ABAP Select data from SAP table RN1_GRID_ME_EVENT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1_GRID_ME_EVENT 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 RN1_GRID_ME_EVENT. 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 RN1_GRID_ME_EVENT 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_RN1_GRID_ME_EVENT TYPE STANDARD TABLE OF RN1_GRID_ME_EVENT,
      WA_RN1_GRID_ME_EVENT TYPE RN1_GRID_ME_EVENT,
      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: <RN1_GRID_ME_EVENT> TYPE RN1_GRID_ME_EVENT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_GRID_ME_EVENT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_GRID_ME_EVENT
  INTO TABLE IT_RN1_GRID_ME_EVENT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_GRID_ME_EVENT
*  INTO TABLE @DATA(IT_RN1_GRID_ME_EVENT2).
*--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_RN1_GRID_ME_EVENT INDEX 1 INTO DATA(WA_RN1_GRID_ME_EVENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_GRID_ME_EVENT ASSIGNING <RN1_GRID_ME_EVENT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_GRID_ME_EVENT>-ROW_ID = 1.
<RN1_GRID_ME_EVENT>-MEEVTID = 1.
<RN1_GRID_ME_EVENT>-PBDAD = 1.
<RN1_GRID_ME_EVENT>-PBTAD = 1.
<RN1_GRID_ME_EVENT>-PDRUGASTR = 1.

ENDLOOP.

LOOP AT IT_RN1_GRID_ME_EVENT INTO WA_RN1_GRID_ME_EVENT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_GRID_ME_EVENT-DRUGASTRU, sy-vline,
  WA_RN1_GRID_ME_EVENT-FSOURCE, sy-vline,
  WA_RN1_GRID_ME_EVENT-PDRUGDQ, sy-vline,
  WA_RN1_GRID_ME_EVENT-DRUGU, sy-vline,
  WA_RN1_GRID_ME_EVENT-PKGSIZE, sy-vline,
  WA_RN1_GRID_ME_EVENT-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_GRID_ME_EVENT 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_RN1_GRID_ME_EVENT 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_RN1_GRID_ME_EVENT INTO WA_RN1_GRID_ME_EVENT.


*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 MEQUA, internal->external for field PDRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-PDRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-PDRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field PDRUGDQ
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-PDRUGDQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-PDRUGDQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field PKGSIZE
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-PKGSIZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-PKGSIZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field TOTPKG
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-TOTPKG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-TOTPKG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EVSTA_EMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-EVSTA_EMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-EVSTA_EMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field RDRUGDQ
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-RDRUGDQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-RDRUGDQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field SCRAP
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-SCRAP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-SCRAP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MERESP1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-MERESP1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-MERESP1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field RDRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-RDRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-RDRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RDURU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-RDURU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-RDURU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field PLDUR
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_GRID_ME_EVENT-PLDUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_GRID_ME_EVENT-PLDUR.
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_RN1_GRID_ME_EVENT_STR, 
ROW_ID TYPE STRING,
MEEVTID TYPE STRING,
PBDAD TYPE STRING,
PBTAD TYPE STRING,
PDRUGASTR TYPE STRING,
DRUGASTRU TYPE STRING,
FSOURCE TYPE STRING,
PDRUGDQ TYPE STRING,
DRUGU TYPE STRING,
PKGSIZE TYPE STRING,
UNIT TYPE STRING,
TOTPKG TYPE STRING,
PKGUNIT TYPE STRING,
EVSTATUS TYPE STRING,
EVSTA_DATE TYPE STRING,
EVSTA_TIME TYPE STRING,
EVSTA_EMP TYPE STRING,
FALNR TYPE STRING,
RDRUGDQ TYPE STRING,
PREP_BUT TYPE STRING,
SCRAP TYPE STRING,
MERESP1 TYPE STRING,
RDRUGASTR TYPE STRING,
EVENT_REF TYPE STRING,
OUPREP_EXT TYPE STRING,
PURP_ADMIN TYPE STRING,
PURP_DISP TYPE STRING,
PURP_PPRINT TYPE STRING,
PURPOSE_CHANGE TYPE STRING,
PDUR TYPE STRING,
DURU TYPE STRING,
RDUR TYPE STRING,
RDURU TYPE STRING,
PLDUR TYPE STRING,
UNIT_COMP TYPE STRING,
DRUGNAME TYPE STRING,
EDESCR TYPE STRING,
PKGMULT TYPE STRING,
RBDAD TYPE STRING,
RBTAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_GRID_ME_EVENT_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_RN1_GRID_ME_EVENT_STR-ROW_ID sy-vline 
WA_RN1_GRID_ME_EVENT_STR-MEEVTID sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PBDAD sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PBTAD sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PDRUGASTR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-DRUGASTRU sy-vline 
WA_RN1_GRID_ME_EVENT_STR-FSOURCE sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PDRUGDQ sy-vline 
WA_RN1_GRID_ME_EVENT_STR-DRUGU sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PKGSIZE sy-vline 
WA_RN1_GRID_ME_EVENT_STR-UNIT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-TOTPKG sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PKGUNIT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EVSTATUS sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EVSTA_DATE sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EVSTA_TIME sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EVSTA_EMP sy-vline 
WA_RN1_GRID_ME_EVENT_STR-FALNR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RDRUGDQ sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PREP_BUT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-SCRAP sy-vline 
WA_RN1_GRID_ME_EVENT_STR-MERESP1 sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RDRUGASTR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EVENT_REF sy-vline 
WA_RN1_GRID_ME_EVENT_STR-OUPREP_EXT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PURP_ADMIN sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PURP_DISP sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PURP_PPRINT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PURPOSE_CHANGE sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PDUR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-DURU sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RDUR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RDURU sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PLDUR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-UNIT_COMP sy-vline 
WA_RN1_GRID_ME_EVENT_STR-DRUGNAME sy-vline 
WA_RN1_GRID_ME_EVENT_STR-EDESCR sy-vline 
WA_RN1_GRID_ME_EVENT_STR-PKGMULT sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RBDAD sy-vline 
WA_RN1_GRID_ME_EVENT_STR-RBTAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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