ABAP Select data from SAP table GENFM_S_FMFMIT2_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GENFM_S_FMFMIT2_EXT 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 GENFM_S_FMFMIT2_EXT. 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 GENFM_S_FMFMIT2_EXT 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_GENFM_S_FMFMIT2_EXT TYPE STANDARD TABLE OF GENFM_S_FMFMIT2_EXT,
      WA_GENFM_S_FMFMIT2_EXT TYPE GENFM_S_FMFMIT2_EXT,
      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: <GENFM_S_FMFMIT2_EXT> TYPE GENFM_S_FMFMIT2_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GENFM_S_FMFMIT2_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GENFM_S_FMFMIT2_EXT
  INTO TABLE IT_GENFM_S_FMFMIT2_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GENFM_S_FMFMIT2_EXT
*  INTO TABLE @DATA(IT_GENFM_S_FMFMIT2_EXT2).
*--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_GENFM_S_FMFMIT2_EXT INDEX 1 INTO DATA(WA_GENFM_S_FMFMIT2_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GENFM_S_FMFMIT2_EXT ASSIGNING <GENFM_S_FMFMIT2_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GENFM_S_FMFMIT2_EXT>-RCLNT = 1.
<GENFM_S_FMFMIT2_EXT>-RLDNR = 1.
<GENFM_S_FMFMIT2_EXT>-RRCTY = 1.
<GENFM_S_FMFMIT2_EXT>-RYEAR = 1.
<GENFM_S_FMFMIT2_EXT>-RTCUR = 1.

ENDLOOP.

LOOP AT IT_GENFM_S_FMFMIT2_EXT INTO WA_GENFM_S_FMFMIT2_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GENFM_S_FMFMIT2_EXT-FIKRS, sy-vline,
  WA_GENFM_S_FMFMIT2_EXT-RBUKRS, sy-vline,
  WA_GENFM_S_FMFMIT2_EXT-RFISTL, sy-vline,
  WA_GENFM_S_FMFMIT2_EXT-RFONDS, sy-vline,
  WA_GENFM_S_FMFMIT2_EXT-RFIPEX, sy-vline,
  WA_GENFM_S_FMFMIT2_EXT-RWRTTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GENFM_S_FMFMIT2_EXT 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_GENFM_S_FMFMIT2_EXT 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_GENFM_S_FMFMIT2_EXT INTO WA_GENFM_S_FMFMIT2_EXT.


*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 NUMCV, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field RFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RHKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RHKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RHKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RGNJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RGNJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RGNJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GENFM_S_FMFMIT2_EXT-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GENFM_S_FMFMIT2_EXT-GRANT_NBR.
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_GENFM_S_FMFMIT2_EXT_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
FIKRS TYPE STRING,
RBUKRS TYPE STRING,
RFISTL TYPE STRING,
RFONDS TYPE STRING,
RFIPEX TYPE STRING,
RWRTTP TYPE STRING,
RBTART TYPE STRING,
RSTATS TYPE STRING,
RCFLEV TYPE STRING,
RHKONT TYPE STRING,
PERIO TYPE STRING,
RFAREA TYPE STRING,
RGNJHR TYPE STRING,
RVRGNG TYPE STRING,
ROBJNRZ TYPE STRING,
RUSERDIM TYPE STRING,
RVERS TYPE STRING,
CF_FLAG TYPE STRING,
FKBTR TYPE STRING,
TRBTR TYPE STRING,
GRANT_NBR TYPE STRING,
RBUDGET_PD TYPE STRING,
RMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GENFM_S_FMFMIT2_EXT_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_GENFM_S_FMFMIT2_EXT_STR-RCLNT sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RLDNR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RRCTY sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RYEAR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RTCUR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-FIKRS sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RBUKRS sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RFISTL sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RFONDS sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RFIPEX sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RWRTTP sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RBTART sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RSTATS sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RCFLEV sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RHKONT sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-PERIO sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RFAREA sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RGNJHR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RVRGNG sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-ROBJNRZ sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RUSERDIM sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RVERS sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-CF_FLAG sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-FKBTR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-TRBTR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-GRANT_NBR sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RBUDGET_PD sy-vline 
WA_GENFM_S_FMFMIT2_EXT_STR-RMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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