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# 2005 August 24
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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 script is a test of the DELETE command where a
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# large number of rows are deleted.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Create a table that contains a large number of rows.
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#
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do_test delete3-1.1 {
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execsql {
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CREATE TABLE t1(x integer primary key);
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BEGIN;
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INSERT INTO t1 VALUES(1);
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INSERT INTO t1 VALUES(2);
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INSERT INTO t1 SELECT x+2 FROM t1;
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INSERT INTO t1 SELECT x+4 FROM t1;
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INSERT INTO t1 SELECT x+8 FROM t1;
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INSERT INTO t1 SELECT x+16 FROM t1;
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INSERT INTO t1 SELECT x+32 FROM t1;
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INSERT INTO t1 SELECT x+64 FROM t1;
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INSERT INTO t1 SELECT x+128 FROM t1;
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INSERT INTO t1 SELECT x+256 FROM t1;
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INSERT INTO t1 SELECT x+512 FROM t1;
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INSERT INTO t1 SELECT x+1024 FROM t1;
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INSERT INTO t1 SELECT x+2048 FROM t1;
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INSERT INTO t1 SELECT x+4096 FROM t1;
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INSERT INTO t1 SELECT x+8192 FROM t1;
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INSERT INTO t1 SELECT x+16384 FROM t1;
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INSERT INTO t1 SELECT x+32768 FROM t1;
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INSERT INTO t1 SELECT x+65536 FROM t1;
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INSERT INTO t1 SELECT x+131072 FROM t1;
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INSERT INTO t1 SELECT x+262144 FROM t1;
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COMMIT;
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SELECT count(*) FROM t1;
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}
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} {524288}
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do_test delete3-1.2 {
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execsql {
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DELETE FROM t1 WHERE x%2==0;
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SELECT count(*) FROM t1;
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}
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} {262144}
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integrity_check delete3-1.3
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finish_test
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