SQLite

**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle INSERT statements in SQLite.
**
** $Id: insert.c,v 1.177 2007/03/27 12:04:05 drh Exp $
*/
#include "sqliteInt.h"

/*
** Set P3 of the most recently inserted opcode to a column affinity
** string for index pIdx. A column affinity string has one character
** for each column in the table, according to the affinity of the column:

    VdbeComment((v, "# %s", pIdx->zName));
    sqlite3VdbeOp3(v, op, i+base, pIdx->tnum, (char*)pKey, P3_KEYINFO_HANDOFF);
  }
  if( pParse->nTab<=base+i ){
    pParse->nTab = base+i;
  }
}


#ifdef SQLITE_TEST
/*
** The following global variable is incremented whenever the
** transfer optimization is used.  This is used for testing
** purposes only - to make sure the transfer optimization really
** is happening when it is suppose to.
*/
int sqlite3_xferopt_count;
#endif /* SQLITE_TEST */


#ifndef SQLITE_OMIT_XFER_OPT
/*
** Check to collation names to see if they are compatible.
*/
static int xferCompatibleCollation(const char *z1, const char *z2){
  if( z1==0 ){

    }
  }

  /* If no test above fails then the indices must be compatible */
  return 1;
}











/*
** Attempt the transfer optimization on INSERTs of the form
**
**     INSERT INTO tab1 SELECT * FROM tab2;
**
** This optimization is only attempted if
**

# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file runs all tests.
#
# $Id: all.test,v 1.38 2007/03/27 12:04:06 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
rename finish_test really_finish_test
proc finish_test {} {memleak_check}

if {[file exists ./sqlite_test_count]} {

  crash.test
  crash2.test
  autovacuum_crash.test
  quick.test
  malloc.test
  misuse.test
  memleak.test

}

# Files to include in the test.  If this list is empty then everything
# that is not in the EXCLUDE list is run.
#
set INCLUDE {
}

# 2006 November 23
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is measuring executing speed.
#
# $Id: speed2.test,v 1.3 2007/03/27 12:04:06 drh Exp $
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Set a uniform random seed
expr srand(0)

set sqlout [open speed2.txt w]
proc tracesql {sql} {
  puts $::sqlout $sql\;
}
#db trace tracesql

# The number_name procedure below converts its argment (an integer)
# into a string which is the English-language name for that number.

  set txt [string trim $txt]
  if {$txt==""} {set txt zero}
  return $txt
}

# Create a database schema.
#
do_test speed2-1.0 {
  execsql {
    PRAGMA page_size=1024;
    PRAGMA cache_size=8192;
    PRAGMA locking_mode=EXCLUSIVE;
    CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
    CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT);
    CREATE INDEX i2a ON t2(a);

#
set sql {}
for {set i 1} {$i<=50000} {incr i} {
  set r [expr {int(rand()*500000)}]
  append sql "INSERT INTO t1 VALUES($i,$r,'[number_name $r]');\n"
}
db eval BEGIN
speed_trial speed2-insert1 50000 row $sql
db eval COMMIT

# 50000 INSERTs on an indexed table
#
set sql {}
for {set i 1} {$i<=50000} {incr i} {
  set r [expr {int(rand()*500000)}]
  append sql "INSERT INTO t2 VALUES($i,$r,'[number_name $r]');\n"
}
db eval BEGIN
speed_trial speed2-insert2 50000 row $sql
db eval COMMIT



# 50 SELECTs on an integer comparison.  There is no index so
# a full table scan is required.
#
set sql {}
for {set i 0} {$i<50} {incr i} {
  set lwr [expr {$i*100}]
  set upr [expr {($i+10)*100}]
  append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;"
}
speed_trial speed2-select1 [expr {50*50000}] row $sql

# 50 SELECTs on an LIKE comparison.  There is no index so a full
# table scan is required.
#
set sql {}
for {set i 0} {$i<50} {incr i} {
  append sql \
    "SELECT count(*), avg(b) FROM t1 WHERE c LIKE '%[number_name $i]%';"
}
speed_trial speed2-select2 [expr {50*50000}] row $sql

