ABAP Select data from SAP table /WSCGMBH/C_RELATIONS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /WSCGMBH/C_RELATIONS 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 /WSCGMBH/C_RELATIONS. 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 /WSCGMBH/C_RELATIONS 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_/WSCGMBH/C_RELATIONS TYPE STANDARD TABLE OF /WSCGMBH/C_RELATIONS,
      WA_/WSCGMBH/C_RELATIONS TYPE /WSCGMBH/C_RELATIONS,
      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: </WSCGMBH/C_RELATIONS> TYPE /WSCGMBH/C_RELATIONS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /WSCGMBH/C_RELATIONS
  INTO TABLE IT_/WSCGMBH/C_RELATIONS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /WSCGMBH/C_RELATIONS
*  INTO TABLE @DATA(IT_/WSCGMBH/C_RELATIONS2).
*--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_/WSCGMBH/C_RELATIONS INDEX 1 INTO DATA(WA_/WSCGMBH/C_RELATIONS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/WSCGMBH/C_RELATIONS ASSIGNING </WSCGMBH/C_RELATIONS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</WSCGMBH/C_RELATIONS>-MANDT = 1.
</WSCGMBH/C_RELATIONS>-FSABD = 1.
</WSCGMBH/C_RELATIONS>-SSABD = 1.
</WSCGMBH/C_RELATIONS>-FEABD = 1.
</WSCGMBH/C_RELATIONS>-SEABD = 1.

ENDLOOP.

LOOP AT IT_/WSCGMBH/C_RELATIONS INTO WA_/WSCGMBH/C_RELATIONS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/WSCGMBH/C_RELATIONS-VORNR_VOR, sy-vline,
  WA_/WSCGMBH/C_RELATIONS-VORNR_NCH, sy-vline,
  WA_/WSCGMBH/C_RELATIONS-APLZL_VOR, sy-vline,
  WA_/WSCGMBH/C_RELATIONS-AUFPL_NCH, sy-vline,
  WA_/WSCGMBH/C_RELATIONS-APLZL_NCH, sy-vline,
  WA_/WSCGMBH/C_RELATIONS-AOBAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/WSCGMBH/C_RELATIONS 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_/WSCGMBH/C_RELATIONS 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_/WSCGMBH/C_RELATIONS INTO WA_/WSCGMBH/C_RELATIONS.


*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 NUMCV, internal->external for field VORNR_VOR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-VORNR_VOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-VORNR_VOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR_NCH
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-VORNR_NCH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-VORNR_NCH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AOBAR, internal->external for field AOBAR
CALL FUNCTION 'CONVERSION_EXIT_AOBAR_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-AOBAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-AOBAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-ZEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-ZEINH.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit NUMCV, internal->external for field VORN1
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-VORN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-VORN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORN2
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/WSCGMBH/C_RELATIONS-VORN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/WSCGMBH/C_RELATIONS-VORN2.
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_/WSCGMBH/C_RELATIONS_STR, 
MANDT TYPE STRING,
FSABD TYPE STRING,
SSABD TYPE STRING,
FEABD TYPE STRING,
SEABD TYPE STRING,
VORNR_VOR TYPE STRING,
VORNR_NCH TYPE STRING,
APLZL_VOR TYPE STRING,
AUFPL_NCH TYPE STRING,
APLZL_NCH TYPE STRING,
AOBAR TYPE STRING,
MIMAX TYPE STRING,
OBJNR TYPE STRING,
ZEINH TYPE STRING,
DAUER TYPE STRING,
DAUKZ TYPE STRING,
VORNC TYPE STRING,
NCVOR TYPE STRING,
LOEKZ TYPE STRING,
KALID TYPE STRING,
PRZNT TYPE STRING,
PROVG TYPE STRING,
ARBID TYPE STRING,
WERKS TYPE STRING,
DAUTM TYPE STRING,
AUCRE TYPE STRING,
DAUERMAX TYPE STRING,
AENNR TYPE STRING,
VBKZ TYPE STRING,
AUFNR_TVOR TYPE STRING,
AUFNR_TNCH TYPE STRING,
FLG_LOCK TYPE STRING,
FLG_SEL TYPE STRING,
VORN1 TYPE STRING,
VORN2 TYPE STRING,
INDBT_VOR1 TYPE STRING,
INDBT_VOR2 TYPE STRING,
VSNMR TYPE STRING,
INACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/WSCGMBH/C_RELATIONS_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_/WSCGMBH/C_RELATIONS_STR-MANDT sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-FSABD sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-SSABD sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-FEABD sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-SEABD sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VORNR_VOR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VORNR_NCH sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-APLZL_VOR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AUFPL_NCH sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-APLZL_NCH sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AOBAR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-MIMAX sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-OBJNR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-ZEINH sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-DAUER sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-DAUKZ sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VORNC sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-NCVOR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-LOEKZ sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-KALID sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-PRZNT sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-PROVG sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-ARBID sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-WERKS sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-DAUTM sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AUCRE sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-DAUERMAX sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AENNR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VBKZ sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AUFNR_TVOR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-AUFNR_TNCH sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-FLG_LOCK sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-FLG_SEL sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VORN1 sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VORN2 sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-INDBT_VOR1 sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-INDBT_VOR2 sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-VSNMR sy-vline 
WA_/WSCGMBH/C_RELATIONS_STR-INACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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