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: speed4p.test,v 1.4 2008/04/10 13:32:37 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 $txt68}69 70# Summary of tests:71#72#   speed4p-join1: Join three tables using IPK index.73#   speed4p-join2: Join three tables using an index.74#   speed4p-join3: Join two tables without an index.75#76#   speed4p-view1:  Querying a view.77#   speed4p-table1: Same queries as in speed4p-view1, but run directly against78#                  the tables for comparison purposes.79#80#   speed4p-subselect1: A SELECT statement that uses many sub-queries..81#82#   speed4p-trigger1: An INSERT statement that fires a trigger.83#   speed4p-trigger2: An UPDATE statement that fires a trigger.84#   speed4p-trigger3: A DELETE statement that fires a trigger.85#   speed4p-notrigger1: Same operation as trigger1, but without the trigger.86#   speed4p-notrigger2:        "          trigger2           "87#   speed4p-notrigger3:        "          trigger3           "88#89 90# Set up the schema. Each of the tables t1, t2 and t3 contain 50,000 rows.91# This creates a database of around 16MB.92execsql {93  PRAGMA page_size=1024;94  PRAGMA cache_size=8192;95  PRAGMA locking_mode=EXCLUSIVE;96  BEGIN;97  CREATE TABLE t1(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);98  CREATE TABLE t2(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);99  CREATE TABLE t3(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);100 101  CREATE VIEW v1 AS SELECT rowid, i, t FROM t1;102  CREATE VIEW v2 AS SELECT rowid, i, t FROM t2;103  CREATE VIEW v3 AS SELECT rowid, i, t FROM t3;104}105for {set jj 1} {$jj <= 3} {incr jj} {106  set stmt [string map "%T% t$jj" {INSERT INTO %T% VALUES(NULL, $i, $t)}]107  for {set ii 0} {$ii < 50000} {incr ii} {108    set i [expr {int(rand()*50000)}]109    set t [number_name $i]110    execsql $stmt111  }112}113execsql {114  CREATE INDEX i1 ON t1(t);115  CREATE INDEX i2 ON t2(t);116  CREATE INDEX i3 ON t3(t);117  COMMIT;118}119 120# Join t1, t2, t3 on IPK.121set sql "SELECT * FROM t1, t2, t3 WHERE t1.oid = t2.oid AND t2.oid = t3.oid"122speed_trial speed4p-join1 50000 row $sql123 124# Join t1, t2, t3 on the non-IPK index.125set sql "SELECT * FROM t1, t2, t3 WHERE t1.t = t2.t AND t2.t = t3.t"126speed_trial speed4p-join2 50000 row $sql127 128# Run 10000 simple queries against the views.129set script {130  for {set ii 1} {$ii < 10000} {incr ii} {131    set v [expr {$ii*3}]132    set t [expr {$ii%3+1}]133    db eval "SELECT * FROM v$t WHERE rowid = \$v"134  }135}136speed_trial_tcl speed4p-view1 10000 stmt $script137 138# Run the same 10000 simple queries as in the previous test case against139# the underlying tables. The compiled vdbe programs should be identical, so140# the only difference in running time is the extra time taken to compile141# the view definitions.142#143set script {144  for {set ii 1} {$ii < 10000} {incr ii} {145    set v [expr {$ii*3}]146    set t [expr {$ii%3+1}]147    db eval "SELECT t FROM t$t WHERE rowid = \$v"148  }149}150speed_trial_tcl speed4p-table1 10000 stmt $script151 152# Run a SELECT that uses sub-queries 10000 times. A total of 30000 sub-selects.153#154set script {155  for {set ii 1} {$ii < 10000} {incr ii} {156    set v [expr {$ii*3}]157    db eval {158      SELECT (SELECT t FROM t1 WHERE rowid = $v), 159             (SELECT t FROM t2 WHERE rowid = $v), 160             (SELECT t FROM t3 WHERE rowid = $v)161    }162  }163}164speed_trial_tcl speed4p-subselect1 