ABAP Select data from SAP table ENT2159 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT2159 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 ENT2159. 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 ENT2159 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_ENT2159 TYPE STANDARD TABLE OF ENT2159,
      WA_ENT2159 TYPE ENT2159,
      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: <ENT2159> TYPE ENT2159.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT2159.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT2159
  INTO TABLE IT_ENT2159.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT2159
*  INTO TABLE @DATA(IT_ENT21592).
*--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_ENT2159 INDEX 1 INTO DATA(WA_ENT21592).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT2159 ASSIGNING <ENT2159>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT2159>-MANDT = 1.
<ENT2159>-KKBER = 1.
<ENT2159>-CTLPC = 1.
<ENT2159>-CRMGR = 1.
<ENT2159>-SPRAS = 1.

ENDLOOP.

LOOP AT IT_ENT2159 INTO WA_ENT2159.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT2159-PRBEZ, sy-vline,
  WA_ENT2159-CRDBI, sy-vline,
  WA_ENT2159-CRPRC, sy-vline,
  WA_ENT2159-CRCRE, sy-vline,
  WA_ENT2159-DKLIM, sy-vline,
  WA_ENT2159-SEAAF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT2159 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_ENT2159 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_ENT2159 INTO WA_ENT2159.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2159-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2159-SPRAS.
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_ENT2159_STR, 
MANDT TYPE STRING,
KKBER TYPE STRING,
CTLPC TYPE STRING,
CRMGR TYPE STRING,
SPRAS TYPE STRING,
PRBEZ TYPE STRING,
CRDBI TYPE STRING,
CRPRC TYPE STRING,
CRCRE TYPE STRING,
DKLIM TYPE STRING,
SEAAF TYPE STRING,
TAGEF TYPE STRING,
CMPAA TYPE STRING,
STVAW TYPE STRING,
STVLW TYPE STRING,
STREA TYPE STRING,
STSET TYPE STRING,
CMPAB TYPE STRING,
WOVLW TYPE STRING,
WSWIN TYPE STRING,
WSREA TYPE STRING,
WLSET TYPE STRING,
CMPAC TYPE STRING,
MAVAL TYPE STRING,
MAREA TYPE STRING,
MASET TYPE STRING,
CMPAD TYPE STRING,
FSREA TYPE STRING,
FSSET TYPE STRING,
CMPAE TYPE STRING,
RVTOL TYPE STRING,
RSREA TYPE STRING,
RESET TYPE STRING,
CMPAF TYPE STRING,
PDMAX TYPE STRING,
PDTOL TYPE STRING,
PDREA TYPE STRING,
PDSET TYPE STRING,
CMPAG TYPE STRING,
OITOL TYPE STRING,
OIREA TYPE STRING,
OISET TYPE STRING,
CMPAH TYPE STRING,
DUNNG TYPE STRING,
DNREA TYPE STRING,
DNSET TYPE STRING,
CMPAI TYPE STRING,
SPVAL TYPE STRING,
SPREA TYPE STRING,
SPSET TYPE STRING,
CMPAJ TYPE STRING,
PJREA TYPE STRING,
PJSET TYPE STRING,
CMPAK TYPE STRING,
