我有多个数据库的mysqldump文件(5)。其中一个数据库需要很长时间才能加载,是否可以通过数据库拆分mysqldump文件,或者只是告诉mysql仅加载指定的数据库之一?
曼尼什
最佳答案
这个Perl脚本应该可以解决问题。
#!/usr/bin/perl -w
#
# splitmysqldump - split mysqldump file into per-database dump files.
use strict;
use warnings;
my $dbfile;
my $dbname = q{};
my $header = q{};
while (<>) {
# Beginning of a new database section:
# close currently open file and start a new one
if (m/-- Current Database\: \`([-\w]+)\`/) {
if (defined $dbfile && tell $dbfile != -1) {
close $dbfile or die "Could not close file!"
}
$dbname = $1;
open $dbfile, ">>", "$1_dump.sql" or die "Could not create file!";
print $dbfile $header;
print "Writing file $1_dump.sql ...\n";
}
if (defined $dbfile && tell $dbfile != -1) {
print $dbfile $_;
}
# Catch dump file header in the beginning
# to be printed to each separate dump file.
if (! $dbname) { $header .= $_; }
}
close $dbfile or die "Could not close file!"
对包含所有数据库的转储文件运行此命令
./splitmysqldump < all_databases.sql