NAME

datagen_from_ddl - Dummy data generator from DDL statements

SYNOPSIS

    $ datagen_from_ddl [options] your_ddl.sql
    $ datagen_from_ddl --num=users:10,100 --include=users,blogs --format=sql --pretty your_ddl.sql

DESCRIPTION

datagen_from_ddl generates dummy records and output them to STDOUT in default so that it can pipe to RDBMS client.

    $ datagen_from_ddl --num=100 your_ddl.sql | mysql -u user -p DBNAME

OPTIONS

-n|--num (default: 10)

Number of records generated.

Example:

    --num=20 (20 records for all tables)
    --num=users:10,100 (10 records for users and 100 records for other tables)

-p|--parser (default: MySQL)

Parser for DDL. Parser can be 'MySQL', 'SQLite', 'Oracle', or 'PostgreSQL'.

-i|--include

Only tables specified by this option are processed.

-e|--exclude

Tables which are specified this option are ignored(--include and --exclude options are exclusively specified).

-o|--out

Output file.

-f|--format (default: SQL)

Output format. Format can be 'SQL' or 'JSON'.

--pretty

Pretty print.

--bytes_per_sql (default: 1MB)

The maximum bytes of bulk insert statement.

You can specify this option value like '64', '1MB', '10M'.

This option is releated to the MySQL's 'max_allowed_packet' variable which stands for the maximum size of string. It's recommended to suit this option for your MySQL settings.

cf. https://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html#sysvar_max_allowed_packet