# Create indices
#
db eval BEGIN
speed_trial speed2-createidx 150000 row {
  CREATE INDEX i1a ON t1(a);
  CREATE INDEX i1b ON t1(b);
  CREATE INDEX i1c ON t1(c);
}
db eval COMMIT

# 5000 SELECTs on an integer comparison where the integer is
# indexed.
#
set sql {}
for {set i 0} {$i<5000} {incr i} {
  set lwr [expr {$i*100}]
  set upr [expr {($i+10)*100}]
  append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;"
}
speed_trial speed2-select3 5000 stmt $sql

# 100000 random SELECTs against rowid.
#
set sql {}
for {set i 1} {$i<=100000} {incr i} {
  set id [expr {int(rand()*50000)+1}]
  append sql "SELECT c=='hi' FROM t1 WHERE rowid=$id;\n"
}
speed_trial speed2-select4 100000 row $sql

# 100000 random SELECTs against a unique indexed column.
#
set sql {}
for {set i 1} {$i<=100000} {incr i} {
  set id [expr {int(rand()*50000)+1}]
  append sql "SELECT c FROM t1 WHERE a=$id;"
}
speed_trial speed2-select5 100000 row $sql

# 50000 random SELECTs against an indexed column text column
#
set sql {}
db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000} {
  append sql "SELECT c FROM t1 WHERE c='$c';"
}
speed_trial speed2-select6 50000 row $sql

# Vacuum
speed_trial speed2-vacuum 100000 row VACUUM

# 5000 updates of ranges where the field being compared is indexed.
#
set sql {}
for {set i 0} {$i<5000} {incr i} {
  set lwr [expr {$i*2}]
  set upr [expr {($i+1)*2}]
  append sql "UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr;"
}
db eval BEGIN
speed_trial speed2-update1 5000 stmt $sql
db eval COMMIT

# 50000 single-row updates.  An index is used to find the row quickly.
#
set sql {}
for {set i 0} {$i<50000} {incr i} {
  set r [expr {int(rand()*500000)}]
  append sql "UPDATE t1 SET b=$r WHERE a=$i;"
}
db eval BEGIN
speed_trial speed2-update2 50000 row $sql
db eval COMMIT

# 1 big text update that touches every row in the table.
#
speed_trial speed2-update3 50000 row {
  UPDATE t1 SET c=a;
}

# Many individual text updates.  Each row in the table is
# touched through an index.
#
set sql {}
for {set i 1} {$i<=50000} {incr i} {
  set r [expr {int(rand()*500000)}]
  append sql "UPDATE t1 SET c='[number_name $r]' WHERE a=$i;"
}
db eval BEGIN
speed_trial speed2-update4 50000 row $sql
db eval COMMIT

# Delete all content in a table.
#
speed_trial speed2-delete1 50000 row {DELETE FROM t1}

# Copy one table into another
#
speed_trial speed2-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2}

# Delete all content in a table, one row at a time.
#
speed_trial speed2-delete2 50000 row {DELETE FROM t1 WHERE 1}

# Refill the table yet again
#
speed_trial speed2-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2}

# Drop the table and recreate it without its indices.
#
db eval BEGIN
speed_trial speed2-drop1 50000 row {
   DROP TABLE t1;
   CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
}
db eval COMMIT

# Refill the table yet again.  This copy should be faster because
# there are no indices to deal with.
#
speed_trial speed2-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2}

# Select 20000 rows from the table at random.
#
speed_trial speed2-random1 50000 row {
  SELECT rowid FROM t1 ORDER BY random() LIMIT 20000
}

# Delete 20000 random rows from the table.
#
speed_trial speed2-random-del1 20000 row {
  DELETE FROM t1 WHERE rowid IN
    (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
}
do_test speed2-1.1 {
  db one {SELECT count(*) FROM t1}
} 30000

    
# Delete 20000 more rows at random from the table.
#
speed_trial speed2-random-del2 20000 row {
  DELETE FROM t1 WHERE rowid IN
    (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
}
do_test speed2-1.2 {
  db one {SELECT count(*) FROM t1}
} 10000

finish_test

#!/usr/bin/tclsh
#
# To build a single huge source file holding all of SQLite (or at
# least the core components - the test harness, shell, and TCL 
# interface are omitted.) first do
#
#      make target_source
#
# Then run this script
#
#      tclsh mkonebigsourcefile.tcl
#
# The combined SQLite source code will be written into sqlite3.c
#