PKREA TYPE STRING,
PKSET TYPE STRING,
CMPAL TYPE STRING,
PLREA TYPE STRING,
PLSET TYPE STRING,
USRPR0 TYPE STRING,
USR0REA TYPE STRING,
USR0SET TYPE STRING,
USRPR1 TYPE STRING,
USR1REA TYPE STRING,
USR1SET TYPE STRING,
USRPR2 TYPE STRING,
USR2REA TYPE STRING,
USR2SET TYPE STRING,
CECKI TYPE STRING,
REGUL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT2159_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_ENT2159_STR-MANDT sy-vline 
WA_ENT2159_STR-KKBER sy-vline 
WA_ENT2159_STR-CTLPC sy-vline 
WA_ENT2159_STR-CRMGR sy-vline 
WA_ENT2159_STR-SPRAS sy-vline 
WA_ENT2159_STR-PRBEZ sy-vline 
WA_ENT2159_STR-CRDBI sy-vline 
WA_ENT2159_STR-CRPRC sy-vline 
WA_ENT2159_STR-CRCRE sy-vline 
WA_ENT2159_STR-DKLIM sy-vline 
WA_ENT2159_STR-SEAAF sy-vline 
WA_ENT2159_STR-TAGEF sy-vline 
WA_ENT2159_STR-CMPAA sy-vline 
WA_ENT2159_STR-STVAW sy-vline 
WA_ENT2159_STR-STVLW sy-vline 
WA_ENT2159_STR-STREA sy-vline 
WA_ENT2159_STR-STSET sy-vline 
WA_ENT2159_STR-CMPAB sy-vline 
WA_ENT2159_STR-WOVLW sy-vline 
WA_ENT2159_STR-WSWIN sy-vline 
WA_ENT2159_STR-WSREA sy-vline 
WA_ENT2159_STR-WLSET sy-vline 
WA_ENT2159_STR-CMPAC sy-vline 
WA_ENT2159_STR-MAVAL sy-vline 
WA_ENT2159_STR-MAREA sy-vline 
WA_ENT2159_STR-MASET sy-vline 
WA_ENT2159_STR-CMPAD sy-vline 
WA_ENT2159_STR-FSREA sy-vline 
WA_ENT2159_STR-FSSET sy-vline 
WA_ENT2159_STR-CMPAE sy-vline 
WA_ENT2159_STR-RVTOL sy-vline 
WA_ENT2159_STR-RSREA sy-vline 
WA_ENT2159_STR-RESET sy-vline 
WA_ENT2159_STR-CMPAF sy-vline 
WA_ENT2159_STR-PDMAX sy-vline 
WA_ENT2159_STR-PDTOL sy-vline 
WA_ENT2159_STR-PDREA sy-vline 
WA_ENT2159_STR-PDSET sy-vline 
WA_ENT2159_STR-CMPAG sy-vline 
WA_ENT2159_STR-OITOL sy-vline 
WA_ENT2159_STR-OIREA sy-vline 
WA_ENT2159_STR-OISET sy-vline 
WA_ENT2159_STR-CMPAH sy-vline 
WA_ENT2159_STR-DUNNG sy-vline 
WA_ENT2159_STR-DNREA sy-vline 
WA_ENT2159_STR-DNSET sy-vline 
WA_ENT2159_STR-CMPAI sy-vline 
WA_ENT2159_STR-SPVAL sy-vline 
WA_ENT2159_STR-SPREA sy-vline 
WA_ENT2159_STR-SPSET sy-vline 
WA_ENT2159_STR-CMPAJ sy-vline 
WA_ENT2159_STR-PJREA sy-vline 
WA_ENT2159_STR-PJSET sy-vline 
WA_ENT2159_STR-CMPAK sy-vline 
WA_ENT2159_STR-PKREA sy-vline 
WA_ENT2159_STR-PKSET sy-vline 
WA_ENT2159_STR-CMPAL sy-vline 
WA_ENT2159_STR-PLREA sy-vline 
WA_ENT2159_STR-PLSET sy-vline 
WA_ENT2159_STR-USRPR0 sy-vline 
WA_ENT2159_STR-USR0REA sy-vline 
WA_ENT2159_STR-USR0SET sy-vline 
WA_ENT2159_STR-USRPR1 sy-vline 
WA_ENT2159_STR-USR1REA sy-vline 
WA_ENT2159_STR-USR1SET sy-vline 
WA_ENT2159_STR-USRPR2 sy-vline 
WA_ENT2159_STR-USR2REA sy-vline 
WA_ENT2159_STR-USR2SET sy-vline 
WA_ENT2159_STR-CECKI sy-vline 
WA_ENT2159_STR-REGUL sy-vline      INTO ld_text SEPARATED BY SPACE.

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