- •Contents
- •Send Us Your Comments
- •Preface
- •What’s New in SQL Reference?
- •1 Introduction to Oracle SQL
- •History of SQL
- •SQL Standards
- •Embedded SQL
- •Lexical Conventions
- •Tools Support
- •2 Basic Elements of Oracle SQL
- •Datatypes
- •Oracle Built-in Datatypes
- •ANSI, DB2, and SQL/DS Datatypes
- •Oracle-Supplied Types
- •"Any" Types
- •XML Types
- •Spatial Type
- •Media Types
- •Datatype Comparison Rules
- •Data Conversion
- •Literals
- •Text Literals
- •Integer Literals
- •Number Literals
- •Interval Literals
- •Format Models
- •Number Format Models
- •Date Format Models
- •String-to-Date Conversion Rules
- •XML Format Model
- •Nulls
- •Nulls in SQL Functions
- •Nulls with Comparison Conditions
- •Nulls in Conditions
- •Pseudocolumns
- •CURRVAL and NEXTVAL
- •LEVEL
- •ROWID
- •ROWNUM
- •XMLDATA
- •Comments
- •Comments Within SQL Statements
- •Comments on Schema Objects
- •Hints
- •Database Objects
- •Schema Objects
- •Nonschema Objects
- •Parts of Schema Objects
- •Schema Object Names and Qualifiers
- •Schema Object Naming Rules
- •Schema Object Naming Examples
- •Schema Object Naming Guidelines
- •Syntax for Schema Objects and Parts in SQL Statements
- •How Oracle Resolves Schema Object References
- •Referring to Objects in Other Schemas
- •Referring to Objects in Remote Databases
- •Referencing Object Type Attributes and Methods
- •3 Operators
- •About SQL Operators
- •Unary and Binary Operators
- •Operator Precedence
- •Arithmetic Operators
- •Concatenation Operator
- •Set Operators
- •4 Expressions
- •About SQL Expressions
- •Simple Expressions
- •Compound Expressions
- •CASE Expressions
- •CURSOR Expressions
- •Datetime Expressions
- •Function Expressions
- •INTERVAL Expressions
- •Object Access Expressions
- •Scalar Subquery Expressions
- •Type Constructor Expressions
- •Variable Expressions
- •Expression Lists
- •5 Conditions
- •About SQL Conditions
- •Condition Precedence
- •Comparison Conditions
- •Simple Comparison Conditions
- •Group Comparison Conditions
- •Logical Conditions
- •Membership Conditions
- •Range Conditions
- •Null Conditions
- •EQUALS_PATH
- •EXISTS Conditions
- •LIKE Conditions
- •IS OF type Conditions
- •UNDER_PATH
- •Compound Conditions
- •6 Functions
- •SQL Functions
- •Single-Row Functions
- •Aggregate Functions
- •Analytic Functions
- •Object Reference Functions
- •Alphabetical Listing of SQL Functions
- •ACOS
- •ADD_MONTHS
- •ASCII
- •ASCIISTR
- •ASIN
- •ATAN
- •ATAN2
- •BFILENAME
- •BITAND
- •CAST
- •CEIL
- •CHARTOROWID
- •COALESCE
- •COMPOSE
- •CONCAT
- •CONVERT
- •CORR
- •COSH
- •COUNT
- •COVAR_POP
- •COVAR_SAMP
- •CUME_DIST
- •CURRENT_DATE
- •CURRENT_TIMESTAMP
- •DBTIMEZONE
- •DECODE
- •DECOMPOSE
- •DENSE_RANK
- •DEPTH
- •DEREF
- •DUMP
- •EMPTY_BLOB, EMPTY_CLOB
- •EXISTSNODE
- •EXTRACT (datetime)
- •EXTRACT (XML)
- •EXTRACTVALUE
- •FIRST
- •FIRST_VALUE
- •FLOOR
- •FROM_TZ
- •GREATEST
- •GROUP_ID
- •GROUPING
- •GROUPING_ID
- •HEXTORAW
- •INITCAP
- •INSTR
- •LAST
- •LAST_DAY
- •LAST_VALUE
- •LEAD
- •LEAST
- •LENGTH
- •LOCALTIMESTAMP
- •LOWER
- •LPAD
- •LTRIM
- •MAKE_REF
- •MONTHS_BETWEEN
- •NCHR
- •NEW_TIME
- •NEXT_DAY
- •NLS_CHARSET_DECL_LEN
- •NLS_CHARSET_ID
- •NLS_CHARSET_NAME
- •NLS_INITCAP
- •NLS_LOWER
- •NLSSORT
- •NLS_UPPER
- •NTILE
- •NULLIF
- •NUMTODSINTERVAL
- •NUMTOYMINTERVAL
- •PATH
- •PERCENT_RANK
- •PERCENTILE_CONT
- •PERCENTILE_DISC
- •POWER
- •RANK
- •RATIO_TO_REPORT
- •RAWTOHEX
- •RAWTONHEX
- •REFTOHEX
- •REGR_ (Linear Regression) Functions
- •REPLACE
- •ROUND (number)
