ABAP Select data from SAP table MEPO1320 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MEPO1320 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 MEPO1320. 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 MEPO1320 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_MEPO1320 TYPE STANDARD TABLE OF MEPO1320,
      WA_MEPO1320 TYPE MEPO1320,
      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: <MEPO1320> TYPE MEPO1320.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MEPO1320.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MEPO1320
  INTO TABLE IT_MEPO1320.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEPO1320
*  INTO TABLE @DATA(IT_MEPO13202).
*--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_MEPO1320 INDEX 1 INTO DATA(WA_MEPO13202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MEPO1320 ASSIGNING <MEPO1320>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEPO1320>-ELPEI = 1.
<MEPO1320>-EEIND = 1.
<MEPO1320>-MENGE = 1.
<MEPO1320>-UZEIT = 1.
<MEPO1320>-SLFDT = 1.

ENDLOOP.

LOOP AT IT_MEPO1320 INTO WA_MEPO1320.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEPO1320-BANFN, sy-vline,
  WA_MEPO1320-BNFPO, sy-vline,
  WA_MEPO1320-WEMNG, sy-vline,
  WA_MEPO1320-MAHNZ, sy-vline,
  WA_MEPO1320-OBMNG, sy-vline,
  WA_MEPO1320-MNG02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEPO1320 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_MEPO1320 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_MEPO1320 INTO WA_MEPO1320.


*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 BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1320-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1320-BANFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1320-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1320-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MEPO1320-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPO1320-MEINS.
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_MEPO1320_STR, 
ELPEI TYPE STRING,
EEIND TYPE STRING,
MENGE TYPE STRING,
UZEIT TYPE STRING,
SLFDT TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
WEMNG TYPE STRING,
MAHNZ TYPE STRING,
OBMNG TYPE STRING,
MNG02 TYPE STRING,
ETENR TYPE STRING,
WAMNG TYPE STRING,
GLMNG TYPE STRING,
DAT01 TYPE STRING,
MBDAT TYPE STRING,
MBUHR TYPE STRING,
TDDAT TYPE STRING,
TDUHR TYPE STRING,
LDDAT TYPE STRING,
LDUHR TYPE STRING,
WADAT TYPE STRING,
WAUHR TYPE STRING,
AULWE TYPE STRING,
ELDAT TYPE STRING,
ELUHR TYPE STRING,
GEO_ROUTE TYPE STRING,
HANDOVERDATE TYPE STRING,
HANDOVERTIME TYPE STRING,
FSH_OS_ID TYPE STRING,
FSH_UBMENG TYPE STRING,
TCSELFLAG TYPE STRING,
STATUSICON TYPE STRING,
SELFLAG TYPE STRING,
CHANGED TYPE STRING,
LOEKZ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LPEIN TYPE STRING,
EINDT TYPE STRING,
MEINS TYPE STRING,
HANDLE TYPE STRING,
REQ_CLOSED TYPE STRING,
SN_BUTTON_TOGG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEPO1320_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_MEPO1320_STR-ELPEI sy-vline 
WA_MEPO1320_STR-EEIND sy-vline 
WA_MEPO1320_STR-MENGE sy-vline 
WA_MEPO1320_STR-UZEIT sy-vline 
WA_MEPO1320_STR-SLFDT sy-vline 
WA_MEPO1320_STR-BANFN sy-vline 
WA_MEPO1320_STR-BNFPO sy-vline 
WA_MEPO1320_STR-WEMNG sy-vline 
WA_MEPO1320_STR-MAHNZ sy-vline 
WA_MEPO1320_STR-OBMNG sy-vline 
WA_MEPO1320_STR-MNG02 sy-vline 
WA_MEPO1320_STR-ETENR sy-vline 
WA_MEPO1320_STR-WAMNG sy-vline 
WA_MEPO1320_STR-GLMNG sy-vline 
WA_MEPO1320_STR-DAT01 sy-vline 
WA_MEPO1320_STR-MBDAT sy-vline 
WA_MEPO1320_STR-MBUHR sy-vline 
WA_MEPO1320_STR-TDDAT sy-vline 
WA_MEPO1320_STR-TDUHR sy-vline 
WA_MEPO1320_STR-LDDAT sy-vline 
WA_MEPO1320_STR-LDUHR sy-vline 
WA_MEPO1320_STR-WADAT sy-vline 
WA_MEPO1320_STR-WAUHR sy-vline 
WA_MEPO1320_STR-AULWE sy-vline 
WA_MEPO1320_STR-ELDAT sy-vline 
WA_MEPO1320_STR-ELUHR sy-vline 
WA_MEPO1320_STR-GEO_ROUTE sy-vline 
WA_MEPO1320_STR-HANDOVERDATE sy-vline 
WA_MEPO1320_STR-HANDOVERTIME sy-vline 
WA_MEPO1320_STR-FSH_OS_ID sy-vline 
WA_MEPO1320_STR-FSH_UBMENG sy-vline 
WA_MEPO1320_STR-TCSELFLAG sy-vline 
WA_MEPO1320_STR-STATUSICON sy-vline 
WA_MEPO1320_STR-SELFLAG sy-vline 
WA_MEPO1320_STR-CHANGED sy-vline 
WA_MEPO1320_STR-LOEKZ sy-vline 
WA_MEPO1320_STR-EBELN sy-vline 
WA_MEPO1320_STR-EBELP sy-vline 
WA_MEPO1320_STR-LPEIN sy-vline 
WA_MEPO1320_STR-EINDT sy-vline 
WA_MEPO1320_STR-MEINS sy-vline 
WA_MEPO1320_STR-HANDLE sy-vline 
WA_MEPO1320_STR-REQ_CLOSED sy-vline 
WA_MEPO1320_STR-SN_BUTTON_TOGG sy-vline      INTO ld_text SEPARATED BY SPACE.

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