The mysqldump command in MySQL is used to create backups of MySQL databases, allowing for easy restoration or transfer of data. One useful option is -a or --create-options, which includes MySQL-specific create options in the dump file. This option is particularly handy when you need to ensure that all the original options used when creating database objects (tables, views, procedures, etc.) are preserved in the dump file.
Here are some examples demonstrating how to use mysqldump with the --create-options option:
Example 1: Dumping a single database with create options:
mysqldump -a -uroot -p mydatabase > mydatabase_dump.sql
This command dumps the database mydatabase with all MySQL-specific create options included in the dump file mydatabase_dump.sql.
Verification: You can verify the dump file by opening it with a text editor and checking for MySQL-specific create options in the SQL statements.
Example 2: Dumping all databases with create options:
mysqldump -a -uroot -p --all-databases > alldatabases_dump.sql
This command dumps all databases on the MySQL server with their respective MySQL-specific create options into the file alldatabases_dump.sql.
Verification: Open the dump file and inspect the create statements for various databases to confirm the options are included.
Example 3: Dumping only table structures with create options:
mysqldump -a -uroot -p --no-data mydatabase > mydatabase_structure.sql
Here, only the table structures (without data) of mydatabase are dumped with MySQL-specific create options preserved in mydatabase_structure.sql.
Verification: Check the dump file to see that it contains table creation statements with their respective options but lacks data inserts.
Example 4: Dumping a specific table with create options:
mysqldump -a -uroot -p mydatabase mytable > mytable_dump.sql
This command dumps only the table mytable from mydatabase with MySQL-specific create options included in mytable_dump.sql.
Verification: Review the dump file to ensure that the create statement for mytable includes the necessary options.
Example 5: Dumping with extended insert and create options:
mysqldump -a -uroot -p --extended-insert mydatabase > mydatabase_extended.sql
This command dumps mydatabase using extended insert statements and includes MySQL-specific create options in mydatabase_extended.sql.
Verification: Examine the dump file to confirm extended insert syntax and verify the create options are retained.
Example 6: Dumping with complete insert and create options:
mysqldump -a -uroot -p --complete-insert mydatabase > mydatabase_complete.sql
This command dumps mydatabase using complete insert statements and ensures MySQL-specific create options are saved in mydatabase_complete.sql.
Verification: Open the dump file and inspect the insert statements to see if they are complete and if create options are included.
Example 7: Dumping with lock tables and create options:
mysqldump -a -uroot -p --lock-tables mydatabase > mydatabase_locked.sql
Here, mydatabase is dumped with table locking during the process and MySQL-specific create options are maintained in mydatabase_locked.sql.
Verification: Check the dump file to ensure that table locking commands are present and that create options are correctly included.
Example 8: Dumping with triggers and create options:
mysqldump -a -uroot -p --triggers mydatabase > mydatabase_triggers.sql
This command dumps mydatabase including triggers and MySQL-specific create options into mydatabase_triggers.sql.
Verification: Examine the dump file for trigger definitions and confirm that create options are retained within the trigger statements.
Example 9: Dumping stored procedures with create options:
mysqldump -a -uroot -p --routines mydatabase > mydatabase_routines.sql
This command dumps mydatabase along with stored procedures and MySQL-specific create options in mydatabase_routines.sql.
Verification: Review the dump file for stored procedure definitions and ensure that create options are present in the procedure creation statements.
Example 10: Dumping with no create options:
mysqldump -a -uroot -p --skip-create-options mydatabase > mydatabase_nooptions.sql
Here, mydatabase is dumped without MySQL-specific create options, resulting in a dump file mydatabase_nooptions.sql without those options.
Verification: Open the dump file and check that create options are indeed omitted from the SQL statements.
Read Also
Using Compression in mysqldump Output
Using Complete INSERT Statements in mysqldump
Generating Compact Output in mysqldump
Setting MySQL Dump Compatibility Mode
Including Comments in mysqldump Output
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