NexusDB V3 Manual
DROP ROUTINE statement
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NexusDB Manual V3 > SQL Reference > SQL Statements > Schema Statements
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Delete a user-defined procedure or function.
Syntax
<drop routine statement> ::=
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DROP <routine type> [ IF EXISTS ] [ schema-name. ] routine-name [ RESTRICT ]
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<routine type> ::=
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ROUTINE
FUNCTION
PROCEDURE
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Usage
The DROP ROUTINE statement deletes the procedure or function specified by routine-name from the database.
Notes
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The current database is implicit if a schema name is not specified.
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ROUTINE can be specified to indicate that the routine type can be either procedure or function.
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If PROCEDURE or FUNCTION is specified, then the routine being deleted must be the specified type.
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The IF EXISTS clause can be specified to avoid an exception when attempting to delete a routine that does not exist in the database.
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RESTRICT, which is implicit if not explicitly specified, prevents the routine from being deleted if the routine is referenced by other database objects.
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The DROP ROUTINE statement requires exclusive access to the routine being deleted.
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Examples
1)
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The following example deletes the getStudents function:
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DROP FUNCTION IF EXISTS getStudents
2)
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The following example deletes the getStudents function using the ROUTINE keyword:
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DROP ROUTINE IF EXISTS getStudents
3)
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The following example deletes the studentNames procedure:
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DROP PROCEDURE IF EXISTS studentNames
Conformance
SQL:2003 standard
NexusDB extensions
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Core SQL
IF EXISTS clause
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