sqlite迁移到mysql脚本的方法_Mysql

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 = "\`$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";

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