sqlite迁移到mysql脚本的方法

sqlite迁移到mysql脚本的方法

废话不多说了，直接给大家贴代码了，具体代码如下所示：

#! /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 $line_cache = '';
# For speed up
print "SET GLOBAL max_allowed_packet=209715200;\n";
#print "SET AUTOCOMMIT=0;\n";
while ($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 = "\`\`";
   $sub = ;
   $sub =~ s/varchar([^(])/varchar(255)/g;
   $line = "DROP TABLE IF EXISTS $name;\nCREATE TABLE $name$sub\n"; 
   }
   elsif ($line =~ /CREATE VIEW ([a-z_0-9]*)(.*)/){
   $name = "\`\`";
   $sub = ;
   $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 \`\` VALUES ";
        } else {
          $line_cache .= ", ";
        }
        next;
   }else{
   $line =~ s/\'\'/\\'/g;
   }
    if ($open == 1) {
       $open = 0;
       $line = $line_cache.";\n".$line;
       $line_cache = '';
    }
   $line =~ s/\"/`/g;
   $line =~ s/([^\'])\'t\'(.)/THIS_IS_TRUE/g;
   $line =~ s/THIS_IS_TRUE/1/g;
   $line =~ s/([^\'])\'f\'(.)/THIS_IS_FALSE/g;
   $line =~ s/THIS_IS_FALSE/0/g;
   $line =~ s/AUTOINCREMENT/AUTO_INCREMENT/g;
   print $line;
  }
}
#print "SET AUTOCOMMIT=1;\n";

总结

以上所述是小编给大家介绍的sqlite迁移到mysql脚本的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！