ABAP Select data from SAP table U_15621 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15621 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 U_15621. 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 U_15621 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_U_15621 TYPE STANDARD TABLE OF U_15621,
      WA_U_15621 TYPE U_15621,
      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: <U_15621> TYPE U_15621.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15621.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15621
  INTO TABLE IT_U_15621.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15621
*  INTO TABLE @DATA(IT_U_156212).
*--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_U_15621 INDEX 1 INTO DATA(WA_U_156212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15621 ASSIGNING <U_15621>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15621>-MANDT = 1.
<U_15621>-POINT = 1.
<U_15621>-MPOBJ = 1.
<U_15621>-PSORT = 1.
<U_15621>-PTTXT = 1.

ENDLOOP.

LOOP AT IT_U_15621 INTO WA_U_15621.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15621-MLANG, sy-vline,
  WA_U_15621-KZLTX, sy-vline,
  WA_U_15621-MPTYP, sy-vline,
  WA_U_15621-ERDAT, sy-vline,
  WA_U_15621-ERNAM, sy-vline,
  WA_U_15621-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15621 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_U_15621 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_U_15621 INTO WA_U_15621.


*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 POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-POINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-MLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-MLANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field LOCAS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-LOCAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-LOCAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MRNGU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-MRNGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-MRNGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TRANS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15621-TRANS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15621-TRANS.
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_U_15621_STR, 
MANDT TYPE STRING,
POINT TYPE STRING,
MPOBJ TYPE STRING,
PSORT TYPE STRING,
PTTXT TYPE STRING,
MLANG TYPE STRING,
KZLTX TYPE STRING,
MPTYP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
INACT TYPE STRING,
LVORM TYPE STRING,
LOCAS TYPE STRING,
ATINN TYPE STRING,
EXPON TYPE STRING,
DECIM TYPE STRING,
DESIR TYPE STRING,
DESIRI TYPE STRING,
DSTXT TYPE STRING,
MRMIN TYPE STRING,
MRMINI TYPE STRING,
MRMAX TYPE STRING,
MRMAXI TYPE STRING,
MRNGU TYPE STRING,
INDCT TYPE STRING,
INDRV TYPE STRING,
INDTR TYPE STRING,
TRANS TYPE STRING,
CODCT TYPE STRING,
CODGR TYPE STRING,
CDSUF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15621_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_U_15621_STR-MANDT sy-vline 
WA_U_15621_STR-POINT sy-vline 
WA_U_15621_STR-MPOBJ sy-vline 
WA_U_15621_STR-PSORT sy-vline 
WA_U_15621_STR-PTTXT sy-vline 
WA_U_15621_STR-MLANG sy-vline 
WA_U_15621_STR-KZLTX sy-vline 
WA_U_15621_STR-MPTYP sy-vline 
WA_U_15621_STR-ERDAT sy-vline 
WA_U_15621_STR-ERNAM sy-vline 
WA_U_15621_STR-AEDAT sy-vline 
WA_U_15621_STR-AENAM sy-vline 
WA_U_15621_STR-BEGRU sy-vline 
WA_U_15621_STR-INACT sy-vline 
WA_U_15621_STR-LVORM sy-vline 
WA_U_15621_STR-LOCAS sy-vline 
WA_U_15621_STR-ATINN sy-vline 
WA_U_15621_STR-EXPON sy-vline 
WA_U_15621_STR-DECIM sy-vline 
WA_U_15621_STR-DESIR sy-vline 
WA_U_15621_STR-DESIRI sy-vline 
WA_U_15621_STR-DSTXT sy-vline 
WA_U_15621_STR-MRMIN sy-vline 
WA_U_15621_STR-MRMINI sy-vline 
WA_U_15621_STR-MRMAX sy-vline 
WA_U_15621_STR-MRMAXI sy-vline 
WA_U_15621_STR-MRNGU sy-vline 
WA_U_15621_STR-INDCT sy-vline 
WA_U_15621_STR-INDRV sy-vline 
WA_U_15621_STR-INDTR sy-vline 
WA_U_15621_STR-TRANS sy-vline 
WA_U_15621_STR-CODCT sy-vline 
WA_U_15621_STR-CODGR sy-vline 
WA_U_15621_STR-CDSUF sy-vline      INTO ld_text SEPARATED BY SPACE.

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