ABAP Select data from SAP table FMMP_S_LINE_DOCNR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMMP_S_LINE_DOCNR
*  INTO TABLE @DATA(IT_FMMP_S_LINE_DOCNR2).
*--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_FMMP_S_LINE_DOCNR INDEX 1 INTO DATA(WA_FMMP_S_LINE_DOCNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMMP_S_LINE_DOCNR>-DOCNR = 1.
<FMMP_S_LINE_DOCNR>-DOCLN = 1.
<FMMP_S_LINE_DOCNR>-LINENB = 1.
<FMMP_S_LINE_DOCNR>-FM_AREA = 1.
<FMMP_S_LINE_DOCNR>-TECHORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMMP_S_LINE_DOCNR-ADDRESS, sy-vline,
  WA_FMMP_S_LINE_DOCNR-FUND, sy-vline,
  WA_FMMP_S_LINE_DOCNR-FUNDSCTR, sy-vline,
  WA_FMMP_S_LINE_DOCNR-CMMTITEM, sy-vline,
  WA_FMMP_S_LINE_DOCNR-FUNCAREA, sy-vline,
  WA_FMMP_S_LINE_DOCNR-GRANT_NBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMMP_S_LINE_DOCNR 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_FMMP_S_LINE_DOCNR 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_FMMP_S_LINE_DOCNR INTO WA_FMMP_S_LINE_DOCNR.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BUDCAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMMP_S_LINE_DOCNR-BUDCAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMMP_S_LINE_DOCNR-BUDCAT.
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_FMMP_S_LINE_DOCNR_STR, 
DOCNR TYPE STRING,
DOCLN TYPE STRING,
LINENB TYPE STRING,
FM_AREA TYPE STRING,
TECHORG TYPE STRING,
ADDRESS TYPE STRING,
FUND TYPE STRING,
FUNDSCTR TYPE STRING,
CMMTITEM TYPE STRING,
FUNCAREA TYPE STRING,
GRANT_NBR TYPE STRING,
MEASURE TYPE STRING,
USERDIM TYPE STRING,
BUDGET_PD TYPE STRING,
VERSION TYPE STRING,
FISCYEAR TYPE STRING,
CEFFYEAR TYPE STRING,
BUDCAT TYPE STRING,
VALTYPE TYPE STRING,
WFSTATE TYPE STRING,
PROCESS TYPE STRING,
BUDTYPE TYPE STRING,
FLG_UNDO TYPE STRING,
FLG_ADDED TYPE STRING,
CTEM_CATEGORY TYPE STRING,
RPMAX TYPE STRING,
TEXT50_ITEM TYPE STRING,
TVAL01 TYPE STRING,
TVAL02 TYPE STRING,
TVAL03 TYPE STRING,
TVAL04 TYPE STRING,
TVAL05 TYPE STRING,
TVAL06 TYPE STRING,
TVAL07 TYPE STRING,
TVAL08 TYPE STRING,
TVAL09 TYPE STRING,
TVAL10 TYPE STRING,
TVAL11 TYPE STRING,
TVAL12 TYPE STRING,
TVAL13 TYPE STRING,
TVAL14 TYPE STRING,
TVAL15 TYPE STRING,
TVAL16 TYPE STRING,
LVAL01 TYPE STRING,
LVAL02 TYPE STRING,
LVAL03 TYPE STRING,
LVAL04 TYPE STRING,
LVAL05 TYPE STRING,
LVAL06 TYPE STRING,
LVAL07 TYPE STRING,
LVAL08 TYPE STRING,
LVAL09 TYPE STRING,
LVAL10 TYPE STRING,
LVAL11 TYPE STRING,
LVAL12 TYPE STRING,
LVAL13 TYPE STRING,
LVAL14 TYPE STRING,
LVAL15 TYPE STRING,
LVAL16 TYPE STRING,
LVAL TYPE STRING,
TVAL TYPE STRING,
TEXT50 TYPE STRING,
TEXT100 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMMP_S_LINE_DOCNR_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_FMMP_S_LINE_DOCNR_STR-DOCNR sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-DOCLN sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LINENB sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FM_AREA sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TECHORG sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-ADDRESS sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FUND sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FUNDSCTR sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-CMMTITEM sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FUNCAREA sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-GRANT_NBR sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-MEASURE sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-USERDIM sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-BUDGET_PD sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-VERSION sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FISCYEAR sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-CEFFYEAR sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-BUDCAT sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-VALTYPE sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-WFSTATE sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-PROCESS sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-BUDTYPE sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FLG_UNDO sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-FLG_ADDED sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-CTEM_CATEGORY sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-RPMAX sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TEXT50_ITEM sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL01 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL02 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL03 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL04 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL05 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL06 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL07 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL08 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL09 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL10 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL11 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL12 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL13 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL14 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL15 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL16 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL01 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL02 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL03 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL04 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL05 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL06 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL07 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL08 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL09 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL10 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL11 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL12 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL13 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL14 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL15 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL16 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-LVAL sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TVAL sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TEXT50 sy-vline 
WA_FMMP_S_LINE_DOCNR_STR-TEXT100 sy-vline      INTO ld_text SEPARATED BY SPACE.

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