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Oracle Tutorials - Use SQL Statements in PL/SQL

By: FYIcenter.com

(Continued from previous topic...)

How To Use SQL Statements in PL/SQL?

SQL DML (Data Manipulation Language) statements can be included in PL/SQL code blocks directly without any changes. See the script below for examples:

SQL> CREATE TABLE tip (id NUMBER(5) PRIMARY KEY,
  2    subject VARCHAR(80) NOT NULL,
  3    description VARCHAR(256) NOT NULL);
Table created.

SQL> BEGIN
  2    INSERT INTO tip VALUES(1, 'PL/SQL',
  3       'Good for beginners.');
  4    UPDATE tip SET description = 'Good for beginners.';
  5  END;
  6  /
PL/SQL procedure successfully completed.

SQL> COL subject FORMAT A12;
SQL> COL description FORMAT A24;
SQL> SELECT * FROM tip;
        ID SUBJECT      DESCRIPTION
---------- ------------ -------------------
         1 PL/SQL       Good for beginners.

SQL> DROP TABLE tip;
Table dropped.

This script example actually has 3 parts:

• Part 1 - A single DDL (Data Definition Language) statement, CREATE TABLE, outside the PL/SQL code block.
• Part 2 - A PL/SQL code block defined and executed to insert and updated a record.
• Part 3 - A couple of SQL statements outside the PL/SQL code block to view the record and trop the table.

(Continued on next topic...)

1. What Is PL/SQL?
2. What Are the Types PL/SQL Code Blocks?
3. How To Define an Anonymous Block?
4. How Many Anonymous Blocks Can Be Defined?
5. How To Run the Anonymous Block Again?
6. What Is a Stored Program Unit?
7. How To Create a Stored Program Unit?
8. How To Execute a Stored Program Unit?
9. How Many Data Types Are Supported?
10. What Are the Execution Flow Control Statements?
11. How To Use SQL Statements in PL/SQL?
12. How To Process Query Result in PL/SQL?
13. How To Create an Array in PL/SQL?
14. How To Manage Transaction Isolation Level?
15. How To Pass Parameters to Procedures?
16. How To Define a Procedure inside Another Procedure?
17. What Do You Think about PL/SQL?