ABAP Select data from SAP table RELUERCHECK1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RELUERCHECK1 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 RELUERCHECK1. 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 RELUERCHECK1 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_RELUERCHECK1 TYPE STANDARD TABLE OF RELUERCHECK1,
      WA_RELUERCHECK1 TYPE RELUERCHECK1,
      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: <RELUERCHECK1> TYPE RELUERCHECK1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RELUERCHECK1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RELUERCHECK1
  INTO TABLE IT_RELUERCHECK1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUERCHECK1
*  INTO TABLE @DATA(IT_RELUERCHECK12).
*--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_RELUERCHECK1 INDEX 1 INTO DATA(WA_RELUERCHECK12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RELUERCHECK1 ASSIGNING <RELUERCHECK1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUERCHECK1>-COUNTRY = 1.
<RELUERCHECK1>-STATE = 1.
<RELUERCHECK1>-DISTRICT = 1.
<RELUERCHECK1>-MUNICIPAL = 1.
<RELUERCHECK1>-SUBDISTRICT = 1.

ENDLOOP.

LOOP AT IT_RELUERCHECK1 INTO WA_RELUERCHECK1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUERCHECK1-ERPAGENO, sy-vline,
  WA_RELUERCHECK1-XMOBJECT, sy-vline,
  WA_RELUERCHECK1-ESNUMBER, sy-vline,
  WA_RELUERCHECK1-COUNTER, sy-vline,
  WA_RELUERCHECK1-DVALIDFROM, sy-vline,
  WA_RELUERCHECK1-DVALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUERCHECK1 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_RELUERCHECK1 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_RELUERCHECK1 INTO WA_RELUERCHECK1.


*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_RELUERCHECK1-FLUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUERCHECK1-FLUR.
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_RELUERCHECK1_STR, 
COUNTRY TYPE STRING,
STATE TYPE STRING,
DISTRICT TYPE STRING,
MUNICIPAL TYPE STRING,
SUBDISTRICT TYPE STRING,
ERPAGENO TYPE STRING,
XMOBJECT TYPE STRING,
ESNUMBER TYPE STRING,
COUNTER TYPE STRING,
DVALIDFROM TYPE STRING,
DVALIDTO TYPE STRING,
GUELTIG_VON_F TYPE STRING,
GUELTIG_BIS TYPE STRING,
LAND1 TYPE STRING,
BUNDESLAND TYPE STRING,
GEMARKUNG TYPE STRING,
FLUR TYPE STRING,
FLURSTUECK TYPE STRING,
INTRENO TYPE STRING,
INTRENOPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUERCHECK1_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_RELUERCHECK1_STR-COUNTRY sy-vline 
WA_RELUERCHECK1_STR-STATE sy-vline 
WA_RELUERCHECK1_STR-DISTRICT sy-vline 
WA_RELUERCHECK1_STR-MUNICIPAL sy-vline 
WA_RELUERCHECK1_STR-SUBDISTRICT sy-vline 
WA_RELUERCHECK1_STR-ERPAGENO sy-vline 
WA_RELUERCHECK1_STR-XMOBJECT sy-vline 
WA_RELUERCHECK1_STR-ESNUMBER sy-vline 
WA_RELUERCHECK1_STR-COUNTER sy-vline 
WA_RELUERCHECK1_STR-DVALIDFROM sy-vline 
WA_RELUERCHECK1_STR-DVALIDTO sy-vline 
WA_RELUERCHECK1_STR-GUELTIG_VON_F sy-vline 
WA_RELUERCHECK1_STR-GUELTIG_BIS sy-vline 
WA_RELUERCHECK1_STR-LAND1 sy-vline 
WA_RELUERCHECK1_STR-BUNDESLAND sy-vline 
WA_RELUERCHECK1_STR-GEMARKUNG sy-vline 
WA_RELUERCHECK1_STR-FLUR sy-vline 
WA_RELUERCHECK1_STR-FLURSTUECK sy-vline 
WA_RELUERCHECK1_STR-INTRENO sy-vline 
WA_RELUERCHECK1_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.