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Jun 17, 2024 · The RENAME TABLE statement in MySQL allows you to change the names of tables within a database, helping maintain organization and adaptability in data management. Syntax: RENAME TABLE old_table_name TO new_table_name [, …]; Examples of Using RENAME TABLE Renaming a Single Table
Sep 29, 2012 · Syntax The syntax to rename a table in MySQL is: ALTER TABLE table_name RENAME TO new_table_name; Example Let's look at an example that shows how to rename a table in MySQL using the ALTER TABLE statement. or example: ALTER TABLE contacts RENAME TO people;
- Table Options
- Performance and Space Requirements
- Concurrency Control
- Adding and Dropping Columns
- Renaming, Redefining, and Reordering Columns
- Primary Keys and Indexes
- Foreign Keys and Other Constraints
- Changing The Character Set
- Importing InnoDB Tables
- Row Order For MyISAM Tables
table_options signifies table options of the kind that can be used in the CREATE TABLE statement, such as ENGINE, AUTO_INCREMENT, AVG_ROW_LENGTH, MAX_ROWS, ROW_FORMAT, or TABLESPACE. For descriptions of all table options, see Section 15.1.20, “CREATE TABLE Statement”. However, ALTER TABLE ignores DATA DIRECTORY and INDEX DIRECTORY when given as tab...
ALTER TABLEoperations are processed using one of the following algorithms: For tables using the NDBstorage engine, these algorithms work as follows: See Section 25.6.12, “Online Operations with ALTER TABLE in NDB Cluster”, for more information. The ALGORITHM clause is optional. If the ALGORITHM clause is omitted, MySQL uses ALGORITHM=INSTANT for st...
For ALTER TABLE operations that support it, you can use the LOCKclause to control the level of concurrent reads and writes on a table while it is being altered. Specifying a non-default value for this clause enables you to require a certain amount of concurrent access or exclusivity during the alter operation, and halts the operation if the request...
Use ADD to add new columns to a table, and DROP to remove existing columns. DROP col_nameis a MySQL extension to standard SQL. To add a column at a specific position within a table row, use FIRST or AFTER col_name. The default is to add the column last. If a table contains only one column, the column cannot be dropped. If what you intend is to remo...
The CHANGE, MODIFY, RENAME COLUMN, and ALTERclauses enable the names and definitions of existing columns to be altered. They have these comparative characteristics: CHANGE is a MySQL extension to standard SQL. MODIFY and RENAME COLUMNare MySQL extensions for Oracle compatibility. To alter a column to change both its name and definition, use CHANGE,...
DROP PRIMARY KEY drops the primary key. If there is no primary key, an error occurs. For information about the performance characteristics of primary keys, especially for InnoDB tables, see Section 10.3.2, “Primary Key Optimization”. If the sql_require_primary_keysystem variable is enabled, attempting to drop a primary key produces an error. If you...
The FOREIGN KEY and REFERENCES clauses are supported by the InnoDB and NDB storage engines, which implement ADD [CONSTRAINT [symbol]] FOREIGN KEY [index_name] (...) REFERENCES ... (...). See Section 15.1.20.5, “FOREIGN KEY Constraints”. For other storage engines, the clauses are parsed but ignored. For ALTER TABLE, unlike CREATE TABLE, ADD FOREIGN ...
To change the table default character set and all character columns (CHAR, VARCHAR, TEXT) to a new character set, use a statement like this: The statement also changes the collation of all character columns. If you specify no COLLATEclause to indicate which collation to use, the statement uses default collation for the character set. If this collat...
An InnoDB table created in its own file-per-table tablespace can be imported from a backup or from another MySQL server instance using DISCARD TABLEPACE and IMPORT TABLESPACE clauses. See Section 17.6.1.3, “Importing InnoDB Tables”.
ORDER BYenables you to create the new table with the rows in a specific order. This option is useful primarily when you know that you query the rows in a certain order most of the time. By using this option after major changes to the table, you might be able to get higher performance. In some cases, it might make sorting easier for MySQL if the tab...
MySQL ALTER TABLE Statement. The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.
Learn how to rename one or more tables in MySQL using the RENAME TABLE statement. See the syntax, examples, privileges, and limitations of this operation.
Learn how to rename an existing table in MySQL using RENAME TABLE or ALTER TABLE statements. See syntax, examples and differences between renaming permanent and temporary tables.
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How to rename a table in MySQL?
How to rename a temporary table in MySQL?
What is alter table in MySQL?
How do I rename a table?
You can rename a table using the ALTER TABLE statement as follows: ALTER TABLE old_table_name RENAME TO new_table_name; Code language: SQL (Structured Query Language) (sql) The ALTER TABLE statement can rename a temporary table while the RENAME TABLE statement cannot. Renaming temporary table example
