AryaWu/sqlite

1# 2007 October 232#3# The author disclaims copyright to this source code.  In place of4# 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.  The12# focus of this script is measuring executing speed. More specifically,13# the focus is on the speed of:14#15#   * joins16#   * views17#   * sub-selects18#   * triggers19#20# $Id: speed4.test,v 1.2 2008/07/12 14:52:20 drh Exp $21#22 23set testdir [file dirname $argv0]24source $testdir/tester.tcl25speed_trial_init speed126 27# Set a uniform random seed28expr srand(0)29 30set sqlout [open speed1.txt w]31proc tracesql {sql} {32  puts $::sqlout $sql\;33}34#db trace tracesql35 36# The number_name procedure below converts its argment (an integer)37# into a string which is the English-language name for that number.38#39# Example:40#41#     puts [number_name 123]   ->  "one hundred twenty three"42#43set ones {zero one two three four five six seven eight nine44          ten eleven twelve thirteen fourteen fifteen sixteen seventeen45          eighteen nineteen}46set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety}47proc number_name {n} {48  if {$n>=1000} {49    set txt "[number_name [expr {$n/1000}]] thousand"50    set n [expr {$n%1000}]51  } else {52    set txt {}53  }54  if {$n>=100} {55    append txt " [lindex $::ones [expr {$n/100}]] hundred"56    set n [expr {$n%100}]57  }58  if {$n>=20} {59    append txt " [lindex $::tens [expr {$n/10}]]"60    set n [expr {$n%10}]61  }62  if {$n>0} {63    append txt " [lindex $::ones $n]"64  }65  set txt [string trim $txt]66  if {$txt==""} {set txt zero}67  return $txt68}69 70# Summary of tests:71#72#   speed4-join1: Join three tables using IPK index.73#   speed4-join2: Join three tables using an index.74#   speed4-join3: Join two tables without an index.75#76#   speed4-view1:  Querying a view.77#   speed4-table1: Same queries as in speed4-view1, but run directly against78#                  the tables for comparison purposes.79#80#   speed4-subselect1: A SELECT statement that uses many sub-queries..81#82#   speed4-trigger1: An INSERT statement that fires a trigger.83#   speed4-trigger2: An UPDATE statement that fires a trigger.84#   speed4-trigger3: A DELETE statement that fires a trigger.85#   speed4-notrigger1: Same operation as trigger1, but without the trigger.86#   speed4-notrigger2:        "          trigger2           "87#   speed4-notrigger3:        "          trigger3           "88#89 90# Set up the schema. Each of the tables t1, t2 and t3 contain 50,000 rows.91# This creates a database of around 16MB.92execsql {93  BEGIN;94  CREATE TABLE t1(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);95  CREATE TABLE t2(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);96  CREATE TABLE t3(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);97 98  CREATE VIEW v1 AS SELECT rowid, i, t FROM t1;99  CREATE VIEW v2 AS SELECT rowid, i, t FROM t2;100  CREATE VIEW v3 AS SELECT rowid, i, t FROM t3;101}102for {set jj 1} {$jj <= 3} {incr jj} {103  set stmt [string map "%T% t$jj" {INSERT INTO %T% VALUES(NULL, $i, $t)}]104  for {set ii 0} {$ii < 50000} {incr ii} {105    set i [expr {int(rand()*50000)}]106    set t [number_name $i]107    execsql $stmt108  }109}110execsql {111  CREATE INDEX i1 ON t1(t);112  CREATE INDEX i2 ON t2(t);113  CREATE INDEX i3 ON t3(t);114  COMMIT;115}116 117# Before running these tests, disable the compiled statement cache built into118# the Tcl interface. This is because we want to test the speed of SQL119# compilation as well as execution.120#121db cache size 0122 123# Join t1, t2, t3 on IPK.124set sql "SELECT * FROM t1, t2, t3 WHERE t1.oid = t2.oid AND