ABAP Select data from SAP table U_15770 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15770 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_15770. 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_15770 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_15770 TYPE STANDARD TABLE OF U_15770,
      WA_U_15770 TYPE U_15770,
      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_15770> TYPE U_15770.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15770.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15770
  INTO TABLE IT_U_15770.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15770
*  INTO TABLE @DATA(IT_U_157702).
*--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_15770 INDEX 1 INTO DATA(WA_U_157702).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15770 ASSIGNING <U_15770>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15770>-MANDANT = 1.
<U_15770>-CTYP = 1.
<U_15770>-VORLNR = 1.
<U_15770>-VERSION = 1.
<U_15770>-BLOCKNR = 1.

ENDLOOP.

LOOP AT IT_U_15770 INTO WA_U_15770.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15770-MERKMALNR, sy-vline,
  WA_U_15770-SORTNR, sy-vline,
  WA_U_15770-TEXT_ELEM, sy-vline,
  WA_U_15770-KATEGORIE, sy-vline,
  WA_U_15770-ZAEHLER, sy-vline,
  WA_U_15770-MKMNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15770 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_15770 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_15770 INTO WA_U_15770.


*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 VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MKMNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-MKMNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-MKMNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSIONMK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-VERSIONMK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-VERSIONMK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field CMERKMALID
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-CMERKMALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-CMERKMALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASSEINHSW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-MASSEINHSW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-MASSEINHSW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_15770-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15770-SPRACHE.
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_15770_STR, 
MANDANT TYPE STRING,
CTYP TYPE STRING,
VORLNR TYPE STRING,
VERSION TYPE STRING,
BLOCKNR TYPE STRING,
MERKMALNR TYPE STRING,
SORTNR TYPE STRING,
TEXT_ELEM TYPE STRING,
KATEGORIE TYPE STRING,
ZAEHLER TYPE STRING,
MKMNR TYPE STRING,
VERSIONMK TYPE STRING,
CMERKMALID TYPE STRING,
KZHERKWERT TYPE STRING,
KZHERKTEXT TYPE STRING,
KZAUSGFMT TYPE STRING,
KZMETHODE TYPE STRING,
KZESEL TYPE STRING,
KZHERKVG TYPE STRING,
KZSTRSKIP TYPE STRING,
MASSEINHSW TYPE STRING,
AUSGLEN TYPE STRING,
STELLEN TYPE STRING,
KZEXPDS TYPE STRING,
KZOFFSPTX TYPE STRING,
KZOBL TYPE STRING,
SPRACHE TYPE STRING,
KURZTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15770_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_15770_STR-MANDANT sy-vline 
WA_U_15770_STR-CTYP sy-vline 
WA_U_15770_STR-VORLNR sy-vline 
WA_U_15770_STR-VERSION sy-vline 
WA_U_15770_STR-BLOCKNR sy-vline 
WA_U_15770_STR-MERKMALNR sy-vline 
WA_U_15770_STR-SORTNR sy-vline 
WA_U_15770_STR-TEXT_ELEM sy-vline 
WA_U_15770_STR-KATEGORIE sy-vline 
WA_U_15770_STR-ZAEHLER sy-vline 
WA_U_15770_STR-MKMNR sy-vline 
WA_U_15770_STR-VERSIONMK sy-vline 
WA_U_15770_STR-CMERKMALID sy-vline 
WA_U_15770_STR-KZHERKWERT sy-vline 
WA_U_15770_STR-KZHERKTEXT sy-vline 
WA_U_15770_STR-KZAUSGFMT sy-vline 
WA_U_15770_STR-KZMETHODE sy-vline 
WA_U_15770_STR-KZESEL sy-vline 
WA_U_15770_STR-KZHERKVG sy-vline 
WA_U_15770_STR-KZSTRSKIP sy-vline 
WA_U_15770_STR-MASSEINHSW sy-vline 
WA_U_15770_STR-AUSGLEN sy-vline 
WA_U_15770_STR-STELLEN sy-vline 
WA_U_15770_STR-KZEXPDS sy-vline 
WA_U_15770_STR-KZOFFSPTX sy-vline 
WA_U_15770_STR-KZOBL sy-vline 
WA_U_15770_STR-SPRACHE sy-vline 
WA_U_15770_STR-KURZTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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