How do I split the output from mysqldump into smaller files?

This bash script splits a dumpfile of one database into separate files for each table and names with csplit and names them accordingly:

#!/bin/bash

####
# Split MySQL dump SQL file into one file per table
# based on https://gist.github.com/jasny/1608062
####

#adjust this to your case:
START="/-- Table structure for table/"
# or 
#START="/DROP TABLE IF EXISTS/"


if [ $# -lt 1 ] || [[ $1 == "--help" ]] || [[ $1 == "-h" ]] ; then
        echo "USAGE: extract all tables:"
        echo " $0 DUMP_FILE"
        echo "extract one table:"
        echo " $0 DUMP_FILE [TABLE]"
        exit
fi

if [ $# -ge 2 ] ; then
        #extract one table $2
        csplit -s -ftable $1 "/-- Table structure for table/" "%-- Table structure for table \`$2\`%" "/-- Table structure for table/" "%40103 SET TIME_ZONE=@OLD_TIME_ZONE%1"
else
        #extract all tables
        csplit -s -ftable $1 "$START" {*}
fi
 
[ $? -eq 0 ] || exit
 
mv table00 head
 
FILE=`ls -1 table* | tail -n 1`
if [ $# -ge 2 ] ; then
        # cut off all other tables
        mv $FILE foot
else
        # cut off the end of each file
        csplit -b '%d' -s -f$FILE $FILE "/40103 SET TIME_ZONE=@OLD_TIME_ZONE/" {*}
        mv ${FILE}1 foot
fi
 
for FILE in `ls -1 table*`; do
        NAME=`head -n1 $FILE | cut -d$'\x60' -f2`
        cat head $FILE foot > "$NAME.sql"
done
 
rm head foot table*

based on https://gist.github.com/jasny/1608062
and https://stackoverflow.com/a/16840625/1069083

First dump the schema (it surely fits in 2Mb, no?)

mysqldump -d --all-databases 

and restore it.

Afterwards dump only the data in separate insert statements, so you can split the files and restore them without having to concatenate them on the remote server

mysqldump --all-databases --extended-insert=FALSE --no-create-info=TRUE

You say that you don't have access to the second server. But if you have shell access to the first server, where the tables are, you can split your dump by table:

for T in `mysql -N -B -e 'show tables from dbname'`; \
   do echo $T; \
   mysqldump [connecting_options] dbname $T \
   | gzip -c > dbname_$T.dump.gz ; \
   done

This will create a gzip file for each table.

Another way of splitting the output of mysqldump in separate files is using the --tab option.

mysqldump [connecting options] --tab=directory_name dbname 

where directory_name is the name of an empty directory. This command creates a .sql file for each table, containing the CREATE TABLE statement, and a .txt file, containing the data, to be restored using LOAD DATA INFILE. I am not sure if phpMyAdmin can handle these files with your particular restriction, though.

Late reply but was looking for same solution and came across following code from below website:

for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done

http://www.commandlinefu.com/commands/view/2916/backup-all-mysql-databases-to-individual-files

I wrote a new version of the SQLDumpSplitter, this time with a proper parser, allowing nice things like INSERTs with many values to be split over files and it is multi platform now: https://philiplb.de/sqldumpsplitter3/

You can dump individual tables with mysqldump by running mysqldump database table1 table2 ... tableN

If none of the tables are too large, that will be enough. Otherwise, you'll have to start splitting the data in the larger tables.

I wrote a Python script to split a single large sql dump file into separate files, one for each CREATE TABLE statement. It writes the files to a new folder that you specify. If no output folder is specified, it creates a new folder with the same name as the dump file, in the same directory. It works line-by-line, without writing the file to memory first, so it is great for large files.

https://github.com/kloddant/split_sql_dump_file

import sys, re, os

if sys.version_info[0] < 3:
    raise Exception("""Must be using Python 3.  Try running "C:\\Program Files (x86)\\Python37-32\\python.exe" split_sql_dump_file.py""")

sqldump_path = input("Enter the path to the sql dump file: ")

if not os.path.exists(sqldump_path):
    raise Exception("Invalid sql dump path.  {sqldump_path} does not exist.".format(sqldump_path=sqldump_path))

output_folder_path = input("Enter the path to the output folder: ") or sqldump_path.rstrip('.sql')

if not os.path.exists(output_folder_path):
    os.makedirs(output_folder_path)

table_name = None
output_file_path = None
smallfile = None

with open(sqldump_path, 'rb') as bigfile:
    for line_number, line in enumerate(bigfile):
        line_string = line.decode("utf-8")
        if 'CREATE TABLE' in line_string.upper():
            match = re.match(r"^CREATE TABLE (?:IF NOT EXISTS )?`(?P<table>\w+)` \($", line_string)
            if match:
                table_name = match.group('table')
                print(table_name)
                output_file_path = "{output_folder_path}/{table_name}.sql".format(output_folder_path=output_folder_path.rstrip('/'), table_name=table_name)
                if smallfile:
                    smallfile.close()
                smallfile = open(output_file_path, 'wb')
        if not table_name:
            continue
        smallfile.write(line)
    smallfile.close()

Try csplit(1) to cut up the output into the individual tables based on regular expressions (matching the table boundary I would think).