ABAP Select data from SAP table BSATP_REQUIREMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSATP_REQUIREMENT
*  INTO TABLE @DATA(IT_BSATP_REQUIREMENT2).
*--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_BSATP_REQUIREMENT INDEX 1 INTO DATA(WA_BSATP_REQUIREMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSATP_REQUIREMENT>-LVL_TYPE = 1.
<BSATP_REQUIREMENT>-LVL_ID = 1.
<BSATP_REQUIREMENT>-IDX = 1.
<BSATP_REQUIREMENT>-MATNR = 1.
<BSATP_REQUIREMENT>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSATP_REQUIREMENT-BERID, sy-vline,
  WA_BSATP_REQUIREMENT-SOBKZ, sy-vline,
  WA_BSATP_REQUIREMENT-SSKEY, sy-vline,
  WA_BSATP_REQUIREMENT-SSKEY_EXT, sy-vline,
  WA_BSATP_REQUIREMENT-LGORT, sy-vline,
  WA_BSATP_REQUIREMENT-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSATP_REQUIREMENT 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_BSATP_REQUIREMENT 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_BSATP_REQUIREMENT INTO WA_BSATP_REQUIREMENT.


*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 MATNL, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_BSATP_REQUIREMENT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BSATP_REQUIREMENT-MATNR.
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_BSATP_REQUIREMENT_STR, 
LVL_TYPE TYPE STRING,
LVL_ID TYPE STRING,
IDX TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
SOBKZ TYPE STRING,
SSKEY TYPE STRING,
SSKEY_EXT TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
SGT_CATV TYPE STRING,
DUMMY TYPE STRING,
ATPCAT TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
ATPDATEMB TYPE STRING,
ATPTIMEMB TYPE STRING,
REQQTY TYPE STRING,
TRTYP TYPE STRING,
PRREG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSATP_REQUIREMENT_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_BSATP_REQUIREMENT_STR-LVL_TYPE sy-vline 
WA_BSATP_REQUIREMENT_STR-LVL_ID sy-vline 
WA_BSATP_REQUIREMENT_STR-IDX sy-vline 
WA_BSATP_REQUIREMENT_STR-MATNR sy-vline 
WA_BSATP_REQUIREMENT_STR-WERKS sy-vline 
WA_BSATP_REQUIREMENT_STR-BERID sy-vline 
WA_BSATP_REQUIREMENT_STR-SOBKZ sy-vline 
WA_BSATP_REQUIREMENT_STR-SSKEY sy-vline 
WA_BSATP_REQUIREMENT_STR-SSKEY_EXT sy-vline 
WA_BSATP_REQUIREMENT_STR-LGORT sy-vline 
WA_BSATP_REQUIREMENT_STR-CHARG sy-vline 
WA_BSATP_REQUIREMENT_STR-SGT_CATV sy-vline 
WA_BSATP_REQUIREMENT_STR-DUMMY sy-vline 
WA_BSATP_REQUIREMENT_STR-ATPCAT sy-vline 
WA_BSATP_REQUIREMENT_STR-DELNR sy-vline 
WA_BSATP_REQUIREMENT_STR-DELPS sy-vline 
WA_BSATP_REQUIREMENT_STR-DELET sy-vline 
WA_BSATP_REQUIREMENT_STR-ATPDATEMB sy-vline 
WA_BSATP_REQUIREMENT_STR-ATPTIMEMB sy-vline 
WA_BSATP_REQUIREMENT_STR-REQQTY sy-vline 
WA_BSATP_REQUIREMENT_STR-TRTYP sy-vline 
WA_BSATP_REQUIREMENT_STR-PRREG sy-vline      INTO ld_text SEPARATED BY SPACE.

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