sqlite迁移到mysql脚本的方法

#! /usr/bin/perl## based on https://stackoverflow.com/a/87531/5742651# usage: sqlite3 .dump database_name.sqlite3 | perl sqlite2mysql.pl | mysql -u root -p $import_database_name## ignore follow lines:#  BEGIN TRANSACTION #  COMMIT #  sqlite_sequence #  CREATE UNIQUE INDEX#  PRAGMA foreign_keys=OFF# "tablename/field" => `tablename/field`# booleans 't' and 'f' => 1 and 0# AUTOINCREMENT => AUTO_INCREMENT# varchar => varchar(255)# CREATE TABLE table... => DROP TABLE table; CREATE TABLE table...# Merge insert sqls into multiple insert to speed up#  INSERT INTO table VALUES('val1');#  INSERT INTO table VALUES('val2');  => INSERT INTO table VALUES('val1'), ('val2'), ('val3');#  INSERT INTO table VALUES('val3');my $open=0;my $line_cache = '';# For speed upprint "SET GLOBAL max_allowed_packet=209715200;/n";#print "SET AUTOCOMMIT=0;/n";while ($line = <>){  if (($line !~ /PRAGMA foreign_keys=OFF/) && ($line !~ /BEGIN TRANSACTION/) && ($line !~ /COMMIT/) && ($line !~ /sqlite_sequence/) && ($line !~ /CREATE UNIQUE INDEX/)){   if ($line =~ /CREATE TABLE /"([a-z_0-9]*)/"(.*)/){   $name = "/`$1/`";   $sub = $2;   $sub =~ s/varchar([^(])/varchar(255)$1/g;   $line = "DROP TABLE IF EXISTS $name;/nCREATE TABLE $name$sub/n";    }   elsif ($line =~ /CREATE VIEW ([a-z_0-9]*)(.*)/){   $name = "/`$1/`";   $sub = $2;   $line = "DROP VIEW IF EXISTS $name;/nCREATE VIEW $name$sub/n";   }   elsif ($line =~ /INSERT INTO /"([a-z_]*)/" VALUES(.*);/){        if ($open == 0) {          $open = 1;       $line_cache .= "INSERT INTO /`$1/` VALUES $2";        } else {          $line_cache .= ", $2";        }        next;   }else{   $line =~ s//'/'////'/g;   }    if ($open == 1) {       $open = 0;       $line = $line_cache.";/n".$line;       $line_cache = '';    }   $line =~ s//"/`/g;   $line =~ s/([^//'])/'t/'(.)/$1THIS_IS_TRUE$2/g;   $line =~ s/THIS_IS_TRUE/1/g;   $line =~ s/([^//'])/'f/'(.)/$1THIS_IS_FALSE$2/g;   $line =~ s/THIS_IS_FALSE/0/g;   $line =~ s/AUTOINCREMENT/AUTO_INCREMENT/g;   print $line;  }}#print "SET AUTOCOMMIT=1;/n";