Αποτελέσματα Αναζήτησης
The DROP INDEX statement allows you to drop an existing index. The syntax of the DROP INDEX statement is as simple as follows: DROP INDEX [schema_name.]index_name; Code language: JavaScript ( javascript )
Use the DROP INDEX statement to remove an index or domain index from the database. When you drop a global partitioned index, a range-partitioned index, or a hash-partitioned index, all the index partitions are also dropped.
The DROP INDEX command is used to delete an index in a table. MS Access: DROP INDEX index_name ON table_name; SQL Server: DROP INDEX table_name.index_name; DB2/Oracle: DROP INDEX index_name; MySQL: ALTER TABLE table_name.
Use the DROP INDEX statement to remove an index or domain index from the database. When you drop an index, Oracle Database invalidates all objects that depend on the underlying table, including views, packages, package bodies, functions, and procedures.
2 Ιουν 2014 · In Oracle, you can't mix both DDL and DML. In order to do so, you need to work it around with the EXECUTE IMMEDIATE statement. So, first check for the existence of the index. Second, drop the index through the EXECUTE IMMEDIATE statement.
This Oracle tutorial explains how to create, rename and drop indexes in Oracle with syntax and examples. An index is a performance-tuning method of allowing faster retrieval of records.
26 Ιουν 2017 · To drop an index in Oracle SQL, you use the DROP command. DROP INDEX index_name; It’s a simple command and has only one option to change, which is the name of the index you wish to drop. So, to drop your index called idx_cust_fullname, your command would be: DROP INDEX idx_cust_fullname;
