ABAP Select data from SAP table AWORKCTRALLCAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AWORKCTRALLCAP
*  INTO TABLE @DATA(IT_AWORKCTRALLCAP2).
*--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_AWORKCTRALLCAP INDEX 1 INTO DATA(WA_AWORKCTRALLCAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AWORKCTRALLCAP>-MANDT = 1.
<AWORKCTRALLCAP>-WORKCENTERINTERNALID = 1.
<AWORKCTRALLCAP>-WORKCENTERTYPECODE = 1.
<AWORKCTRALLCAP>-CAPACITYINTERNALID = 1.
<AWORKCTRALLCAP>-CAPACITYCATEGORYALLOCATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AWORKCTRALLCAP-WORKCENTER, sy-vline,
  WA_AWORKCTRALLCAP-WORKCENTERDESC, sy-vline,
  WA_AWORKCTRALLCAP-PLANT, sy-vline,
  WA_AWORKCTRALLCAP-WORKCENTERCATEGORYCODE, sy-vline,
  WA_AWORKCTRALLCAP-WORKCENTERRESPONSIBLE, sy-vline,
  WA_AWORKCTRALLCAP-SUPPLYAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AWORKCTRALLCAP 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_AWORKCTRALLCAP 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_AWORKCTRALLCAP INTO WA_AWORKCTRALLCAP.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_AWORKCTRALLCAP_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERDESC TYPE STRING,
PLANT TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
SUPPLYAREA TYPE STRING,
WORKCENTERUSAGE TYPE STRING,
WORKCENTERRESPONSIBLENAME TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AWORKCTRALLCAP_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_AWORKCTRALLCAP_STR-MANDT sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERINTERNALID sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERTYPECODE sy-vline 
WA_AWORKCTRALLCAP_STR-CAPACITYINTERNALID sy-vline 
WA_AWORKCTRALLCAP_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTER sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERDESC sy-vline 
WA_AWORKCTRALLCAP_STR-PLANT sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_AWORKCTRALLCAP_STR-SUPPLYAREA sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERUSAGE sy-vline 
WA_AWORKCTRALLCAP_STR-WORKCENTERRESPONSIBLENAME sy-vline 
WA_AWORKCTRALLCAP_STR-CAPACITYCATEGORYCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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