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| 1 # 2005 August 24 |
| 2 # |
| 3 # The author disclaims copyright to this source code. In place of |
| 4 # a legal notice, here is a blessing: |
| 5 # |
| 6 # May you do good and not evil. |
| 7 # May you find forgiveness for yourself and forgive others. |
| 8 # May you share freely, never taking more than you give. |
| 9 # |
| 10 #*********************************************************************** |
| 11 # This file implements regression tests for SQLite library. The |
| 12 # focus of this script is a test of the DELETE command where a |
| 13 # large number of rows are deleted. |
| 14 # |
| 15 |
| 16 set testdir [file dirname $argv0] |
| 17 source $testdir/tester.tcl |
| 18 |
| 19 # Create a table that contains a large number of rows. |
| 20 # |
| 21 do_test delete3-1.1 { |
| 22 execsql { |
| 23 CREATE TABLE t1(x integer primary key); |
| 24 BEGIN; |
| 25 INSERT INTO t1 VALUES(1); |
| 26 INSERT INTO t1 VALUES(2); |
| 27 INSERT INTO t1 SELECT x+2 FROM t1; |
| 28 INSERT INTO t1 SELECT x+4 FROM t1; |
| 29 INSERT INTO t1 SELECT x+8 FROM t1; |
| 30 INSERT INTO t1 SELECT x+16 FROM t1; |
| 31 INSERT INTO t1 SELECT x+32 FROM t1; |
| 32 INSERT INTO t1 SELECT x+64 FROM t1; |
| 33 INSERT INTO t1 SELECT x+128 FROM t1; |
| 34 INSERT INTO t1 SELECT x+256 FROM t1; |
| 35 INSERT INTO t1 SELECT x+512 FROM t1; |
| 36 INSERT INTO t1 SELECT x+1024 FROM t1; |
| 37 INSERT INTO t1 SELECT x+2048 FROM t1; |
| 38 INSERT INTO t1 SELECT x+4096 FROM t1; |
| 39 INSERT INTO t1 SELECT x+8192 FROM t1; |
| 40 INSERT INTO t1 SELECT x+16384 FROM t1; |
| 41 INSERT INTO t1 SELECT x+32768 FROM t1; |
| 42 INSERT INTO t1 SELECT x+65536 FROM t1; |
| 43 INSERT INTO t1 SELECT x+131072 FROM t1; |
| 44 INSERT INTO t1 SELECT x+262144 FROM t1; |
| 45 COMMIT; |
| 46 SELECT count(*) FROM t1; |
| 47 } |
| 48 } {524288} |
| 49 do_test delete3-1.2 { |
| 50 execsql { |
| 51 DELETE FROM t1 WHERE x%2==0; |
| 52 SELECT count(*) FROM t1; |
| 53 } |
| 54 } {262144} |
| 55 integrity_check delete3-1.3 |
| 56 |
| 57 finish_test |
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