ABAP Select data from SAP table RELULBCHECK2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RELULBCHECK2 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 RELULBCHECK2. 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 RELULBCHECK2 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_RELULBCHECK2 TYPE STANDARD TABLE OF RELULBCHECK2,
      WA_RELULBCHECK2 TYPE RELULBCHECK2,
      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: <RELULBCHECK2> TYPE RELULBCHECK2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RELULBCHECK2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RELULBCHECK2
  INTO TABLE IT_RELULBCHECK2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELULBCHECK2
*  INTO TABLE @DATA(IT_RELULBCHECK22).
*--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_RELULBCHECK2 INDEX 1 INTO DATA(WA_RELULBCHECK22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RELULBCHECK2 ASSIGNING <RELULBCHECK2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELULBCHECK2>-LAND1 = 1.
<RELULBCHECK2>-BUNDESLAND = 1.
<RELULBCHECK2>-GEMARKUNG = 1.
<RELULBCHECK2>-FLUR = 1.
<RELULBCHECK2>-FLURSTUECK = 1.

ENDLOOP.

LOOP AT IT_RELULBCHECK2 INTO WA_RELULBCHECK2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELULBCHECK2-DVALIDFROM, sy-vline,
  WA_RELULBCHECK2-KATAREA, sy-vline,
  WA_RELULBCHECK2-KATFEINS, sy-vline,
  WA_RELULBCHECK2-AREALBSUM, sy-vline,
  WA_RELULBCHECK2-FEINSLBSUM, sy-vline,
  WA_RELULBCHECK2-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELULBCHECK2 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_RELULBCHECK2 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_RELULBCHECK2 INTO WA_RELULBCHECK2.


*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 FLUR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELULBCHECK2-FLUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULBCHECK2-FLUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KATFEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELULBCHECK2-KATFEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULBCHECK2-KATFEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FEINSLBSUM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELULBCHECK2-FEINSLBSUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULBCHECK2-FEINSLBSUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FEINSLB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELULBCHECK2-FEINSLB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELULBCHECK2-FEINSLB.
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_RELULBCHECK2_STR, 
LAND1 TYPE STRING,
BUNDESLAND TYPE STRING,
GEMARKUNG TYPE STRING,
FLUR TYPE STRING,
FLURSTUECK TYPE STRING,
DVALIDFROM TYPE STRING,
KATAREA TYPE STRING,
KATFEINS TYPE STRING,
AREALBSUM TYPE STRING,
FEINSLBSUM TYPE STRING,
COUNTRY TYPE STRING,
STATE TYPE STRING,
DISTRICT TYPE STRING,
MUNICIPAL TYPE STRING,
LBCNO TYPE STRING,
PROCNO TYPE STRING,
AREALB TYPE STRING,
FEINSLB TYPE STRING,
DPLACEDUPROC TYPE STRING,
DLEGALBIND TYPE STRING,
DBLOCKCHANGE TYPE STRING,
DSTATEMENT TYPE STRING,
DLASTMODADD TYPE STRING,
DREVOCATION TYPE STRING,
USATYPEPLUM TYPE STRING,
XMUSATYPE TYPE STRING,
DESCRLB TYPE STRING,
INTRENOLB TYPE STRING,
INTRENOPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELULBCHECK2_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_RELULBCHECK2_STR-LAND1 sy-vline 
WA_RELULBCHECK2_STR-BUNDESLAND sy-vline 
WA_RELULBCHECK2_STR-GEMARKUNG sy-vline 
WA_RELULBCHECK2_STR-FLUR sy-vline 
WA_RELULBCHECK2_STR-FLURSTUECK sy-vline 
WA_RELULBCHECK2_STR-DVALIDFROM sy-vline 
WA_RELULBCHECK2_STR-KATAREA sy-vline 
WA_RELULBCHECK2_STR-KATFEINS sy-vline 
WA_RELULBCHECK2_STR-AREALBSUM sy-vline 
WA_RELULBCHECK2_STR-FEINSLBSUM sy-vline 
WA_RELULBCHECK2_STR-COUNTRY sy-vline 
WA_RELULBCHECK2_STR-STATE sy-vline 
WA_RELULBCHECK2_STR-DISTRICT sy-vline 
WA_RELULBCHECK2_STR-MUNICIPAL sy-vline 
WA_RELULBCHECK2_STR-LBCNO sy-vline 
WA_RELULBCHECK2_STR-PROCNO sy-vline 
WA_RELULBCHECK2_STR-AREALB sy-vline 
WA_RELULBCHECK2_STR-FEINSLB sy-vline 
WA_RELULBCHECK2_STR-DPLACEDUPROC sy-vline 
WA_RELULBCHECK2_STR-DLEGALBIND sy-vline 
WA_RELULBCHECK2_STR-DBLOCKCHANGE sy-vline 
WA_RELULBCHECK2_STR-DSTATEMENT sy-vline 
WA_RELULBCHECK2_STR-DLASTMODADD sy-vline 
WA_RELULBCHECK2_STR-DREVOCATION sy-vline 
WA_RELULBCHECK2_STR-USATYPEPLUM sy-vline 
WA_RELULBCHECK2_STR-XMUSATYPE sy-vline 
WA_RELULBCHECK2_STR-DESCRLB sy-vline 
WA_RELULBCHECK2_STR-INTRENOLB sy-vline 
WA_RELULBCHECK2_STR-INTRENOPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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