For example: CREATE PROCEDURE SUBWOOFER() ... No two identically-named procedures within a schema are permitted to have exactly the same number of parameters. A duplicate signature raises an SQL error (SQLSTATE 42723). For example, given the statements: CREATE PROCEDURE PART (IN NUMBER INT...
statementCREATE FUNCTION (external scalar)-statementCREATE FUNCTION (external table)-statementCREATE FUNCTION (sourced)-statementCREATE INDEX-statementCREATE MASK-statementCREATE PERMISSION-statementCREATE PROCEDURE (external)-statementCREATE SCHEMA-statementCREATE SEQUENCE-statementCREATE TABLE-statementCREATE TYPE-...
例如,要使用insert_user存储过程向users表格中插入一条新记录,可以使用以下SQL语句: CALL insert_user('john_doe', 'john.doe@example.com', 'secure_password'); 修改存储过程 要修改存储过程的定义,可以使用DROP PROCEDURE语句删除现有存储过程,然后使用CREATE PROCEDURE语句重新创建。在某些数据库管理系统中,还可以...
The following SQL creates a stored procedure named "SelectAllCustomers" that selects all records from the "Customers" table:ExampleGet your own SQL Server CREATE PROCEDURE SelectAllCustomersASSELECT * FROM CustomersGO; Execute the stored procedure above as follows:...
CREATE PROC What_DB_is_this AS SELECT DB_NAME() AS ThisDB; Call the store procedure with statement: EXEC What_DB_is_this;Slightly more complex, is to provide an input parameter to make the procedure more flexible. For example:SQL Kopier ...
Create Triger Example CREATE OR REPLACE TRIGGERmy_sal_changes BEFORE DELETE OR INSERT OR UPDATE ON Emp_tab FOR EACH ROW WHEN (new.Empno > 0) DECLARE sal_diff number; BEGIN sal_diff := :new.sal – :old.sal; dbms_output.put(‘Old salary: ‘ || :old.sal); ...
Is an optional integer that is used to group procedures of the same name. These grouped procedures can be dropped together by using one DROP PROCEDURE statement. For example, an application calledordersmight use procedures namedorderproc;1,orderproc;2, and so on. The DROP PROCEDUREorderprocstate...
IN OUT - The parameter can be referenced by the procedure or function and the value of the parameter can be overwritten by the procedure or function. The following is a simple example of a procedure: CREATE OR REPLACE Procedure UpdateCourse ...
CREATE PROC What_DB_is_this AS SELECT DB_NAME() AS ThisDB; Call the store procedure with statement: EXEC What_DB_is_this;Slightly more complex, is to provide an input parameter to make the procedure more flexible. For example:SQL Αντιγραφή CREATE PROC What_DB_is_that @...
Is an optional integer that is used to group procedures of the same name. These grouped procedures can be dropped together by using one DROP PROCEDURE statement. For example, an application calledordersmight use procedures namedorderproc;1,orderproc;2, and so on. The DROP PROCEDUREorderprocstate...