ABAP Select data from SAP table GRACREQUSER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRACREQUSER
*  INTO TABLE @DATA(IT_GRACREQUSER2).
*--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_GRACREQUSER INDEX 1 INTO DATA(WA_GRACREQUSER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRACREQUSER>-MANDT = 1.
<GRACREQUSER>-REQ_ID = 1.
<GRACREQUSER>-USERID = 1.
<GRACREQUSER>-FNAME = 1.
<GRACREQUSER>-LNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRACREQUSER-PROVUSER, sy-vline,
  WA_GRACREQUSER-SNC_NAME, sy-vline,
  WA_GRACREQUSER-UNSEC_SNC, sy-vline,
  WA_GRACREQUSER-ACCNO, sy-vline,
  WA_GRACREQUSER-USER_GROUP, sy-vline,
  WA_GRACREQUSER-EMPPOSITION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRACREQUSER 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_GRACREQUSER 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_GRACREQUSER INTO WA_GRACREQUSER.


*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 ISOLA, internal->external for field LOGON_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_GRACREQUSER-LOGON_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRACREQUSER-LOGON_LANGU.
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_GRACREQUSER_STR, 
MANDT TYPE STRING,
REQ_ID TYPE STRING,
USERID TYPE STRING,
FNAME TYPE STRING,
LNAME TYPE STRING,
PROVUSER TYPE STRING,
SNC_NAME TYPE STRING,
UNSEC_SNC TYPE STRING,
ACCNO TYPE STRING,
USER_GROUP TYPE STRING,
EMPPOSITION TYPE STRING,
EMPJOB TYPE STRING,
PERSONNELNO TYPE STRING,
PERSONNELAREA TYPE STRING,
EMPTYPE TYPE STRING,
EMAIL TYPE STRING,
BUSINESS_AREA TYPE STRING,
FUNCTIONAL_AREA TYPE STRING,
ACADEMIC_TITLE TYPE STRING,
USERALIAS TYPE STRING,
USER_TYPE TYPE STRING,
START_MENU TYPE STRING,
LOGON_LANGU TYPE STRING,
DEC_NOTATION TYPE STRING,
DATE_FORMAT TYPE STRING,
TIME_ZONE TYPE STRING,
LIC_TYPE TYPE STRING,
MANAGER TYPE STRING,
FUNCTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRACREQUSER_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_GRACREQUSER_STR-MANDT sy-vline 
WA_GRACREQUSER_STR-REQ_ID sy-vline 
WA_GRACREQUSER_STR-USERID sy-vline 
WA_GRACREQUSER_STR-FNAME sy-vline 
WA_GRACREQUSER_STR-LNAME sy-vline 
WA_GRACREQUSER_STR-PROVUSER sy-vline 
WA_GRACREQUSER_STR-SNC_NAME sy-vline 
WA_GRACREQUSER_STR-UNSEC_SNC sy-vline 
WA_GRACREQUSER_STR-ACCNO sy-vline 
WA_GRACREQUSER_STR-USER_GROUP sy-vline 
WA_GRACREQUSER_STR-EMPPOSITION sy-vline 
WA_GRACREQUSER_STR-EMPJOB sy-vline 
WA_GRACREQUSER_STR-PERSONNELNO sy-vline 
WA_GRACREQUSER_STR-PERSONNELAREA sy-vline 
WA_GRACREQUSER_STR-EMPTYPE sy-vline 
WA_GRACREQUSER_STR-EMAIL sy-vline 
WA_GRACREQUSER_STR-BUSINESS_AREA sy-vline 
WA_GRACREQUSER_STR-FUNCTIONAL_AREA sy-vline 
WA_GRACREQUSER_STR-ACADEMIC_TITLE sy-vline 
WA_GRACREQUSER_STR-USERALIAS sy-vline 
WA_GRACREQUSER_STR-USER_TYPE sy-vline 
WA_GRACREQUSER_STR-START_MENU sy-vline 
WA_GRACREQUSER_STR-LOGON_LANGU sy-vline 
WA_GRACREQUSER_STR-DEC_NOTATION sy-vline 
WA_GRACREQUSER_STR-DATE_FORMAT sy-vline 
WA_GRACREQUSER_STR-TIME_ZONE sy-vline 
WA_GRACREQUSER_STR-LIC_TYPE sy-vline 
WA_GRACREQUSER_STR-MANAGER sy-vline 
WA_GRACREQUSER_STR-FUNCTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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