ABAP Select data from SAP table V_RELMNAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_RELMNAB
*  INTO TABLE @DATA(IT_V_RELMNAB2).
*--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_V_RELMNAB INDEX 1 INTO DATA(WA_V_RELMNAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_RELMNAB>-MANDT = 1.
<V_RELMNAB>-INTRENO = 1.
<V_RELMNAB>-NANO = 1.
<V_RELMNAB>-OBJNR = 1.
<V_RELMNAB>-CREATIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_RELMNAB-RESPONSIBLE, sy-vline,
  WA_V_RELMNAB-USEREXCLUSIVE, sy-vline,
  WA_V_RELMNAB-AUTHGRP, sy-vline,
  WA_V_RELMNAB-XNA, sy-vline,
  WA_V_RELMNAB-VALIDFROM, sy-vline,
  WA_V_RELMNAB-VALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_RELMNAB 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_V_RELMNAB 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_V_RELMNAB INTO WA_V_RELMNAB.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ZONEMEASUNIT1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-ZONEMEASUNIT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-ZONEMEASUNIT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZONEMEASUNIT2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-ZONEMEASUNIT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-ZONEMEASUNIT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZONEMEASUNIT3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-ZONEMEASUNIT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-ZONEMEASUNIT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-MEASUNIT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-MEASUNIT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-MEASUNIT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-MEASUNIT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-MEASUNIT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-MEASUNIT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-MEASUNIT4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-MEASUNIT4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT5
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_RELMNAB-MEASUNIT5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_RELMNAB-MEASUNIT5.
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_V_RELMNAB_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
NANO TYPE STRING,
OBJNR TYPE STRING,
CREATIONTYPE TYPE STRING,
RESPONSIBLE TYPE STRING,
USEREXCLUSIVE TYPE STRING,
AUTHGRP TYPE STRING,
XNA TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
NANOOLD TYPE STRING,
FILENO TYPE STRING,
ISCOLL TYPE STRING,
ASSESSDATE TYPE STRING,
ASSESSVALUE TYPE STRING,
CURRENCY TYPE STRING,
TAXVAL1 TYPE STRING,
TAXVAL2 TYPE STRING,
MEASVALUE TYPE STRING,
MEASUNIT TYPE STRING,
NAPRTYPE TYPE STRING,
LOCATION1 TYPE STRING,
LOCATION2 TYPE STRING,
SEARCHTERM TYPE STRING,
MCLOCATION1 TYPE STRING,
MCLOCATION2 TYPE STRING,
MCSEARCHTERM TYPE STRING,
NASTMNTTYPE TYPE STRING,
NAOWNREL TYPE STRING,
NAMETHOD TYPE STRING,
NAPRTYPEAR TYPE STRING,
ZONEMEAS1 TYPE STRING,
ZONEMEASUNIT1 TYPE STRING,
ZONEVALUE1 TYPE STRING,
ZONEMEAS2 TYPE STRING,
