ABAP Select data from SAP table ISU_CONFIG_MAP_ENROLL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_CONFIG_MAP_ENROLL 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 ISU_CONFIG_MAP_ENROLL. 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 ISU_CONFIG_MAP_ENROLL 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_ISU_CONFIG_MAP_ENROLL TYPE STANDARD TABLE OF ISU_CONFIG_MAP_ENROLL,
      WA_ISU_CONFIG_MAP_ENROLL TYPE ISU_CONFIG_MAP_ENROLL,
      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: <ISU_CONFIG_MAP_ENROLL> TYPE ISU_CONFIG_MAP_ENROLL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_CONFIG_MAP_ENROLL
*  INTO TABLE @DATA(IT_ISU_CONFIG_MAP_ENROLL2).
*--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_ISU_CONFIG_MAP_ENROLL INDEX 1 INTO DATA(WA_ISU_CONFIG_MAP_ENROLL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_CONFIG_MAP_ENROLL>-POD = 1.
<ISU_CONFIG_MAP_ENROLL>-EXT_UI = 1.
<ISU_CONFIG_MAP_ENROLL>-DISTRIBUTOR = 1.
<ISU_CONFIG_MAP_ENROLL>-SERVICEID = 1.
<ISU_CONFIG_MAP_ENROLL>-SERVICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_CONFIG_MAP_ENROLL-EXTERNALID, sy-vline,
  WA_ISU_CONFIG_MAP_ENROLL-CONSUMPTION, sy-vline,
  WA_ISU_CONFIG_MAP_ENROLL-CONSUMPTION, sy-vline,
  WA_ISU_CONFIG_MAP_ENROLL-INSTALLATION, sy-vline,
  WA_ISU_CONFIG_MAP_ENROLL-ANLAGE, sy-vline,
  WA_ISU_CONFIG_MAP_ENROLL-DEVICE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_CONFIG_MAP_ENROLL 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_ISU_CONFIG_MAP_ENROLL 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_ISU_CONFIG_MAP_ENROLL INTO WA_ISU_CONFIG_MAP_ENROLL.


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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISU_CONFIG_MAP_ENROLL-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_CONFIG_MAP_ENROLL-SERNR.
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_ISU_CONFIG_MAP_ENROLL_STR, 
POD TYPE STRING,
EXT_UI TYPE STRING,
DISTRIBUTOR TYPE STRING,
SERVICEID TYPE STRING,
SERVICE TYPE STRING,
EXTERNALID TYPE STRING,
CONSUMPTION TYPE STRING,
CONSUMPTION TYPE STRING,
INSTALLATION TYPE STRING,
ANLAGE TYPE STRING,
DEVICE TYPE STRING,
SERNR TYPE STRING,
PERVERBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_CONFIG_MAP_ENROLL_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_ISU_CONFIG_MAP_ENROLL_STR-POD sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-EXT_UI sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-DISTRIBUTOR sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-SERVICEID sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-SERVICE sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-EXTERNALID sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-CONSUMPTION sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-CONSUMPTION sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-INSTALLATION sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-ANLAGE sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-DEVICE sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-SERNR sy-vline 
WA_ISU_CONFIG_MAP_ENROLL_STR-PERVERBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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