- •ROUND (date)
- •ROW_NUMBER
- •ROWIDTOCHAR
- •ROWIDTONCHAR
- •RPAD
- •RTRIM
- •SESSIONTIMEZONE
- •SIGN
- •SINH
- •SOUNDEX
- •SQRT
- •STDDEV
- •STDDEV_POP
- •STDDEV_SAMP
- •SUBSTR
- •SYS_CONNECT_BY_PATH
- •SYS_CONTEXT
- •SYS_DBURIGEN
- •SYS_EXTRACT_UTC
- •SYS_GUID
- •SYS_TYPEID
- •SYS_XMLAGG
- •SYS_XMLGEN
- •SYSDATE
- •SYSTIMESTAMP
- •TANH
- •TO_CHAR (character)
- •TO_CHAR (datetime)
- •TO_CHAR (number)
- •TO_CLOB
- •TO_DATE
- •TO_DSINTERVAL
- •TO_MULTI_BYTE
- •TO_NCHAR (character)
- •TO_NCHAR (datetime)
- •TO_NCHAR (number)
- •TO_NCLOB
- •TO_NUMBER
- •TO_SINGLE_BYTE
- •TO_TIMESTAMP
- •TO_TIMESTAMP_TZ
- •TO_YMINTERVAL
- •TRANSLATE
- •TRANSLATE ... USING
- •TREAT
- •TRIM
- •TRUNC (number)
- •TRUNC (date)
- •TZ_OFFSET
- •UNISTR
- •UPDATEXML
- •UPPER
- •USER
- •USERENV
- •VALUE
- •VAR_SAMP
- •VARIANCE
- •VSIZE
- •WIDTH_BUCKET
- •XMLAGG
- •XMLCOLATTVAL
- •XMLCONCAT
- •XMLELEMENT
- •XMLFOREST
- •XMLSEQUENCE
- •XMLTRANSFORM
- •ROUND and TRUNC Date Functions
- •User-Defined Functions
- •Prerequisites
- •Name Precedence
- •7 Common SQL DDL Clauses
- •allocate_extent_clause
- •constraints
- •deallocate_unused_clause
- •file_specification
- •logging_clause
- •parallel_clause
- •physical_attributes_clause
- •storage_clause
- •8 SQL Queries and Subqueries
- •About Queries and Subqueries
- •Creating Simple Queries
- •Hierarchical Queries
- •The UNION [ALL], INTERSECT, MINUS Operators
- •Sorting Query Results
- •Joins
- •Using Subqueries
- •Unnesting of Nested Subqueries
- •Selecting from the DUAL Table
- •Distributed Queries
- •9 SQL Statements: ALTER CLUSTER to ALTER SEQUENCE
- •Types of SQL Statements
- •Organization of SQL Statements
- •ALTER CLUSTER
- •ALTER DATABASE
- •ALTER DIMENSION
- •ALTER FUNCTION
- •ALTER INDEX
- •ALTER INDEXTYPE
- •ALTER JAVA
- •ALTER MATERIALIZED VIEW
- •ALTER MATERIALIZED VIEW LOG
- •ALTER OPERATOR
- •ALTER OUTLINE
- •ALTER PACKAGE
- •ALTER PROCEDURE
- •ALTER PROFILE
- •ALTER RESOURCE COST
- •ALTER ROLE
- •ALTER ROLLBACK SEGMENT
- •ALTER SEQUENCE
- •10 SQL Statements: ALTER SESSION to ALTER SYSTEM
- •ALTER SESSION
- •ALTER SYSTEM
- •ALTER TABLE
- •ALTER TABLESPACE
- •ALTER TRIGGER
- •ALTER TYPE
- •ALTER USER
- •ALTER VIEW
- •ANALYZE
- •ASSOCIATE STATISTICS
- •AUDIT
- •CALL
- •COMMENT
- •COMMIT
- •13 SQL Statements: CREATE CLUSTER to CREATE JAVA
- •CREATE CLUSTER
- •CREATE CONTEXT
- •CREATE CONTROLFILE
- •CREATE DATABASE
- •CREATE DATABASE LINK
- •CREATE DIMENSION
- •CREATE DIRECTORY
- •CREATE FUNCTION
- •CREATE INDEX
- •CREATE INDEXTYPE
- •CREATE JAVA
- •14 SQL Statements: CREATE LIBRARY to CREATE SPFILE
- •CREATE LIBRARY
- •CREATE MATERIALIZED VIEW
- •CREATE MATERIALIZED VIEW LOG
- •CREATE OPERATOR
- •CREATE OUTLINE
- •CREATE PACKAGE
- •CREATE PACKAGE BODY
- •CREATE PFILE
- •CREATE PROCEDURE
- •CREATE PROFILE
- •CREATE ROLE
- •CREATE ROLLBACK SEGMENT
- •CREATE SCHEMA
- •CREATE SEQUENCE
- •CREATE SPFILE
- •15 SQL Statements: CREATE SYNONYM to CREATE TRIGGER
- •CREATE SYNONYM
- •CREATE TABLE
- •CREATE TABLESPACE
- •CREATE TEMPORARY TABLESPACE
- •CREATE TRIGGER
- •CREATE TYPE
- •CREATE TYPE BODY
- •CREATE USER
- •CREATE VIEW
- •DELETE
- •DISASSOCIATE STATISTICS
- •DROP CLUSTER
- •DROP CONTEXT
- •DROP DATABASE LINK
- •DROP DIMENSION
- •DROP DIRECTORY
- •DROP FUNCTION
- •DROP INDEX
- •DROP INDEXTYPE
- •DROP JAVA
- •DROP LIBRARY
- •DROP MATERIALIZED VIEW
- •DROP MATERIALIZED VIEW LOG
- •DROP OPERATOR
- •DROP OUTLINE
- •DROP PACKAGE
- •DROP PROCEDURE
- •DROP PROFILE
- •DROP ROLE
- •DROP ROLLBACK SEGMENT
- •17 SQL Statements: DROP SEQUENCE to ROLLBACK
