Table Types and Type Groups in ABAP

 

Table Types

Table types are type definitions for Internal tables. By using them you can declare internal tables in your program.

Creating a table type
  • Go to SE11, select Data type Radio button, provide a name for table type, and click Create button. Ex. ZTSCARR

typegr1

  • Select Table type radio button and click Continue.

typegr2

  • In the maintenance screen provide short text
  • Provide an existing DDIC structure name as line type. Ex. SCARR

typegr3

  • under the tab initialization and access select the type of the internal table. Usually we create Standard tables.

typegr4

  • Finally Save and activate.
  • In the future programs internal tables without header line can be created using this table type. Ex. DATA it_data TYPE ZTSCARR.

Type Groups

Type group is a DDIC object which is a collection of user defined Data types and constants.

Creating a type group
  1. Go to SE11, select Type Group radio button and provide a name for it. Ex. ZBRSL, and click on Create button.

typegr5

  1. In the maintenance screen, provide short text and start creating your own user defined data types and Constants.

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  1. Every data type and Constant should be prefixed by the name of the type group.
TYPES: ZBRSL_STR(30) TYPE C.
TYPES: ZBRSL_FLOAT TYPE P DECIMALS 3.

TYPES: BEGIN OF ZBRSL_STUDENT,

               RNO TYPE I,

               NAME(20) TYPE C,

               FEE TYPE P DECIMALS 2,

          END OF ZBRSL_STUDENT.

CONSTANTS ZBRSL_PI TYPE P DECIMALS 3 VALUE '3.147'.

4. Finally save and Activate.

5. To use a type group in a program attach it to the program by the key word:

TYPE-POOLS        Ex: TYPE-POOLS ZBRSL.

 

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