3 4 5 6 7} do_test descidx2-2.6 { 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 descidx2-3.1 { cksort {SELECT a FROM t1 ORDER BY a} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.2 { cksort {SELECT a FROM t1 ORDER BY a ASC} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.3 { cksort {SELECT a FROM t1 ORDER BY a DESC} } {8 7 6 5 4 3 2 1 nosort} do_test descidx2-3.4 { cksort {SELECT b FROM t1 ORDER BY a} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.5 { cksort {SELECT b FROM t1 ORDER BY a ASC} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.6 { cksort {SELECT b FROM t1 ORDER BY a DESC} } {8 7 6 5 4 3 2 1 nosort} do_test descidx2-3.7 { cksort {SELECT a FROM t1 ORDER BY b} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.8 { cksort {SELECT a FROM t1 ORDER BY b ASC} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.9 { cksort {SELECT a FROM t1 ORDER BY b DESC} } {8 7 6 5 4 3 2 1 nosort} do_test descidx2-3.10 { cksort {SELECT b FROM t1 ORDER BY b} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.11 { cksort {SELECT b FROM t1 ORDER BY b ASC} } {1 2 3 4 5 6 7 8 nosort} do_test descidx2-3.12 { cksort {SELECT b FROM t1 ORDER BY b DESC} } {8 7 6 5 4 3 2 1 nosort} do_test descidx2-3.21 { cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a} } {4 5 6 7 nosort} do_test descidx2-3.22 { cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC} } {4 5 6 7 nosort} do_test descidx2-3.23 { cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC} } {7 6 5 4 nosort} do_test descidx2-3.24 { cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a} } {4 5 6 7 nosort} do_test descidx2-3.25 { cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC} } {4 5 6 7 nosort} do_test descidx2-3.26 { cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC} } {7 6 5 4 nosort} finish_test