ABAP Select data from SAP table ATPC_UNION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATPC_UNION
*  INTO TABLE @DATA(IT_ATPC_UNION2).
*--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_ATPC_UNION INDEX 1 INTO DATA(WA_ATPC_UNION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATPC_UNION>-MANDT = 1.
<ATPC_UNION>-DELNR = 1.
<ATPC_UNION>-DELPS = 1.
<ATPC_UNION>-DELET = 1.
<ATPC_UNION>-ATPCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATPC_UNION-MATNR, sy-vline,
  WA_ATPC_UNION-WERKS, sy-vline,
  WA_ATPC_UNION-BERID, sy-vline,
  WA_ATPC_UNION-LGORT, sy-vline,
  WA_ATPC_UNION-CHARG, sy-vline,
  WA_ATPC_UNION-BWTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATPC_UNION 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_ATPC_UNION 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_ATPC_UNION INTO WA_ATPC_UNION.


*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 DELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATPC_UNION-DELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATPC_UNION-DELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ORDER_QTY_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATPC_UNION-ORDER_QTY_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATPC_UNION-ORDER_QTY_UOM.
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_ATPC_UNION_STR, 
MANDT TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
ATPCAT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BWTAR TYPE STRING,
SGT_RCAT TYPE STRING,
SOBKZ TYPE STRING,
SSKEY TYPE STRING,
SSKEY_EXT TYPE STRING,
GROUP_NUMBER TYPE STRING,
GROUP_TYPE TYPE STRING,
BILL_OF_MATERIAL TYPE STRING,
COMPLETE_DELIVERY TYPE STRING,
FIXMG TYPE STRING,
UEPVW TYPE STRING,
UEPOS TYPE STRING,
MTVFP TYPE STRING,
ABGRU TYPE STRING,
LFSTA TYPE STRING,
RESMD TYPE STRING,
REQ_CLASS TYPE STRING,
PSTYV TYPE STRING,
SLINE_CATEGORY TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
MAT_AVAIL_DATE TYPE STRING,
MAT_AVAIL_TIME TYPE STRING,
OPEN_REQQTY TYPE STRING,
OPEN_CNFQTY TYPE STRING,
BASE_UOM TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
AUART TYPE STRING,
VSBED TYPE STRING,
VSTEL TYPE STRING,
ROUTE TYPE STRING,
AULWE TYPE STRING,
PLIFZ TYPE STRING,
TDDAT TYPE STRING,
TDUHR TYPE STRING,
WADAT TYPE STRING,
WAUHR TYPE STRING,
LDDAT TYPE STRING,
LDUHR TYPE STRING,
ELDAT TYPE STRING,
ELUHR TYPE STRING,
DELIVERED_QTY TYPE STRING,
DELIVERED_QTY_UOM TYPE STRING,
PLANNING_TYPE TYPE STRING,
REQ_TYPE TYPE STRING,
SLINE_DATE TYPE STRING,
SLINE_TIME TYPE STRING,
ORDER_QTY TYPE STRING,
ORDER_QTY_UOM TYPE STRING,
UVVLK TYPE STRING,
FSH_CANDATE TYPE STRING,
PERFORM_SCHEDULING TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATE TYPE STRING,
SUBSTITUTION_STATUS TYPE STRING,
ORIGINAL_PLANT TYPE STRING,
SUBSTN_NUMERATOR TYPE STRING,
SUBSTN_DENOMINATOR TYPE STRING,
