drop_index_statement ::= DROP INDEX [IF EXISTS] index_name ON table_name Semantics If an index with the given name does not exist, then the statement fails, and an error is reported. If the optional IF EXISTS clause is used in the DROP INDEX statement, and if an index with the same...
Oracle DROP INDEX Summary: in this tutorial, you will learn how to use the OracleDROP INDEXstatement to remove an index. Introduction to Oracle DROP INDEX statement TheDROP INDEXstatement allows you to drop an existingindex. The syntax of theDROP INDEXstatement is as simple as follows:...
DROP INDEX index-Name Examples DROP INDEX OrigIndex DROP INDEX DestIndex Statement dependency system If there is an open cursor on the table from which the index is dropped, the DROP INDEX statement generates an error and does not drop the index. Otherwise, statements that depend on the index...
Both the unique and non-unique indexes are the B-Tree index structure versions. By default, the B-Tree index is non-unique. To create unique index in Oracle, you need to use the UNIQUE keyword in the CREATE INDEX statement. And now, let’s proceed to the process of creating different ...
Drop Index in PostgreSQL 9.3.13 DROP INDEX -- remove an index Syntax: DROP INDEX [ CONCURRENTLY ] [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ] Drop Index in Oracle 11g In Oracle, DROP INDEX statement is used to remove an index or domain index from the database. ...
Drop Index 取消索引 You can delete an existing index in a table with the DROP INDEX statement. 你可以将现有的索引通过DROP INDEX语句进行取消操作。 Syntax for Microsoft SQLJet (and Microsoft Access): 在Microsoft SQLJet (和 Microsoft Access)中的语法是这样的: ...
3. In oracledatabaseyou can define up to sixteen (16) columns in an INDEX. You’ll also like: SQL CREATE INDEX Statement and Types of Indexes SQL DROP TABLE Statement HTML Drop Down Menu JSTL SQL sql:update Tag JSTL SQL sql:query Tag ...
ORA-01418: specified index does not exist ORA-06512: at "<SCHEMA_NAME>.<PACKAGE_NAME>", line 69---We have a package where the function is mentioned as:function <FUNTION_NAME>(in_statement in varchar2) return integer;Function is constructed...
1) Using Oracle DROP USER to remove a user that has no schema object First, log in to the Oracle database using the userotusing SQL*Plus: CREATEUSERfooIDENTIFIEDBYabcd1234;Code language:SQL (Structured Query Language)(sql) Third, drop the userfoousing theDROP USERstatement: ...
13.1.25 DROP INDEX Statement DROPINDEXindex_nameONtbl_name[algorithm_option|lock_option]...algorithm_option:ALGORITHM[=]{DEFAULT|INPLACE|COPY}lock_option:LOCK[=]{DEFAULT|NONE|SHARED|EXCLUSIVE} DROP INDEXdrops the index namedindex_namefrom the tabletbl_name. This statement is mapped to anALTER...