ABAP Select data from SAP table U_15577 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15577 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_15577. 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_15577 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_15577 TYPE STANDARD TABLE OF U_15577,
      WA_U_15577 TYPE U_15577,
      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_15577> TYPE U_15577.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15577.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15577
  INTO TABLE IT_U_15577.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15577
*  INTO TABLE @DATA(IT_U_155772).
*--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_15577 INDEX 1 INTO DATA(WA_U_155772).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15577 ASSIGNING <U_15577>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15577>-MANDT = 1.
<U_15577>-PKKEY = 1.
<U_15577>-PKNUM = 1.
<U_15577>-PKPOS = 1.
<U_15577>-PKBST = 1.

ENDLOOP.

LOOP AT IT_U_15577 INTO WA_U_15577.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15577-PKIMG, sy-vline,
  WA_U_15577-SAEDT, sy-vline,
  WA_U_15577-SAEUZ, sy-vline,
  WA_U_15577-SADT2, sy-vline,
  WA_U_15577-SAUZ2, sy-vline,
  WA_U_15577-PLNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15577 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_15577 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_15577 INTO WA_U_15577.


*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 PKNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15577-PKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15577-PKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15577-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15577-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15577-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15577-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15577-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15577-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15577-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15577-MBLNR.
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_15577_STR, 
MANDT TYPE STRING,
PKKEY TYPE STRING,
PKNUM TYPE STRING,
PKPOS TYPE STRING,
PKBST TYPE STRING,
PKIMG TYPE STRING,
SAEDT TYPE STRING,
SAEUZ TYPE STRING,
SADT2 TYPE STRING,
SAUZ2 TYPE STRING,
PLNUM TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
BSTYP TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ETENR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
TBNUM TYPE STRING,
TBPOS TYPE STRING,
SPKKZ TYPE STRING,
MBLNR TYPE STRING,
MBLPO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15577_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_15577_STR-MANDT sy-vline 
WA_U_15577_STR-PKKEY sy-vline 
WA_U_15577_STR-PKNUM sy-vline 
WA_U_15577_STR-PKPOS sy-vline 
WA_U_15577_STR-PKBST sy-vline 
WA_U_15577_STR-PKIMG sy-vline 
WA_U_15577_STR-SAEDT sy-vline 
WA_U_15577_STR-SAEUZ sy-vline 
WA_U_15577_STR-SADT2 sy-vline 
WA_U_15577_STR-SAUZ2 sy-vline 
WA_U_15577_STR-PLNUM sy-vline 
WA_U_15577_STR-AUFNR sy-vline 
WA_U_15577_STR-POSNR sy-vline 
WA_U_15577_STR-BSTYP sy-vline 
WA_U_15577_STR-EBELN sy-vline 
WA_U_15577_STR-EBELP sy-vline 
WA_U_15577_STR-ETENR sy-vline 
WA_U_15577_STR-RSNUM sy-vline 
WA_U_15577_STR-RSPOS sy-vline 
WA_U_15577_STR-TBNUM sy-vline 
WA_U_15577_STR-TBPOS sy-vline 
WA_U_15577_STR-SPKKZ sy-vline 
WA_U_15577_STR-MBLNR sy-vline 
WA_U_15577_STR-MBLPO sy-vline      INTO ld_text SEPARATED BY SPACE.

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