ABAP Select data from SAP table ATPCS_S4_FOR_ATP_GROUPS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ATPCS_S4_FOR_ATP_GROUPS 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 ATPCS_S4_FOR_ATP_GROUPS. 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 ATPCS_S4_FOR_ATP_GROUPS 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_ATPCS_S4_FOR_ATP_GROUPS TYPE STANDARD TABLE OF ATPCS_S4_FOR_ATP_GROUPS,
      WA_ATPCS_S4_FOR_ATP_GROUPS TYPE ATPCS_S4_FOR_ATP_GROUPS,
      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: <ATPCS_S4_FOR_ATP_GROUPS> TYPE ATPCS_S4_FOR_ATP_GROUPS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ATPCS_S4_FOR_ATP_GROUPS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ATPCS_S4_FOR_ATP_GROUPS
  INTO TABLE IT_ATPCS_S4_FOR_ATP_GROUPS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATPCS_S4_FOR_ATP_GROUPS
*  INTO TABLE @DATA(IT_ATPCS_S4_FOR_ATP_GROUPS2).
*--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_ATPCS_S4_FOR_ATP_GROUPS INDEX 1 INTO DATA(WA_ATPCS_S4_FOR_ATP_GROUPS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ATPCS_S4_FOR_ATP_GROUPS ASSIGNING <ATPCS_S4_FOR_ATP_GROUPS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATPCS_S4_FOR_ATP_GROUPS>-MANDT = 1.
<ATPCS_S4_FOR_ATP_GROUPS>-MATNR = 1.
<ATPCS_S4_FOR_ATP_GROUPS>-WERKS = 1.
<ATPCS_S4_FOR_ATP_GROUPS>-LGORT = 1.
<ATPCS_S4_FOR_ATP_GROUPS>-BERID = 1.

ENDLOOP.

LOOP AT IT_ATPCS_S4_FOR_ATP_GROUPS INTO WA_ATPCS_S4_FOR_ATP_GROUPS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATPCS_S4_FOR_ATP_GROUPS-SOBKZ, sy-vline,
  WA_ATPCS_S4_FOR_ATP_GROUPS-SSKEY, sy-vline,
  WA_ATPCS_S4_FOR_ATP_GROUPS-SSKEY_EXT, sy-vline,
  WA_ATPCS_S4_FOR_ATP_GROUPS-CHARG, sy-vline,
  WA_ATPCS_S4_FOR_ATP_GROUPS-SGT_CATV, sy-vline,
  WA_ATPCS_S4_FOR_ATP_GROUPS-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATPCS_S4_FOR_ATP_GROUPS 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_ATPCS_S4_FOR_ATP_GROUPS 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_ATPCS_S4_FOR_ATP_GROUPS INTO WA_ATPCS_S4_FOR_ATP_GROUPS.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ATPCS_S4_FOR_ATP_GROUPS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATPCS_S4_FOR_ATP_GROUPS-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATPCS_S4_FOR_ATP_GROUPS-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATPCS_S4_FOR_ATP_GROUPS-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATPCS_S4_FOR_ATP_GROUPS-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATPCS_S4_FOR_ATP_GROUPS-BASE_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_ATPCS_S4_FOR_ATP_GROUPS_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
BERID TYPE STRING,
SOBKZ TYPE STRING,
SSKEY TYPE STRING,
SSKEY_EXT TYPE STRING,
CHARG TYPE STRING,
SGT_CATV TYPE STRING,
LIFNR TYPE STRING,
MTVFP TYPE STRING,
PRREG TYPE STRING,
RESMD TYPE STRING,
TRTYP TYPE STRING,
XLINE TYPE STRING,
YLINE TYPE STRING,
SORT_ORD TYPE STRING,
REL_DBSTATE_ORDER TYPE STRING,
STRUCIND TYPE STRING,
REQUIREMENT_POSTING_STATUS TYPE STRING,
FIXMG TYPE STRING,
ATPCAT TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
SUBITEM TYPE STRING,
DELET TYPE STRING,
REQDATE TYPE STRING,
REQQTY TYPE STRING,
ATOMIC_QTY_SIZE TYPE STRING,
REQQTY_IN_COMMON_BASE_UNIT TYPE STRING,
ENMNG TYPE STRING,
BASE_UOM TYPE STRING,
TLINE TYPE STRING,
ALLOCATED_QTY TYPE STRING,
SUBSTN_NUMERATOR TYPE STRING,
SUBSTN_DENOMINATOR TYPE STRING,
SUBSTN_LEAST_COMMON_MULTIPLE TYPE STRING,
ERROR TYPE STRING,
PAC_RELEVANT TYPE STRING,
PAL_RELEVANT TYPE STRING,
ARUN_RELEVANT TYPE STRING,
SUPPLY_PROTECTION_RELEVANT TYPE STRING,
DLV_WERKS TYPE STRING,
ABC_STATUS TYPE STRING,
ORIGINAL_PLANT TYPE STRING,
CONSIDER_ALTERNATIVES TYPE STRING,
SUBSTN_SEQUENCE_NUMBER TYPE STRING,
DEACTIVATE_ABC TYPE STRING,
FORBID_INLINE_SUBSTITUTION TYPE STRING,
FORBID_SUBITEM_GENERATION TYPE STRING,
ENFORCE_SUBITEM_GENERATION TYPE STRING,
WITHDRAWN_QTY TYPE STRING,
BOM_FACTOR TYPE STRING,
USAGE_PERCENTAGE TYPE STRING,
XLINE_OF_DISCONTINUED_MAT TYPE STRING,
FABKL TYPE STRING,
NUMBER_OF_DECIMALS TYPE STRING,
REQTIME TYPE STRING,
GROUP_INTERNAL TYPE STRING,
SUBGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATPCS_S4_FOR_ATP_GROUPS_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_ATPCS_S4_FOR_ATP_GROUPS_STR-MANDT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-MATNR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-WERKS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-LGORT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-BERID sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SOBKZ sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SSKEY sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SSKEY_EXT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-CHARG sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SGT_CATV sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-LIFNR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-MTVFP sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-PRREG sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-RESMD sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-TRTYP sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-XLINE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-YLINE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SORT_ORD sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REL_DBSTATE_ORDER sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-STRUCIND sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REQUIREMENT_POSTING_STATUS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-FIXMG sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ATPCAT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-DELNR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-DELPS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBITEM sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-DELET sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REQDATE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REQQTY sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ATOMIC_QTY_SIZE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REQQTY_IN_COMMON_BASE_UNIT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ENMNG sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-BASE_UOM sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-TLINE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ALLOCATED_QTY sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBSTN_NUMERATOR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBSTN_DENOMINATOR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBSTN_LEAST_COMMON_MULTIPLE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ERROR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-PAC_RELEVANT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-PAL_RELEVANT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ARUN_RELEVANT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUPPLY_PROTECTION_RELEVANT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-DLV_WERKS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ABC_STATUS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ORIGINAL_PLANT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-CONSIDER_ALTERNATIVES sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBSTN_SEQUENCE_NUMBER sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-DEACTIVATE_ABC sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-FORBID_INLINE_SUBSTITUTION sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-FORBID_SUBITEM_GENERATION sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-ENFORCE_SUBITEM_GENERATION sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-WITHDRAWN_QTY sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-BOM_FACTOR sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-USAGE_PERCENTAGE sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-XLINE_OF_DISCONTINUED_MAT sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-FABKL sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-NUMBER_OF_DECIMALS sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-REQTIME sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-GROUP_INTERNAL sy-vline 
WA_ATPCS_S4_FOR_ATP_GROUPS_STR-SUBGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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