ABAP Select data from SAP table JVGLFLEXA_FS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVGLFLEXA_FS
*  INTO TABLE @DATA(IT_JVGLFLEXA_FS2).
*--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_JVGLFLEXA_FS INDEX 1 INTO DATA(WA_JVGLFLEXA_FS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVGLFLEXA_FS>-DOCNR = 1.
<JVGLFLEXA_FS>-RYEAR = 1.
<JVGLFLEXA_FS>-POPER = 1.
<JVGLFLEXA_FS>-DOCLN = 1.
<JVGLFLEXA_FS>-RMVCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVGLFLEXA_FS-COST_ELEM, sy-vline,
  WA_JVGLFLEXA_FS-RCNTR, sy-vline,
  WA_JVGLFLEXA_FS-PRCTR, sy-vline,
  WA_JVGLFLEXA_FS-RFAREA, sy-vline,
  WA_JVGLFLEXA_FS-RBUSA, sy-vline,
  WA_JVGLFLEXA_FS-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVGLFLEXA_FS 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_JVGLFLEXA_FS 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_JVGLFLEXA_FS INTO WA_JVGLFLEXA_FS.


*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_JVGLFLEXA_FS-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVGLFLEXA_FS-DOCNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVGLFLEXA_FS-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVGLFLEXA_FS-RECID.
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_JVGLFLEXA_FS_STR, 
DOCNR TYPE STRING,
RYEAR TYPE STRING,
POPER TYPE STRING,
DOCLN TYPE STRING,
RMVCT TYPE STRING,
COST_ELEM TYPE STRING,
RCNTR TYPE STRING,
PRCTR TYPE STRING,
RFAREA TYPE STRING,
RBUSA TYPE STRING,
KOKRS TYPE STRING,
SEGMENT TYPE STRING,
SCNTR TYPE STRING,
PPRCTR TYPE STRING,
SFAREA TYPE STRING,
SBUSA TYPE STRING,
RASSC TYPE STRING,
PSEGMENT TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
RECID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVGLFLEXA_FS_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_JVGLFLEXA_FS_STR-DOCNR sy-vline 
WA_JVGLFLEXA_FS_STR-RYEAR sy-vline 
WA_JVGLFLEXA_FS_STR-POPER sy-vline 
WA_JVGLFLEXA_FS_STR-DOCLN sy-vline 
WA_JVGLFLEXA_FS_STR-RMVCT sy-vline 
WA_JVGLFLEXA_FS_STR-COST_ELEM sy-vline 
WA_JVGLFLEXA_FS_STR-RCNTR sy-vline 
WA_JVGLFLEXA_FS_STR-PRCTR sy-vline 
WA_JVGLFLEXA_FS_STR-RFAREA sy-vline 
WA_JVGLFLEXA_FS_STR-RBUSA sy-vline 
WA_JVGLFLEXA_FS_STR-KOKRS sy-vline 
WA_JVGLFLEXA_FS_STR-SEGMENT sy-vline 
WA_JVGLFLEXA_FS_STR-SCNTR sy-vline 
WA_JVGLFLEXA_FS_STR-PPRCTR sy-vline 
WA_JVGLFLEXA_FS_STR-SFAREA sy-vline 
WA_JVGLFLEXA_FS_STR-SBUSA sy-vline 
WA_JVGLFLEXA_FS_STR-RASSC sy-vline 
WA_JVGLFLEXA_FS_STR-PSEGMENT sy-vline 
WA_JVGLFLEXA_FS_STR-VNAME sy-vline 
WA_JVGLFLEXA_FS_STR-EGRUP sy-vline 
WA_JVGLFLEXA_FS_STR-RECID sy-vline      INTO ld_text SEPARATED BY SPACE.

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