RECEIVING_WERKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATPC_UNION_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_ATPC_UNION_STR-MANDT sy-vline 
WA_ATPC_UNION_STR-DELNR sy-vline 
WA_ATPC_UNION_STR-DELPS sy-vline 
WA_ATPC_UNION_STR-DELET sy-vline 
WA_ATPC_UNION_STR-ATPCAT sy-vline 
WA_ATPC_UNION_STR-MATNR sy-vline 
WA_ATPC_UNION_STR-WERKS sy-vline 
WA_ATPC_UNION_STR-BERID sy-vline 
WA_ATPC_UNION_STR-LGORT sy-vline 
WA_ATPC_UNION_STR-CHARG sy-vline 
WA_ATPC_UNION_STR-BWTAR sy-vline 
WA_ATPC_UNION_STR-SGT_RCAT sy-vline 
WA_ATPC_UNION_STR-SOBKZ sy-vline 
WA_ATPC_UNION_STR-SSKEY sy-vline 
WA_ATPC_UNION_STR-SSKEY_EXT sy-vline 
WA_ATPC_UNION_STR-GROUP_NUMBER sy-vline 
WA_ATPC_UNION_STR-GROUP_TYPE sy-vline 
WA_ATPC_UNION_STR-BILL_OF_MATERIAL sy-vline 
WA_ATPC_UNION_STR-COMPLETE_DELIVERY sy-vline 
WA_ATPC_UNION_STR-FIXMG sy-vline 
WA_ATPC_UNION_STR-UEPVW sy-vline 
WA_ATPC_UNION_STR-UEPOS sy-vline 
WA_ATPC_UNION_STR-MTVFP sy-vline 
WA_ATPC_UNION_STR-ABGRU sy-vline 
WA_ATPC_UNION_STR-LFSTA sy-vline 
WA_ATPC_UNION_STR-RESMD sy-vline 
WA_ATPC_UNION_STR-REQ_CLASS sy-vline 
WA_ATPC_UNION_STR-PSTYV sy-vline 
WA_ATPC_UNION_STR-SLINE_CATEGORY sy-vline 
WA_ATPC_UNION_STR-BSTYP sy-vline 
WA_ATPC_UNION_STR-BSART sy-vline 
WA_ATPC_UNION_STR-MAT_AVAIL_DATE sy-vline 
WA_ATPC_UNION_STR-MAT_AVAIL_TIME sy-vline 
WA_ATPC_UNION_STR-OPEN_REQQTY sy-vline 
WA_ATPC_UNION_STR-OPEN_CNFQTY sy-vline 
WA_ATPC_UNION_STR-BASE_UOM sy-vline 
WA_ATPC_UNION_STR-VKORG sy-vline 
WA_ATPC_UNION_STR-VTWEG sy-vline 
WA_ATPC_UNION_STR-SPART sy-vline 
WA_ATPC_UNION_STR-AUART sy-vline 
WA_ATPC_UNION_STR-VSBED sy-vline 
WA_ATPC_UNION_STR-VSTEL sy-vline 
WA_ATPC_UNION_STR-ROUTE sy-vline 
WA_ATPC_UNION_STR-AULWE sy-vline 
WA_ATPC_UNION_STR-PLIFZ sy-vline 
WA_ATPC_UNION_STR-TDDAT sy-vline 
WA_ATPC_UNION_STR-TDUHR sy-vline 
WA_ATPC_UNION_STR-WADAT sy-vline 
WA_ATPC_UNION_STR-WAUHR sy-vline 
WA_ATPC_UNION_STR-LDDAT sy-vline 
WA_ATPC_UNION_STR-LDUHR sy-vline 
WA_ATPC_UNION_STR-ELDAT sy-vline 
WA_ATPC_UNION_STR-ELUHR sy-vline 
WA_ATPC_UNION_STR-DELIVERED_QTY sy-vline 
WA_ATPC_UNION_STR-DELIVERED_QTY_UOM sy-vline 
WA_ATPC_UNION_STR-PLANNING_TYPE sy-vline 
WA_ATPC_UNION_STR-REQ_TYPE sy-vline 
WA_ATPC_UNION_STR-SLINE_DATE sy-vline 
WA_ATPC_UNION_STR-SLINE_TIME sy-vline 
WA_ATPC_UNION_STR-ORDER_QTY sy-vline 
WA_ATPC_UNION_STR-ORDER_QTY_UOM sy-vline 
WA_ATPC_UNION_STR-UVVLK sy-vline 
WA_ATPC_UNION_STR-FSH_CANDATE sy-vline 
WA_ATPC_UNION_STR-PERFORM_SCHEDULING sy-vline 
WA_ATPC_UNION_STR-CREATIONDATE sy-vline 
WA_ATPC_UNION_STR-LASTCHANGEDATE sy-vline 
WA_ATPC_UNION_STR-SUBSTITUTION_STATUS sy-vline 
WA_ATPC_UNION_STR-ORIGINAL_PLANT sy-vline 
WA_ATPC_UNION_STR-SUBSTN_NUMERATOR sy-vline 
WA_ATPC_UNION_STR-SUBSTN_DENOMINATOR sy-vline 
WA_ATPC_UNION_STR-RECEIVING_WERKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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