Specify the schema containing the synonym. Restrictions. The following example illustrates how to drop a private synonym and a public synonym using the Oracle DROP SYNONYM command. Description.
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Example to drop a plsql synonym is: To create a synonym we simply have to specify a synonym name and name of database object to which it will be assigned.
DROP SYNONYM statement.
Stack Overflow for Teams is a private, secure spot for you and site design / logo © 2020 Stack Exchange Inc; user contributions licensed under If schema is not specified, SQL Server uses the default schema of the current user. IF EXISTS Applies to: SQL Server ( SQL Server 2016 (13.x) through current version) Conditionally drops the synonym only if it already exists. object_name[@ dblink] Creates a public or private synonym for a database object. This statement is an extension to the ANSI/ISO standardfor SQL. For that reason, here is a script to list the synonyms in a specific database; SELECT name AS synonym_name, CREATE/DROP SYNONYM CREATE [PUBLIC] SYNONYM synonym_name FOR [ schema.] But keeping track of all the synonyms in your database can be problematic. Did you know SQL Server has a thing called a synonym? It The Overflow Blog Featured on Meta To modify the synonym you must DROP it and recreate. Syntax. If you drop a synonym for the master table of a materialized view, and if the defining query of the materialized view specified the synonym rather than the actual table name, then Oracle Database marks the materialized view unusable. synonym will only be used if the object name is not prefaced with a If you do not supply a schema name when defining a synonym, the database engine assumes you want to use the default schema named [dbo]. schema name, is not followed by a Create a public synonym for scott's emp table on the UK The concept of a synonym was introduced in SQL Server 2005. @Oracle resolves object names in the current schema first, so a PUBLIC
The user must be:A grantee holding ALTER SCHEMA permission on the containing schema. If the synonym belongs to a schema, you must specify its schema name. My solution involves having to add an identical stored procedure to every database, which seems prone to error.Thanks for contributing an answer to Stack Overflow! It's not something you see used very often even though it's been around for >10 years (SQL 2005).
To view Transact-SQL syntax for SQL Server 2014 and earlier, see Conditionally drops the synonym only if it already exists.References to synonyms are not schema-bound; therefore, you can drop a synonym at any time. synonym_name [force]; PUBLIC Allows you to drop a public synonym. The PUBLIC phrase in the above oracle plsql drop synonym syntax allows us to drop a public synonym, if we have specified public then we don’t have to specify a schema for the plsql synonym. Synonyms names must be T-SQL identifiers just as for other database objects. Second, use the FORCE keyword to delete the synonym even if it has dependent tables or user-defined types. The Oracle DROP SYNONYM command is used to drop public and private synonyms. DROP [PUBLIC] SYNONYM [schema .] schema Specifies the schema in which the synonym exists. synonym. O’Reilly members experience live online training, plus books, videos, and digital content from Creates a public or private synonym for a database object.Removes a public or private synonym from the database.Specifies that this synonym will be available to all users. If you drop a synonym for the master table of a materialized view, and if the defining query of the materialized view specified the synonym rather than the actual table name, then Oracle Database marks the materialized view unusable.
SQL> -- Drop public synonym SQL> DROP PUBLIC SYNONYM emp; SQL> -- Drop private synonym SQL> DROP SYNONYM emp; Synonyms cannot be altered using ALTER statement. >>-DROP SYNONYM--+-----------+--+------------+--synonym-------->< '-IF EXISTS-' '- owner --.-'. The FORCE phrase in the above oracle plsql drop synonym syntax will drop the synonym even if there are dependencies on it.
If you skip the schema name, Oracle will assume that you delete the synonym in your own schema. your coworkers to find and share information.
If a synonym in the current database refers to a dropped table or view in another database, however, that synonym remains registered in the system catalog until you explicitly drop it by using the DROP SYNONYM statement. Stack Overflow works best with JavaScript enabled Let's start… This doesn't work because I am using the Customers database but need to drop the synonym from my employees database.
Specify the name of the synonym to be dropped.
If you specified a PUBLIC, you may not need to specify a schema. The syntax to drop a synonym in Oracle is: DROP [PUBLIC] SYNONYM [schema .] In fact, I'd be willing to bet that a good chunk of the people reading this have never (or just recently) heard of them. synonym. It is probably not a good idea to use force as it can cause invalidation of Oracle objects. So with the pair of databases restored under new names, a quick script was needed to drop and recreate all the synonyms so that they point to the correct database name. The main purpose of the construct is to provide a simple name to reference a database object that is addressed by a two, three or four part notation. sql> drop synonym emp; Unless you have the Oracle DROP ANY SYNONYM system privilege, the synonym you wish to drop must be in your schema. Use the DROP SYNONYM statement to unregister an existingsynonym. Even though it sounds simple, they can be very helpful for DBAs. Element. Create Synonym.
If you have specified PUBLIC, then you don't specify a schema. Free 30 Day Trial
The Synonym can be simply dropped by passing the Synonym name to the DROP SYNONYM T-SQL statement as in the script below:
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