ABAP Select data from SAP table /SAPAPO/OM_ATP_TMAXSETUP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/OM_ATP_TMAXSETUP
*  INTO TABLE @DATA(IT_/SAPAPO/OM_ATP_TMAXSETUP2).
*--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_/SAPAPO/OM_ATP_TMAXSETUP INDEX 1 INTO DATA(WA_/SAPAPO/OM_ATP_TMAXSETUP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/OM_ATP_TMAXSETUP>-CAT = 1.
</SAPAPO/OM_ATP_TMAXSETUP>-SUBLOC = 1.
</SAPAPO/OM_ATP_TMAXSETUP>-VERSION = 1.
</SAPAPO/OM_ATP_TMAXSETUP>-CATTYP = 1.
</SAPAPO/OM_ATP_TMAXSETUP>-CHARKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/OM_ATP_TMAXSETUP-DURATION, sy-vline,
  WA_/SAPAPO/OM_ATP_TMAXSETUP-DELNR, sy-vline,
  WA_/SAPAPO/OM_ATP_TMAXSETUP-DELPS, sy-vline,
  WA_/SAPAPO/OM_ATP_TMAXSETUP-DELET, sy-vline,
  WA_/SAPAPO/OM_ATP_TMAXSETUP-TMOLD, sy-vline,
  WA_/SAPAPO/OM_ATP_TMAXSETUP-TMNEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/OM_ATP_TMAXSETUP 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_/SAPAPO/OM_ATP_TMAXSETUP 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_/SAPAPO/OM_ATP_TMAXSETUP INTO WA_/SAPAPO/OM_ATP_TMAXSETUP.


*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 TSTPS, internal->external for field TMOLD
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/OM_ATP_TMAXSETUP-TMOLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/OM_ATP_TMAXSETUP-TMOLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field TMNEW
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/OM_ATP_TMAXSETUP-TMNEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/OM_ATP_TMAXSETUP-TMNEW.
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_/SAPAPO/OM_ATP_TMAXSETUP_STR, 
CAT TYPE STRING,
SUBLOC TYPE STRING,
VERSION TYPE STRING,
CATTYP TYPE STRING,
CHARKEY TYPE STRING,
DURATION TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
TMOLD TYPE STRING,
TMNEW TYPE STRING,
OQTYOLD TYPE STRING,
OQTYNEW TYPE STRING,
CQTYOLD TYPE STRING,
CQTYNEW TYPE STRING,
UPDMODE TYPE STRING,
REALQTYOLD TYPE STRING,
REALQTYNEW TYPE STRING,
ORIGQTYOLD TYPE STRING,
ORIGQTYNEW TYPE STRING,
ORDERSTATUSOLD TYPE STRING,
ORDERSTATUSNEW TYPE STRING,
DESCCHARIDOLD TYPE STRING,
DESCCHARIDNEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/OM_ATP_TMAXSETUP_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_/SAPAPO/OM_ATP_TMAXSETUP_STR-CAT sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-SUBLOC sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-VERSION sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-CATTYP sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-CHARKEY sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DURATION sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DELNR sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DELPS sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DELET sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-TMOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-TMNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-OQTYOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-OQTYNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-CQTYOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-CQTYNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-UPDMODE sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-REALQTYOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-REALQTYNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-ORIGQTYOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-ORIGQTYNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-ORDERSTATUSOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-ORDERSTATUSNEW sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DESCCHARIDOLD sy-vline 
WA_/SAPAPO/OM_ATP_TMAXSETUP_STR-DESCCHARIDNEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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