Creating and Embedding SQL in COBOL There are certain requirements your COBOL programs must meet before they can be compiled and debugged. This chapter outlines the processes for creating or modifying SQL code for COBOL programs. It also details the statements that all COBOL programs containing embedded SQL must contain. Use of dynamic SQL in your program is described in the chapter. You can use any appropriate text editor to write your COBOL code and embed SQL in it. Be sure that your embedded SQL contains the elements listed below.

If you are using code from DB2 on a mainframe, it will not have to be modified. END-EXEC Blocks. Practical Lego Technics Pdf. Every SQL statement in your program must be included within an EXEC SQL. END-EXEC block as shown below: EXEC SQL SQL Statement END-EXEC For example: EXEC SQL DECLARE EMPCURS CURSOR FOR SELECT LNAME, FNAME, PAYRATE, HOURS FROM EMPLOYEE WHERE DEPT =:DEPT-NUM END-EXEC Each EXEC SQL. END-EXEC block must contain only one SQL statement.

Below is the sample program. MQ Series ZO/S and Cobol Sample Program. Program Files MQSeries tools COBOL COPYBOOK CMQODV.CPY”. Or you may have a COBOL copybook. Your COBOL source file may already be a complete COBOL program with the proper COBOL. The sample COBOL source file is. Sample COBOL program. This sample COBOL program is adapted to run under Fujitsu COBOL It uses the input file SENIOR.DAT the disk that accomapnies the text. About COBOL Copybooks. A COBOL copybook is a file that contains COBOL source code and is used. You must know about the program functions to. Sample COBOL Copybook.

If the SQL command is not terminated by an END-EXEC operand, a COBOL compiler error will be generated. • Host Variables. Use host variables to store data that is accessed by both SQL and COBOL statements. Use the EXEC SQL INCLUDE statement to include copybooks containing definitions for tables. • SQL Communications Area. Define an SQL Communications Area (SQLCA) in your COBOL program or include the SQLCA copybook, which contains the structure of the SQLCA. Create error-checking routines that use the SQLCA to control the flow of the program.

For more information, see the section. • SQL Descriptor Area. If your program uses dynamic SQL, you must have an SQL Descriptor Area (SQLDA) defined in your program. We recommend including the SQLDA copybook, provided with your COBOL system, which contains the structure of the SQLDA. Use host variables to get information stored in the various elements of the SQLDA. For more information about using the SQLDA, see the section and the chapter. In a typical development effort, different COBOL programs access the same data tables.