ABAP Select data from SAP table JVGLFLEXA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVGLFLEXA 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. 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 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 TYPE STANDARD TABLE OF JVGLFLEXA,
      WA_JVGLFLEXA TYPE JVGLFLEXA,
      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> TYPE JVGLFLEXA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVGLFLEXA
*  INTO TABLE @DATA(IT_JVGLFLEXA2).
*--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 INDEX 1 INTO DATA(WA_JVGLFLEXA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVGLFLEXA>-RCLNT = 1.
<JVGLFLEXA>-RYEAR = 1.
<JVGLFLEXA>-DOCNR = 1.
<JVGLFLEXA>-RLDNR = 1.
<JVGLFLEXA>-RBUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVGLFLEXA-DOCLN, sy-vline,
  WA_JVGLFLEXA-ACTIV, sy-vline,
  WA_JVGLFLEXA-RMVCT, sy-vline,
  WA_JVGLFLEXA-RTCUR, sy-vline,
  WA_JVGLFLEXA-RUNIT, sy-vline,
  WA_JVGLFLEXA-AWTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVGLFLEXA 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 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 INTO WA_JVGLFLEXA.


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVGLFLEXA-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVGLFLEXA-BELNR.
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_STR, 
RCLNT TYPE STRING,
RYEAR TYPE STRING,
DOCNR TYPE STRING,
RLDNR TYPE STRING,
RBUKRS TYPE STRING,
DOCLN TYPE STRING,
ACTIV TYPE STRING,
RMVCT TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
AWTYP TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
LOGSYS TYPE STRING,
RACCT 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,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
OSL TYPE STRING,
MSL TYPE STRING,
WSL TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
RWCUR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
BSCHL TYPE STRING,
BSTAT TYPE STRING,
LINETYPE TYPE STRING,
XSPLITMOD TYPE STRING,
USNAM TYPE STRING,
TIMESTAMP TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVGLFLEXA_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_STR-RCLNT sy-vline 
WA_JVGLFLEXA_STR-RYEAR sy-vline 
WA_JVGLFLEXA_STR-DOCNR sy-vline 
WA_JVGLFLEXA_STR-RLDNR sy-vline 
WA_JVGLFLEXA_STR-RBUKRS sy-vline 
WA_JVGLFLEXA_STR-DOCLN sy-vline 
WA_JVGLFLEXA_STR-ACTIV sy-vline 
WA_JVGLFLEXA_STR-RMVCT sy-vline 
WA_JVGLFLEXA_STR-RTCUR sy-vline 
WA_JVGLFLEXA_STR-RUNIT sy-vline 
WA_JVGLFLEXA_STR-AWTYP sy-vline 
WA_JVGLFLEXA_STR-RRCTY sy-vline 
WA_JVGLFLEXA_STR-RVERS sy-vline 
WA_JVGLFLEXA_STR-LOGSYS sy-vline 
WA_JVGLFLEXA_STR-RACCT sy-vline 
WA_JVGLFLEXA_STR-COST_ELEM sy-vline 
WA_JVGLFLEXA_STR-RCNTR sy-vline 
WA_JVGLFLEXA_STR-PRCTR sy-vline 
WA_JVGLFLEXA_STR-RFAREA sy-vline 
WA_JVGLFLEXA_STR-RBUSA sy-vline 
WA_JVGLFLEXA_STR-KOKRS sy-vline 
WA_JVGLFLEXA_STR-SEGMENT sy-vline 
WA_JVGLFLEXA_STR-SCNTR sy-vline 
WA_JVGLFLEXA_STR-PPRCTR sy-vline 
WA_JVGLFLEXA_STR-SFAREA sy-vline 
WA_JVGLFLEXA_STR-SBUSA sy-vline 
WA_JVGLFLEXA_STR-RASSC sy-vline 
WA_JVGLFLEXA_STR-PSEGMENT sy-vline 
WA_JVGLFLEXA_STR-VNAME sy-vline 
WA_JVGLFLEXA_STR-EGRUP sy-vline 
WA_JVGLFLEXA_STR-RECID sy-vline 
WA_JVGLFLEXA_STR-TSL sy-vline 
WA_JVGLFLEXA_STR-HSL sy-vline 
WA_JVGLFLEXA_STR-KSL sy-vline 
WA_JVGLFLEXA_STR-OSL sy-vline 
WA_JVGLFLEXA_STR-MSL sy-vline 
WA_JVGLFLEXA_STR-WSL sy-vline 
WA_JVGLFLEXA_STR-DRCRK sy-vline 
WA_JVGLFLEXA_STR-POPER sy-vline 
WA_JVGLFLEXA_STR-RWCUR sy-vline 
WA_JVGLFLEXA_STR-GJAHR sy-vline 
WA_JVGLFLEXA_STR-BUDAT sy-vline 
WA_JVGLFLEXA_STR-BELNR sy-vline 
WA_JVGLFLEXA_STR-BUZEI sy-vline 
WA_JVGLFLEXA_STR-BSCHL sy-vline 
WA_JVGLFLEXA_STR-BSTAT sy-vline 
WA_JVGLFLEXA_STR-LINETYPE sy-vline 
WA_JVGLFLEXA_STR-XSPLITMOD sy-vline 
WA_JVGLFLEXA_STR-USNAM sy-vline 
WA_JVGLFLEXA_STR-TIMESTAMP sy-vline 
WA_JVGLFLEXA_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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