ABAP Select data from SAP table ENT7589 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT7589 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 ENT7589. 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 ENT7589 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_ENT7589 TYPE STANDARD TABLE OF ENT7589,
      WA_ENT7589 TYPE ENT7589,
      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: <ENT7589> TYPE ENT7589.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT7589.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT7589
  INTO TABLE IT_ENT7589.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT7589
*  INTO TABLE @DATA(IT_ENT75892).
*--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_ENT7589 INDEX 1 INTO DATA(WA_ENT75892).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT7589 ASSIGNING <ENT7589>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT7589>-MANDT = 1.
<ENT7589>-EINRI = 1.
<ENT7589>-FALNR = 1.
<ENT7589>-LFDNR = 1.
<ENT7589>-BEWTY = 1.

ENDLOOP.

LOOP AT IT_ENT7589 INTO WA_ENT7589.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT7589-BWART, sy-vline,
  WA_ENT7589-BWIDT, sy-vline,
  WA_ENT7589-BWIZT, sy-vline,
  WA_ENT7589-PLANB, sy-vline,
  WA_ENT7589-BWPDT, sy-vline,
  WA_ENT7589-BWPZT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT7589 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_ENT7589 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_ENT7589 INTO WA_ENT7589.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UNFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-UNFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-UNFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WLPRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-WLPRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-WLPRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXTKH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-EXTKH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-EXTKH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UNFRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7589-UNFRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7589-UNFRN.
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_ENT7589_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
LFDNR TYPE STRING,
BEWTY TYPE STRING,
BWART TYPE STRING,
BWIDT TYPE STRING,
BWIZT TYPE STRING,
PLANB TYPE STRING,
BWPDT TYPE STRING,
BWPZT TYPE STRING,
BWEDT TYPE STRING,
BWEZT TYPE STRING,
PLANE TYPE STRING,
LFDREF TYPE STRING,
KZTXT TYPE STRING,
LGTXT TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
NOTKZ TYPE STRING,
UNFKZ TYPE STRING,
UNFNR TYPE STRING,
UNFOR TYPE STRING,
UNFZT TYPE STRING,
UNFDT TYPE STRING,
UNFTX TYPE STRING,
UNLTX TYPE STRING,
WLPRI TYPE STRING,
AUFDS TYPE STRING,
DAUER TYPE STRING,
EXTKH TYPE STRING,
UNFRN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT7589_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_ENT7589_STR-MANDT sy-vline 
WA_ENT7589_STR-EINRI sy-vline 
WA_ENT7589_STR-FALNR sy-vline 
WA_ENT7589_STR-LFDNR sy-vline 
WA_ENT7589_STR-BEWTY sy-vline 
WA_ENT7589_STR-BWART sy-vline 
WA_ENT7589_STR-BWIDT sy-vline 
WA_ENT7589_STR-BWIZT sy-vline 
WA_ENT7589_STR-PLANB sy-vline 
WA_ENT7589_STR-BWPDT sy-vline 
WA_ENT7589_STR-BWPZT sy-vline 
WA_ENT7589_STR-BWEDT sy-vline 
WA_ENT7589_STR-BWEZT sy-vline 
WA_ENT7589_STR-PLANE sy-vline 
WA_ENT7589_STR-LFDREF sy-vline 
WA_ENT7589_STR-KZTXT sy-vline 
WA_ENT7589_STR-LGTXT sy-vline 
WA_ENT7589_STR-ERDAT sy-vline 
WA_ENT7589_STR-ERUSR sy-vline 
WA_ENT7589_STR-UPDAT sy-vline 
WA_ENT7589_STR-UPUSR sy-vline 
WA_ENT7589_STR-STORN sy-vline 
WA_ENT7589_STR-STUSR sy-vline 
WA_ENT7589_STR-STDAT sy-vline 
WA_ENT7589_STR-NOTKZ sy-vline 
WA_ENT7589_STR-UNFKZ sy-vline 
WA_ENT7589_STR-UNFNR sy-vline 
WA_ENT7589_STR-UNFOR sy-vline 
WA_ENT7589_STR-UNFZT sy-vline 
WA_ENT7589_STR-UNFDT sy-vline 
WA_ENT7589_STR-UNFTX sy-vline 
WA_ENT7589_STR-UNLTX sy-vline 
WA_ENT7589_STR-WLPRI sy-vline 
WA_ENT7589_STR-AUFDS sy-vline 
WA_ENT7589_STR-DAUER sy-vline 
WA_ENT7589_STR-EXTKH sy-vline 
WA_ENT7589_STR-UNFRN sy-vline      INTO ld_text SEPARATED BY SPACE.

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