# Open the output file and write a header comment at the beginning
# of the file.
#
set out [open sqlite3.c w]
puts $out \
"/******************************************************************************
** This file is a amalgamation of many separate source files from SQLite.  By
** pulling all the source files into this single unified source file, the
** entire code can be compiled as a single translation unit, which allows the
** compiler to do a better job of optimizing.
*/"

# These are the header files used by SQLite.  The first time any of these 
# files are seen in a #include statement in the C code, include the complete
# text of the file in-line.  The file only needs to be included once.
#
foreach hdr {
   btree.h
   hash.h
   keywordhash.h
   opcodes.h
   os_common.h
   os.h
   os_os2.h
   pager.h
   parse.h
   sqlite3ext.h
   sqlite3.h
   sqliteInt.h
   vdbe.h
   vdbeInt.h
} {
  set available_hdr($hdr) 1
}

# 78 stars used for comment formatting.
set s78 \
{*****************************************************************************}

# Insert a comment into the code
#
proc section_comment {text} {
  global out s78
  set n [string length $text]
  set nstar [expr {60 - $n}]
  set stars [string range $s78 0 $nstar]
  puts $out "/************** $text $stars/"
}

# Read the source file named $filename and write it into the
# sqlite3.c output file.  If any #include statements are seen,
# process them approprately.
#
proc copy_file {filename} {
  global seen_hdr available_hdr out
  set tail [file tail $filename]
  section_comment "Begin file $tail"
  set in [open $filename r]
  while {![eof $in]} {
    set line [gets $in]
    if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} {
      if {[info exists available_hdr($hdr)]} {
        if {$available_hdr($hdr)} {
          if {$hdr!="os_common.h"} {
            set available_hdr($hdr) 0
          }
          section_comment "Include $hdr in the middle of $tail"
          copy_file tsrc/$hdr
          section_comment "Continuing where we left off in $tail"
        }
      } elseif {![info exists seen_hdr($hdr)]} {
        set seen_hdr($hdr) 1
        puts $out $line
      }
    } elseif {[regexp {^#ifdef __cplusplus} $line]} {
      puts $out "#if 0"
    } elseif {[regexp {^#line} $line]} {
      # Skip #line directives.
    } else {
      puts $out $line
    }
  }
  close $in
  section_comment "End of $tail"
}


# Process the source files.  Process files containing commonly
# used subroutines first in order to help the compiler find
# inlining opportunities.
#
foreach file {
   printf.c
   random.c
   utf.c
   util.c
   hash.c
   opcodes.c

   os.c
   os_os2.c
   os_unix.c
   os_win.c

   pager.c
   
   btree.c

   vdbefifo.c
   vdbemem.c
   vdbeaux.c
   vdbeapi.c
   vdbe.c

   expr.c
   alter.c
   analyze.c
   attach.c
   auth.c
   build.c
   callback.c
   complete.c
   date.c
   delete.c
   func.c
   insert.c
   legacy.c
   loadext.c
   pragma.c
   prepare.c
   select.c
   table.c
   trigger.c
   update.c
   vacuum.c
   vtab.c
   where.c

   parse.c

   tokenize.c

   main.c
} {
  copy_file tsrc/$file
}

if 0 {
puts $out "#ifdef SQLITE_TEST"
foreach file {
   test1.c
   test2.c
   test3.c
   test4.c
   test5.c
   test6.c
   test7.c
   test8.c
   test_async.c
   test_autoext.c
   test_loadext.c
   test_md5.c
   test_schema.c
   test_server.c
   test_tclvar.c
} {
  copy_file ../sqlite/src/$file
}
puts $out "#endif /* SQLITE_TEST */"
puts $out "#ifdef SQLITE_TCL"
copy_file ../sqlite/src/tclsqlite.c
puts $out "#endif /* SQLITE_TCL */"
}

close $out