10000 stmt $script165 166# Single-row updates performance.167#168set script {169  db eval BEGIN170  for {set ii 1} {$ii < 10000} {incr ii} {171    db eval {UPDATE t1 SET i=i+1 WHERE rowid=$ii}172  }173  db eval COMMIT174}175speed_trial_tcl speed4p-rowid-update 10000 stmt $script176 177 178db eval {179   CREATE TABLE t5(t TEXT PRIMARY KEY, i INTEGER);180}181speed_trial speed4p-insert-ignore 50000 row {182  INSERT OR IGNORE INTO t5 SELECT t, i FROM t1;183}184 185set list [db eval {SELECT t FROM t5}]186set script {187  db eval BEGIN188  foreach t $::list {189    db eval {UPDATE t5 SET i=i+1 WHERE t=$t}190  }191  db eval COMMIT192}193speed_trial_tcl speed4p-unique-update [llength $list] stmt $script194 195# The following block tests the speed of some DML statements that cause196# triggers to fire.197#198execsql {199  CREATE TABLE log(op TEXT, r INTEGER, i INTEGER, t TEXT);200  CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);201  CREATE TRIGGER t4_trigger1 AFTER INSERT ON t4 BEGIN202    INSERT INTO log VALUES('INSERT INTO t4', new.rowid, new.i, new.t);203  END;204  CREATE TRIGGER t4_trigger2 AFTER UPDATE ON t4 BEGIN205    INSERT INTO log VALUES('UPDATE OF t4', new.rowid, new.i, new.t);206  END;207  CREATE TRIGGER t4_trigger3 AFTER DELETE ON t4 BEGIN208    INSERT INTO log VALUES('DELETE OF t4', old.rowid, old.i, old.t);209  END;210  BEGIN;211}212set list {}213for {set ii 1} {$ii < 10000} {incr ii} {214  lappend list $ii [number_name $ii]215}216set script {217  foreach {ii name} $::list {218    db eval {INSERT INTO t4 VALUES(NULL, $ii, $name)}219  }220}221speed_trial_tcl speed4p-trigger1 10000 stmt $script222 223set list {}224for {set ii 1} {$ii < 20000} {incr ii 2} {225  set ii2 [expr {$ii*2}]226  lappend list $ii $ii2 [number_name $ii2]227}228set script {229  foreach {ii ii2 name} $::list {230    db eval {231      UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii;232    }233  }234}235speed_trial_tcl speed4p-trigger2 10000 stmt $script236 237set script {238  for {set ii 1} {$ii < 20000} {incr ii 2} {239    db eval {DELETE FROM t4 WHERE rowid = $ii}240  }241}242speed_trial_tcl speed4p-trigger3 10000 stmt $script243execsql {COMMIT}244 245# The following block contains the same tests as the above block that246# tests triggers, with one crucial difference: no triggers are defined.247# So the difference in speed between these tests and the preceding ones248# is the amount of time taken to compile and execute the trigger programs.249#250execsql {251  DROP TABLE t4;252  DROP TABLE log;253  VACUUM;254  CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);255  BEGIN;256}257set list {}258for {set ii 1} {$ii < 10000} {incr ii} {259  lappend list $ii [number_name $ii]260}261set script {262  foreach {ii name} $::list {263    db eval {INSERT INTO t4 VALUES(NULL, $ii, $name);}264  }265}266speed_trial_tcl speed4p-notrigger1 10000 stmt $script267 268set list {}269for {set ii 1} {$ii < 20000} {incr ii 2} {270  set ii2 [expr {$ii*2}]271  lappend list $ii $ii2 [number_name $ii2]272}273set script {274  foreach {ii ii2 name} $::list {275    db eval {276      UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii;277    }278  }279}280speed_trial_tcl speed4p-notrigger2 10000 stmt $script281 282set script {283  for {set ii 1} {$ii < 20000} {incr ii 2} {284    db eval {DELETE FROM t4 WHERE rowid = $ii}285  }286}287speed_trial_tcl speed4p-notrigger3 10000 stmt $script288execsql {COMMIT}289 290speed_trial_summary speed4291finish_test292