t2.oid = t3.oid"125speed_trial speed4-join1 50000 row $sql126 127# Join t1, t2, t3 on the non-IPK index.128set sql "SELECT * FROM t1, t2, t3 WHERE t1.t = t2.t AND t2.t = t3.t"129speed_trial speed4-join2 50000 row $sql130 131# Run 10000 simple queries against the views.132set sql ""133for {set ii 1} {$ii < 10000} {incr ii} {134  append sql "SELECT * FROM v[expr {($ii%3)+1}] WHERE rowid = [expr {$ii*3}];"135}136speed_trial speed4-view1 10000 stmt $sql137 138# Run the same 10000 simple queries as in the previous test case against139# the underlying tables. The compiled vdbe programs should be identical, so140# the only difference in running time is the extra time taken to compile141# the view definitions.142#143set sql ""144for {set ii 1} {$ii < 10000} {incr ii} {145  append sql "SELECT t FROM t[expr {($ii%3)+1}] WHERE rowid = [expr {$ii*3}];"146}147speed_trial speed4-table1 10000 stmt $sql148 149# Run a SELECT that uses sub-queries 10000 times. A total of 30000 sub-selects.150#151set sql ""152for {set ii 1} {$ii < 10000} {incr ii} {153  append sql "154    SELECT (SELECT t FROM t1 WHERE rowid = [expr {$ii*3}]), 155           (SELECT t FROM t2 WHERE rowid = [expr {$ii*3}]), 156           (SELECT t FROM t3 WHERE rowid = [expr {$ii*3}])157  ;"158}159speed_trial speed4-subselect1 10000 stmt $sql160 161# The following block tests the speed of some DML statements that cause162# triggers to fire.163#164execsql {165  CREATE TABLE log(op TEXT, r INTEGER, i INTEGER, t TEXT);166  CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);167  CREATE TRIGGER t4_trigger1 AFTER INSERT ON t4 BEGIN168    INSERT INTO log VALUES('INSERT INTO t4', new.rowid, new.i, new.t);169  END;170  CREATE TRIGGER t4_trigger2 AFTER UPDATE ON t4 BEGIN171    INSERT INTO log VALUES('UPDATE OF t4', new.rowid, new.i, new.t);172  END;173  CREATE TRIGGER t4_trigger3 AFTER DELETE ON t4 BEGIN174    INSERT INTO log VALUES('DELETE OF t4', old.rowid, old.i, old.t);175  END;176  BEGIN;177}178set sql ""179for {set ii 1} {$ii < 10000} {incr ii} {180  append sql "INSERT INTO t4 VALUES(NULL, $ii, '[number_name $ii]');"181}182speed_trial speed4-trigger1 10000 stmt $sql183set sql ""184for {set ii 1} {$ii < 20000} {incr ii 2} {185  set ii2 [expr {$ii*2}]186  append sql "187    UPDATE t4 SET i = $ii2, t = '[number_name $ii2]' WHERE rowid = $ii;188  "189}190speed_trial speed4-trigger2 10000 stmt $sql191set sql ""192for {set ii 1} {$ii < 20000} {incr ii 2} {193  append sql "DELETE FROM t4 WHERE rowid = $ii;"194}195speed_trial speed4-trigger3 10000 stmt $sql196execsql {COMMIT}197 198# The following block contains the same tests as the above block that199# tests triggers, with one crucial difference: no triggers are defined.200# So the difference in speed between these tests and the preceding ones201# is the amount of time taken to compile and execute the trigger programs.202#203execsql {204  DROP TABLE t4;205  DROP TABLE log;206  VACUUM;207  CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);208  BEGIN;209}210set sql ""211for {set ii 1} {$ii < 10000} {incr ii} {212  append sql "INSERT INTO t4 VALUES(NULL, $ii, '[number_name $ii]');"213}214speed_trial speed4-notrigger1 10000 stmt $sql215set sql ""216for {set ii 1} {$ii < 20000} {incr ii 2} {217  set ii2 [expr {$ii*2}]218  append sql "219    UPDATE t4 SET i = $ii2, t = '[number_name $ii2]' WHERE rowid = $ii;220  "221}222speed_trial speed4-notrigger2 10000 stmt $sql223set sql ""224for {set ii 1} {$ii < 20000} {incr ii 2} {225  append sql "DELETE FROM t4 WHERE rowid = $ii;"226}227speed_trial speed4-notrigger3 10000 stmt $sql228execsql {COMMIT}229 230speed_trial_summary speed4231finish_test232