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28 Οκτ 2015 · ALTER TABLE old_table_name. RENAME TO new_table_name; all the existing constraints (foreign key and other constraints) and triggers will reference the newly renamed object.
Purpose. Use the ALTER TABLE statement to alter the definition of a nonpartitioned table, a partitioned table, a table partition, or a table subpartition. For object tables or relational tables with object columns, use ALTER TABLE to convert the table to the latest definition of its referenced type after the type has been altered. Note:
Created Monday October 05, 2015. Statement 1. This example creates the admin_emp table in the current schema and modifies the table in various ways. The empno column is the primary key in this table. The primary key is the column or set of columns that uniquely identifies a row in a table. Only one primary key can be defined for each table.
To change the data type of a column in a table, use the following syntax: SQL Server / MS Access: ALTER TABLE table_name. ALTER COLUMN column_name datatype; My SQL / Oracle (prior version 10G): ALTER TABLE table_name. MODIFY COLUMN column_name datatype; Oracle 10G and later: ALTER TABLE table_name.
2 Σεπ 2019 · To rename a table in Oracle, it’s quite similar to other databases: ALTER TABLE table_name RENAME TO new_table_name; Note that after you rename the table, all foreign key that references to the old table name will be invalid, so are the views, stored procedures, function, and synonyms.
To rename a table, you use the following Oracle RENAME table statement as follows: RENAME table_name TO new_name; Code language: SQL (Structured Query Language) (sql) In the RENAME table statement: First, specify the name of the existing table which you want to rename. Second, specify the new table name.
This Oracle tutorial explains how to use the Oracle ALTER TABLE statement to add a column, modify a column, drop a column, rename a column or rename a table (with syntax, examples and practice exercises).
