mirror of https://github.com/sqlite/sqlite
81 lines
2.4 KiB
Plaintext
81 lines
2.4 KiB
Plaintext
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# 2001 September 15
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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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: select1.test,v 1.70 2009/05/28 01:00:56 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set ::testprefix fordelete
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# This function returns a list of the tables or indexes opened with
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# OP_OpenWrite instructions when the SQL statement passed as the only
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# argument is executed. If the OPFLAG_FORDELETE flag is specified on
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# the OP_OpenWrite, an asterix is appended to the object name. The list
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# is sorted in [lsort] order before it is returned.
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#
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proc analyze_delete_program {sql} {
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# Build a map from root page to table/index name.
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db eval {
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SELECT name, rootpage FROM sqlite_master
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} {
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set T($rootpage) $name
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}
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# Calculate the results.
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set res [list]
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db eval "EXPLAIN $sql" R {
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if {$R(opcode) == "OpenWrite"} {
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set obj $T($R(p2))
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if {"0x$R(p5)" & 0x08} { append obj *}
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lappend res $obj
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}
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}
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lsort $res
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}
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proc do_adp_test {tn sql res} {
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uplevel [list do_test $tn [list analyze_delete_program $sql] [list {*}$res]]
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}
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do_execsql_test 1.0 {
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CREATE TABLE t1(a PRIMARY KEY, b);
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}
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foreach {tn sql res} {
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1 { DELETE FROM t1 WHERE a=?} { sqlite_autoindex_t1_1 t1* }
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2 { DELETE FROM t1 WHERE a=? AND b=? } { sqlite_autoindex_t1_1 t1 }
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3 { DELETE FROM t1 WHERE a>? } { sqlite_autoindex_t1_1 t1* }
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4 { DELETE FROM t1 WHERE rowid=? } { sqlite_autoindex_t1_1* t1 }
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} {
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do_adp_test 1.$tn $sql $res
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}
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do_execsql_test 2.0 {
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CREATE TABLE t2(a, b, c);
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CREATE INDEX t2a ON t2(a);
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CREATE INDEX t2b ON t2(b);
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CREATE INDEX t2c ON t2(c);
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}
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foreach {tn sql res} {
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1 { DELETE FROM t2 WHERE a=?} { t2* t2a t2b* t2c* }
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2 { DELETE FROM t2 WHERE a=? AND +b=?} { t2 t2a t2b* t2c* }
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3 { DELETE FROM t2 WHERE a=? OR b=?} { t2 t2a* t2b* t2c* }
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4 { DELETE FROM t2 WHERE +a=? } { t2 t2a* t2b* t2c* }
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5 { DELETE FROM t2 WHERE rowid=? } { t2 t2a* t2b* t2c* }
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} {
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do_adp_test 2.$tn $sql $res
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}
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finish_test
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