Oracle | DBMS

Oracle DBMS_SQLHASH Version 21c

General Information

Library Note

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Purpose Apply a supported cryptographic hash function to a SQL statement. This function can not be used to hash a string that is not a valid SQL statement.

AUTHID CURRENT_USER

Constants Uses DBMS_CRYPTO constants. See link at page bottom

Dependencies

DBMS_CRYPTO	DBMS_SQL	UTL_RAW
DBMS_LOB

Documented No

First Available 12.1

Pragma PRAGMA SUPPLEMENTAL_LOG_DATA(default, NONE);

Security Model Owned by SYS with no privileges granted

Source {ORACLE_HOME}/rdbms/admin/dbmsobtk.sql

GETHASH

Provides an interface to generate the hash value of the result set returned by a SQL query dbms_sqlhash.gethash( sqltext IN VARCHAR2, -- input sql statement digest_type IN BINARY_INTEGER, -- digest algorithm type chunk_size IN NUMBER DEFAULT 134217728) -- 128M RETURN RAW;

set serveroutput on

      

      DECLARE

       sqlstr  VARCHAR2(4000):='SELECT object_name FROM all_objects WHERE rownum = 1';

       digtype PLS_INTEGER := 3;

       RetVal  RAW(2000);
      

      BEGIN

        SELECT dbms_sqlhash.gethash(sqlstr, dbms_crypto.hash_sh1)

        INTO RetVal

        FROM dual;

      

        dbms_output.put_line(RetVal);

      END;

      /