ABAP Select data from SAP table MPO_AC_LIST_LEASING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPO_AC_LIST_LEASING
*  INTO TABLE @DATA(IT_MPO_AC_LIST_LEASING2).
*--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_MPO_AC_LIST_LEASING INDEX 1 INTO DATA(WA_MPO_AC_LIST_LEASING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPO_AC_LIST_LEASING>-LEAFI = 1.
<MPO_AC_LIST_LEASING>-LVDAT = 1.
<MPO_AC_LIST_LEASING>-LKDAT = 1.
<MPO_AC_LIST_LEASING>-LEABG = 1.
<MPO_AC_LIST_LEASING>-LEJAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPO_AC_LIST_LEASING-LEPER, sy-vline,
  WA_MPO_AC_LIST_LEASING-LRYTH, sy-vline,
  WA_MPO_AC_LIST_LEASING-LEGEB, sy-vline,
  WA_MPO_AC_LIST_LEASING-LBASW, sy-vline,
  WA_MPO_AC_LIST_LEASING-LKAUF, sy-vline,
  WA_MPO_AC_LIST_LEASING-LZINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPO_AC_LIST_LEASING 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_MPO_AC_LIST_LEASING 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_MPO_AC_LIST_LEASING INTO WA_MPO_AC_LIST_LEASING.


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

*Conversion exit AC132, internal->external for field LEGEB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_MPO_AC_LIST_LEASING-LEGEB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_AC_LIST_LEASING-LEGEB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field LBASW
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_MPO_AC_LIST_LEASING-LBASW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_AC_LIST_LEASING-LBASW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field LKAUF
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_MPO_AC_LIST_LEASING-LKAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_AC_LIST_LEASING-LKAUF.
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_MPO_AC_LIST_LEASING_STR, 
LEAFI TYPE STRING,
LVDAT TYPE STRING,
LKDAT TYPE STRING,
LEABG TYPE STRING,
LEJAR TYPE STRING,
LEPER TYPE STRING,
LRYTH TYPE STRING,
LEGEB TYPE STRING,
LBASW TYPE STRING,
LKAUF TYPE STRING,
LZINS TYPE STRING,
LEANZ TYPE STRING,
LVTNR TYPE STRING,
LETXT TYPE STRING,
LEART TYPE STRING,
LVORS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPO_AC_LIST_LEASING_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_MPO_AC_LIST_LEASING_STR-LEAFI sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LVDAT sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LKDAT sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEABG sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEJAR sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEPER sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LRYTH sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEGEB sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LBASW sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LKAUF sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LZINS sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEANZ sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LVTNR sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LETXT sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LEART sy-vline 
WA_MPO_AC_LIST_LEASING_STR-LVORS sy-vline      INTO ld_text SEPARATED BY SPACE.

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