To remove a constraint, use theDROP CONSTRAINTclause in theALTER TABLEstatement. If you wish to drop the unique constraint on the “Email” column: <br> ALTER TABLE Customers<br> DROP CONSTRAINT UQ_Email;<br> 4. Renaming Tables TheALTERcommand allows you to rename a table easily. Suppose ...
The insert statement adds a new row or rows in a table in theOracle database. We generally use it after we have created a table in the database. One important point to remember is that while inserting records into a table, we must provide a value for every NOT NULL value. Let us lo...
Oracle SQL Rename Table To rename a table inOracle SQL, use the ALTER TABLE statement, in the same way as MySQL and PostgreSQL: ALTERTABLEold_nameRENAMETOnew_name; You simply add in your current table name and the new table name and run the command. There’s no need to specify the sc...
/opt/oracle/oradata/yangdb_test/users01.dbf OFFLINE /opt/oracle/oradata/yangdb_test/example01.dbf ONLINE 5 重命名数据文件,此步骤将修改控制文件里的相关信息 SYS@yangdb-rac3> alter database rename file '/opt/oracle/oradata/yangdb_test/users01.dbf' to '/opt/oracle/oradata/yangdb/users01...
on the other hand, why I alter system generated constraint name, but the constraint still works...however, the oracle book said we cannot use alter table ...rename constraint to rename system generated constraint.SOLUTION johnsone🇺🇸 2009/6/09 membership Create a free account to see thi...
how can i rename the my c# project ? How can I restore the main window after minimize the main window? Thanks! How can I right align a progress bar placed on a status bar? How can I run an embedded exe in C# Windows Forms Applications? How can I save the EventLog as *.evtx file...
In this tutorial, you will learn how to use the Oracle GRANT ALL PRIVILEGES statement to grant all privileges to a user.
how to dynamically rename the table in the db? How to eliminate NULL values from case statement? How to execute a batch file / cmd file from t-sql how to execute a long (11000 characters) dynamic query using sp_executesql how to execute alter statement which truncate data How to execute...
After installation of SAP system or in support phase, the requirement comes to change the oracle listener port number or even some time it is needed to rename the LISTENER to LISTENER_SID or something. Lets first see how to change listener port. ...
Elizabeth Ayer is the Product Manager for SQL Source Control with Redgate, where she previously worked on .NET and Exchange tools. In addition to her day job, she now writes and speaks on Continuous Delivery and Database Lifecycle Management. Before turning to product...