ZONEMEASUNIT2 TYPE STRING,
ZONEVALUE2 TYPE STRING,
ZONEMEAS3 TYPE STRING,
ZONEMEASUNIT3 TYPE STRING,
ZONEVALUE3 TYPE STRING,
PROPERTYVAL1 TYPE STRING,
BUILDINGVAL1 TYPE STRING,
GROUNDVAL TYPE STRING,
BASICVAL TYPE STRING,
CALCPERCENT TYPE STRING,
PROPERTYVAL2 TYPE STRING,
BUILDINGVAL2 TYPE STRING,
CALCVALUE TYPE STRING,
CALCDIFF TYPE STRING,
DIFFERENCE TYPE STRING,
MEAS1 TYPE STRING,
MEASUNIT1 TYPE STRING,
MEAS2 TYPE STRING,
MEASUNIT2 TYPE STRING,
MEAS3 TYPE STRING,
MEASUNIT3 TYPE STRING,
MEAS4 TYPE STRING,
MEASUNIT4 TYPE STRING,
MEAS5 TYPE STRING,
MEASUNIT5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_RELMNAB_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_V_RELMNAB_STR-MANDT sy-vline 
WA_V_RELMNAB_STR-INTRENO sy-vline 
WA_V_RELMNAB_STR-NANO sy-vline 
WA_V_RELMNAB_STR-OBJNR sy-vline 
WA_V_RELMNAB_STR-CREATIONTYPE sy-vline 
WA_V_RELMNAB_STR-RESPONSIBLE sy-vline 
WA_V_RELMNAB_STR-USEREXCLUSIVE sy-vline 
WA_V_RELMNAB_STR-AUTHGRP sy-vline 
WA_V_RELMNAB_STR-XNA sy-vline 
WA_V_RELMNAB_STR-VALIDFROM sy-vline 
WA_V_RELMNAB_STR-VALIDTO sy-vline 
WA_V_RELMNAB_STR-NANOOLD sy-vline 
WA_V_RELMNAB_STR-FILENO sy-vline 
WA_V_RELMNAB_STR-ISCOLL sy-vline 
WA_V_RELMNAB_STR-ASSESSDATE sy-vline 
WA_V_RELMNAB_STR-ASSESSVALUE sy-vline 
WA_V_RELMNAB_STR-CURRENCY sy-vline 
WA_V_RELMNAB_STR-TAXVAL1 sy-vline 
WA_V_RELMNAB_STR-TAXVAL2 sy-vline 
WA_V_RELMNAB_STR-MEASVALUE sy-vline 
WA_V_RELMNAB_STR-MEASUNIT sy-vline 
WA_V_RELMNAB_STR-NAPRTYPE sy-vline 
WA_V_RELMNAB_STR-LOCATION1 sy-vline 
WA_V_RELMNAB_STR-LOCATION2 sy-vline 
WA_V_RELMNAB_STR-SEARCHTERM sy-vline 
WA_V_RELMNAB_STR-MCLOCATION1 sy-vline 
WA_V_RELMNAB_STR-MCLOCATION2 sy-vline 
WA_V_RELMNAB_STR-MCSEARCHTERM sy-vline 
WA_V_RELMNAB_STR-NASTMNTTYPE sy-vline 
WA_V_RELMNAB_STR-NAOWNREL sy-vline 
WA_V_RELMNAB_STR-NAMETHOD sy-vline 
WA_V_RELMNAB_STR-NAPRTYPEAR sy-vline 
WA_V_RELMNAB_STR-ZONEMEAS1 sy-vline 
WA_V_RELMNAB_STR-ZONEMEASUNIT1 sy-vline 
WA_V_RELMNAB_STR-ZONEVALUE1 sy-vline 
WA_V_RELMNAB_STR-ZONEMEAS2 sy-vline 
WA_V_RELMNAB_STR-ZONEMEASUNIT2 sy-vline 
WA_V_RELMNAB_STR-ZONEVALUE2 sy-vline 
WA_V_RELMNAB_STR-ZONEMEAS3 sy-vline 
WA_V_RELMNAB_STR-ZONEMEASUNIT3 sy-vline 
WA_V_RELMNAB_STR-ZONEVALUE3 sy-vline 
WA_V_RELMNAB_STR-PROPERTYVAL1 sy-vline 
WA_V_RELMNAB_STR-BUILDINGVAL1 sy-vline 
WA_V_RELMNAB_STR-GROUNDVAL sy-vline 
WA_V_RELMNAB_STR-BASICVAL sy-vline 
WA_V_RELMNAB_STR-CALCPERCENT sy-vline 
WA_V_RELMNAB_STR-PROPERTYVAL2 sy-vline 
WA_V_RELMNAB_STR-BUILDINGVAL2 sy-vline 
WA_V_RELMNAB_STR-CALCVALUE sy-vline 
WA_V_RELMNAB_STR-CALCDIFF sy-vline 
WA_V_RELMNAB_STR-DIFFERENCE sy-vline 
WA_V_RELMNAB_STR-MEAS1 sy-vline 
WA_V_RELMNAB_STR-MEASUNIT1 sy-vline 
WA_V_RELMNAB_STR-MEAS2 sy-vline 
WA_V_RELMNAB_STR-MEASUNIT2 sy-vline 
WA_V_RELMNAB_STR-MEAS3 sy-vline 
WA_V_RELMNAB_STR-MEASUNIT3 sy-vline 
WA_V_RELMNAB_STR-MEAS4 sy-vline 
WA_V_RELMNAB_STR-MEASUNIT4 sy-vline 
WA_V_RELMNAB_STR-MEAS5 sy-vline 
WA_V_RELMNAB_STR-MEASUNIT5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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