ABAP Select data from SAP table U_22521 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_22521 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_22521. 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_22521 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_22521 TYPE STANDARD TABLE OF U_22521,
      WA_U_22521 TYPE U_22521,
      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_22521> TYPE U_22521.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_22521.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_22521
  INTO TABLE IT_U_22521.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_22521
*  INTO TABLE @DATA(IT_U_225212).
*--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_22521 INDEX 1 INTO DATA(WA_U_225212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_22521 ASSIGNING <U_22521>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_22521>-MANDT = 1.
<U_22521>-SGRUNDB = 1.
<U_22521>-SNRABT1 = 1.
<U_22521>-DBVORM = 1.
<U_22521>-DAUFLVOR = 1.

ENDLOOP.

LOOP AT IT_U_22521 INTO WA_U_22521.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_22521-DBAUFL, sy-vline,
  WA_U_22521-DAUFLASS, sy-vline,
  WA_U_22521-JLOESCH, sy-vline,
  WA_U_22521-JKZLOE, sy-vline,
  WA_U_22521-XGRSTLST, sy-vline,
  WA_U_22521-XEIGTLST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_22521 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_22521 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_22521 INTO WA_U_22521.


*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 XNRA1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_22521-XNRA1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_22521-XNRA1.
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_22521_STR, 
MANDT TYPE STRING,
SGRUNDB TYPE STRING,
SNRABT1 TYPE STRING,
DBVORM TYPE STRING,
DAUFLVOR TYPE STRING,
DBAUFL TYPE STRING,
DAUFLASS TYPE STRING,
JLOESCH TYPE STRING,
JKZLOE TYPE STRING,
XGRSTLST TYPE STRING,
XEIGTLST TYPE STRING,
RGRSTLST TYPE STRING,
REIGTLST TYPE STRING,
XNRA1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_22521_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_22521_STR-MANDT sy-vline 
WA_U_22521_STR-SGRUNDB sy-vline 
WA_U_22521_STR-SNRABT1 sy-vline 
WA_U_22521_STR-DBVORM sy-vline 
WA_U_22521_STR-DAUFLVOR sy-vline 
WA_U_22521_STR-DBAUFL sy-vline 
WA_U_22521_STR-DAUFLASS sy-vline 
WA_U_22521_STR-JLOESCH sy-vline 
WA_U_22521_STR-JKZLOE sy-vline 
WA_U_22521_STR-XGRSTLST sy-vline 
WA_U_22521_STR-XEIGTLST sy-vline 
WA_U_22521_STR-RGRSTLST sy-vline 
WA_U_22521_STR-REIGTLST sy-vline 
WA_U_22521_STR-XNRA1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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