- •DROP SEQUENCE
- •DROP SYNONYM
- •DROP TABLE
- •DROP TABLESPACE
- •DROP TRIGGER
- •DROP TYPE
- •DROP TYPE BODY
- •DROP USER
- •DROP VIEW
- •EXPLAIN PLAN
- •GRANT
- •INSERT
- •LOCK TABLE
- •MERGE
- •NOAUDIT
- •RENAME
- •REVOKE
- •ROLLBACK
- •18 SQL Statements: SAVEPOINT to UPDATE
- •SAVEPOINT
- •SELECT
- •SET CONSTRAINT[S]
- •SET ROLE
- •SET TRANSACTION
- •TRUNCATE
- •UPDATE
- •Required Keywords and Parameters
- •Optional Keywords and Parameters
- •Syntax Loops
- •Multipart Diagrams
- •Database Objects
- •ANSI Standards
- •ISO Standards
- •Oracle Compliance
- •FIPS Compliance
- •Oracle Extensions to Standard SQL
- •Character Set Support
- •Using Extensible Indexing
- •Using XML in SQL Statements
- •Index
DROP PROCEDURE
DROP PROCEDURE
Purpose
Use the DROP PROCEDURE statement to remove a standalone stored procedure from the database. Do not use this statement to remove a procedure that is part of a package. Instead, either drop the entire package using the DROP PACKAGE statement, or redefine the package without the procedure using the CREATE PACKAGE statement with the OR REPLACE clause.
See Also:
■CREATE PROCEDURE on page 14-64 for information on creating a procedure
■ALTER PROCEDURE on page 9-124 for information on modifying a procedure
Prerequisites
The procedure must be in your own schema or you must have the DROP ANY PROCEDURE system privilege.
Syntax
drop_procedure::=
|
schema |
. |
|
DROP |
PR0CEDURE |
procedure |
; |
Semantics
schema
Specify the schema containing the procedure. If you omit schema, Oracle assumes the procedure is in your own schema.
procedure
Specify the name of the procedure to be dropped.
When you drop a procedure, Oracle invalidates any local objects that depend upon the dropped procedure. If you subsequently reference one of these objects, Oracle
SQL Statements: CREATE TYPE to DROP ROLLBACK SEGMENT 16-93
DROP PROCEDURE
tries to recompile the object and returns an error message if you have not re-created the dropped procedure.
See Also: Oracle9i Database Concepts for information on how Oracle maintains dependencies among schema objects, including remote objects
Example
Dropping a Procedure: Example The following statement drops the procedure remove_emp owned by the user hr and invalidates all objects that depend upon remove_emp:
DROP PROCEDURE hr.remove_emp;
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DROP PROFILE
DROP PROFILE
Purpose
Use the DROP PROFILE statement to remove a profile from the database.
See Also:
■
■
CREATE PROFILE on page 14-71 on creating a profile
ALTER PROFILE on page 9-127 on modifying a profile
Prerequisites
You must have the DROP PROFILE system privilege.
Syntax
drop_profile::=
|
|
|
CASCADE |
DROP |
PROFILE |
profile |
; |
Semantics
profile
Specify the name of the profile to be dropped.
Restriction on Dropping Profiles You cannot drop the DEFAULT profile.
CASCADE
Specify CASCADE to deassign the profile from any users to whom it is assigned. Oracle automatically assigns the DEFAULT profile to such users. You must specify this clause to drop a profile that is currently assigned to users.
Example
Dropping a Profile: Example The following statement drops the profile app_user (created in "Creating a Profile: Example" on page 14-76):
DROP PROFILE app_user CASCADE;
SQL Statements: CREATE TYPE to DROP ROLLBACK SEGMENT 16-95
DROP PROFILE
Oracle drops the profile app_user and assigns the DEFAULT profile to any users currently assigned the app_user profile.
16-96 Oracle9i SQL Reference