What is a stored procedure Teradata?

What is a stored procedure Teradata?

A stored procedure, a database object executed on the Teradata Database, is a combination of SQL statements and control and condition handling statements that provide an interface to the Teradata Database. The term stored procedure refers to a stored procedure you write with SQL statements.

What is in stored procedure?

Stored Procedures are created to perform one or more DML operations on Database. It is nothing but the group of SQL statements that accepts some input in the form of parameters and performs some task and may or may not returns a value.

What is the use of stored procedure?

Stored procedues in SQL allows us to create SQL queries to be stored and executed on the server. Stored procedures can also be cached and reused. The main purpose of stored procedures to hide direct SQL queries from the code and improve performance of database operations such as select, update, and delete data.

How do I run a stored procedure in Teradata?

Execute stored procedures either interactively, or include them in BTEQ scripts or input stream files. Use the Teradata SQL CALL statement to execute a stored procedure interactively: CALL samplesp1 (8888, pAmount); If the procedure is created with parameters, specify the parameter arguments within the parenthesis.

How do I view a procedure in Teradata?

SHOW PROCEDURE – Teradata The SHOW PROCEDURE command has been added to the Teradata RDBMS. It returns the SPL source text of a stored procedure if the stored procedure is created with SPL option. SHOW PROCEDURE [-name>.]

What is the difference between macro and stored procedure in Teradata?

The macro contains only SQL and maybe dot commands that are only for use in BTEQ. Normally a SELECT results in rows being returned to the user. A stored procedure does not return rows to the user like a macro. A stored procedure contains SQL to access data from within Teradata.

Why do we need stored procedure?

A stored procedure provides an important layer of security between the user interface and the database. It supports security through data access controls because end users may enter or change data, but do not write procedures. It improves productivity because statements in a stored procedure only must be written once.

What are advantages of stored procedure?

Advantages of Stored Procedures

• To help you build powerful database applications, stored procedures provide several advantages including better performance, higher productivity, ease of use, and increased scalability.
• Additionally, stored procedures enable you to take advantage of the computing resources of the server.

Does Teradata have stored procedures?

A stored procedure contains a set of SQL statements and procedural statements. These features provide a server-based procedural interface to Teradata Database for application programmers. Stored procedures can be a great benefit for some tactical query applications.

What is difference between macro and procedure?

A macro is used for a small number of instructions; mostly, less than ten instructions, while a procedure is used for a large number of instructions; mostly, higher than ten instructions. Hence, this is the main difference between macro and procedure.

Is a macro a stored procedure?

A procedure is not a macro and a macro is not a stored procedure.

Where are the procedures stored in the Teradata Database?

CLIv2 applications, ODBC, JDBC, and Teradata SQL Assistant (formerly called Queryman) using the SQL CREATE PROCEDURE or REPLACE PROCEDURE statement. The procedures are stored in the user database space as objects and are executed on the server.

How is the alter PROCEDURE statement used in Teradata?

The ALTER PROCEDURE statement enables recompilation of stored procedures without having to execute SHOW PROCEDURE and REPLACE PROCEDURE statements. Stored procedures created in earlier releases of Teradata Database can be recompiled to derive the benefits of new features and performance improvements.

Where are the parameters of a stored procedure stored?

A stored procedure contains a set of SQL statements and procedural statements. They may contain only procedural statements. The definition of stored procedure is stored in database and the parameters are stored in data dictionary tables. Stored procedures reduce the network load between the client and the server.

How to create a stored procedure in SQL?

CREATE PROCEDURE ( [parameter 1 data type, parameter 2 data type..] ) BEGIN ; END; Consider the following Salary Table. The following example creates a stored procedure named InsertSalary to accept the values and insert into Salary Table. Stored Procedures are executed using CALL statement.