ABAP Select data from SAP table ISGTDYNCAT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISGTDYNCAT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ISGTDYNCAT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ISGTDYNCAT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ISGTDYNCAT TYPE STANDARD TABLE OF ISGTDYNCAT,
      WA_ISGTDYNCAT TYPE ISGTDYNCAT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ISGTDYNCAT> TYPE ISGTDYNCAT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISGTDYNCAT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISGTDYNCAT
  INTO TABLE IT_ISGTDYNCAT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISGTDYNCAT
*  INTO TABLE @DATA(IT_ISGTDYNCAT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ISGTDYNCAT INDEX 1 INTO DATA(WA_ISGTDYNCAT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISGTDYNCAT ASSIGNING <ISGTDYNCAT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISGTDYNCAT>-MANDT = 1.
<ISGTDYNCAT>-SEGMENTATIONRECORDNUMBER = 1.
<ISGTDYNCAT>-SEGMENTATIONSTRATEGY = 1.
<ISGTDYNCAT>-PRODUCTSEGMENTATIONAPPLICATION = 1.
<ISGTDYNCAT>-PRODUCTSEGMENTATIONSTARTDATE = 1.

ENDLOOP.

LOOP AT IT_ISGTDYNCAT INTO WA_ISGTDYNCAT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISGTDYNCAT-PRODUCTSEGMENTATIONENDDATE, sy-vline,
  WA_ISGTDYNCAT-SALESDOCUMENTTYPE, sy-vline,
  WA_ISGTDYNCAT-SALESORGANIZATION, sy-vline,
  WA_ISGTDYNCAT-DISTRIBUTIONCHANNEL, sy-vline,
  WA_ISGTDYNCAT-DIVISION, sy-vline,
  WA_ISGTDYNCAT-SALESGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISGTDYNCAT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ISGTDYNCAT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ISGTDYNCAT INTO WA_ISGTDYNCAT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit AUART, internal->external for field SALESDOCUMENTTYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_ISGTDYNCAT-SALESDOCUMENTTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISGTDYNCAT-SALESDOCUMENTTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISGTDYNCAT-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISGTDYNCAT-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISGTDYNCAT-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISGTDYNCAT-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PRODUCTPLANNINGMATERIALCODE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISGTDYNCAT-PRODUCTPLANNINGMATERIALCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISGTDYNCAT-PRODUCTPLANNINGMATERIALCODE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISGTDYNCAT_STR, 
MANDT TYPE STRING,
SEGMENTATIONRECORDNUMBER TYPE STRING,
SEGMENTATIONSTRATEGY TYPE STRING,
PRODUCTSEGMENTATIONAPPLICATION TYPE STRING,
PRODUCTSEGMENTATIONSTARTDATE TYPE STRING,
PRODUCTSEGMENTATIONENDDATE TYPE STRING,
SALESDOCUMENTTYPE TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SALESGROUP TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERGROUP TYPE STRING,
COUNTRYORREGION TYPE STRING,
PURCHASINGORDERTYPE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
PLANT TYPE STRING,
PURCHASINGAGREEMENTTYPE TYPE STRING,
PLANNINGPLANT TYPE STRING,
PLANNEDORDERTYPE TYPE STRING,
MRPAREA TYPE STRING,
MRPGROUP TYPE STRING,
PROCUREMENTTYPE TYPE STRING,
PRODUCTPLANNINGMATERIALCODE TYPE STRING,
MATERIALGROUP TYPE STRING,
PRODSGMTDEFAULTVALUECODE TYPE STRING,
DYNAMICSEGMENTATIONVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISGTDYNCAT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ISGTDYNCAT_STR-MANDT sy-vline 
WA_ISGTDYNCAT_STR-SEGMENTATIONRECORDNUMBER sy-vline 
WA_ISGTDYNCAT_STR-SEGMENTATIONSTRATEGY sy-vline 
WA_ISGTDYNCAT_STR-PRODUCTSEGMENTATIONAPPLICATION sy-vline 
WA_ISGTDYNCAT_STR-PRODUCTSEGMENTATIONSTARTDATE sy-vline 
WA_ISGTDYNCAT_STR-PRODUCTSEGMENTATIONENDDATE sy-vline 
WA_ISGTDYNCAT_STR-SALESDOCUMENTTYPE sy-vline 
WA_ISGTDYNCAT_STR-SALESORGANIZATION sy-vline 
WA_ISGTDYNCAT_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_ISGTDYNCAT_STR-DIVISION sy-vline 
WA_ISGTDYNCAT_STR-SALESGROUP sy-vline 
WA_ISGTDYNCAT_STR-CUSTOMER sy-vline 
WA_ISGTDYNCAT_STR-CUSTOMERGROUP sy-vline 
WA_ISGTDYNCAT_STR-COUNTRYORREGION sy-vline 
WA_ISGTDYNCAT_STR-PURCHASINGORDERTYPE sy-vline 
WA_ISGTDYNCAT_STR-PURCHASINGORGANIZATION sy-vline 
WA_ISGTDYNCAT_STR-PURCHASINGGROUP sy-vline 
WA_ISGTDYNCAT_STR-SUPPLIER sy-vline 
WA_ISGTDYNCAT_STR-SUPPLYINGPLANT sy-vline 
WA_ISGTDYNCAT_STR-PLANT sy-vline 
WA_ISGTDYNCAT_STR-PURCHASINGAGREEMENTTYPE sy-vline 
WA_ISGTDYNCAT_STR-PLANNINGPLANT sy-vline 
WA_ISGTDYNCAT_STR-PLANNEDORDERTYPE sy-vline 
WA_ISGTDYNCAT_STR-MRPAREA sy-vline 
WA_ISGTDYNCAT_STR-MRPGROUP sy-vline 
WA_ISGTDYNCAT_STR-PROCUREMENTTYPE sy-vline 
WA_ISGTDYNCAT_STR-PRODUCTPLANNINGMATERIALCODE sy-vline 
WA_ISGTDYNCAT_STR-MATERIALGROUP sy-vline 
WA_ISGTDYNCAT_STR-PRODSGMTDEFAULTVALUECODE sy-vline 
WA_ISGTDYNCAT_STR-DYNAMICSEGMENTATIONVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.