ABAP Select data from SAP table JVFIPOST into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVFIPOST 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 JVFIPOST. 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 JVFIPOST 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_JVFIPOST TYPE STANDARD TABLE OF JVFIPOST,
      WA_JVFIPOST TYPE JVFIPOST,
      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: <JVFIPOST> TYPE JVFIPOST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVFIPOST
*  INTO TABLE @DATA(IT_JVFIPOST2).
*--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_JVFIPOST INDEX 1 INTO DATA(WA_JVFIPOST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVFIPOST>-RVERS = 1.
<JVFIPOST>-INTERCO = 1.
<JVFIPOST>-RBUKRS = 1.
<JVFIPOST>-RJVNAM = 1.
<JVFIPOST>-REGROU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVFIPOST-RFCUR, sy-vline,
  WA_JVFIPOST-TAXPARTN, sy-vline,
  WA_JVFIPOST-FUNCT, sy-vline,
  WA_JVFIPOST-DOCNO, sy-vline,
  WA_JVFIPOST-LSORT, sy-vline,
  WA_JVFIPOST-LINETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVFIPOST 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_JVFIPOST 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_JVFIPOST INTO WA_JVFIPOST.


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

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

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

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field RPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_JVFIPOST-RPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVFIPOST-RPROJK.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field RANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVFIPOST-RANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVFIPOST-RANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVFIPOST-RANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVFIPOST-RANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ORG_ACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVFIPOST-ORG_ACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVFIPOST-ORG_ACCT.
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_JVFIPOST_STR, 
RVERS TYPE STRING,
INTERCO TYPE STRING,
RBUKRS TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RFCUR TYPE STRING,
TAXPARTN TYPE STRING,
FUNCT TYPE STRING,
DOCNO TYPE STRING,
LSORT TYPE STRING,
LINETYPE TYPE STRING,
RACCT TYPE STRING,
NEWKO TYPE STRING,
RCNTR TYPE STRING,
RORDNR TYPE STRING,
RPROJK TYPE STRING,
RPRCTR TYPE STRING,
RANLN1 TYPE STRING,
RANLN2 TYPE STRING,
RANBWA TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
PRODPER TYPE STRING,
RPARTN TYPE STRING,
CITYPE TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
TEXT_M TYPE STRING,
XKTOSL TYPE STRING,
KSCHL TYPE STRING,
PSCHEM TYPE STRING,
PT_CUT TYPE STRING,
CBCUSTOMER TYPE STRING,
CBVENDOR TYPE STRING,
CBPAYTERM TYPE STRING,
CBPT2 TYPE STRING,
XSPLT TYPE STRING,
TSL_1 TYPE STRING,
HSL_1 TYPE STRING,
HSL_2 TYPE STRING,
HSL_3 TYPE STRING,
ORG_ACCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVFIPOST_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_JVFIPOST_STR-RVERS sy-vline 
WA_JVFIPOST_STR-INTERCO sy-vline 
WA_JVFIPOST_STR-RBUKRS sy-vline 
WA_JVFIPOST_STR-RJVNAM sy-vline 
WA_JVFIPOST_STR-REGROU sy-vline 
WA_JVFIPOST_STR-RFCUR sy-vline 
WA_JVFIPOST_STR-TAXPARTN sy-vline 
WA_JVFIPOST_STR-FUNCT sy-vline 
WA_JVFIPOST_STR-DOCNO sy-vline 
WA_JVFIPOST_STR-LSORT sy-vline 
WA_JVFIPOST_STR-LINETYPE sy-vline 
WA_JVFIPOST_STR-RACCT sy-vline 
WA_JVFIPOST_STR-NEWKO sy-vline 
WA_JVFIPOST_STR-RCNTR sy-vline 
WA_JVFIPOST_STR-RORDNR sy-vline 
WA_JVFIPOST_STR-RPROJK sy-vline 
WA_JVFIPOST_STR-RPRCTR sy-vline 
WA_JVFIPOST_STR-RANLN1 sy-vline 
WA_JVFIPOST_STR-RANLN2 sy-vline 
WA_JVFIPOST_STR-RANBWA sy-vline 
WA_JVFIPOST_STR-NPLNR sy-vline 
WA_JVFIPOST_STR-AUFPL sy-vline 
WA_JVFIPOST_STR-APLZL sy-vline 
WA_JVFIPOST_STR-PRODPER sy-vline 
WA_JVFIPOST_STR-RPARTN sy-vline 
WA_JVFIPOST_STR-CITYPE sy-vline 
WA_JVFIPOST_STR-MWSKZ sy-vline 
WA_JVFIPOST_STR-TXJCD sy-vline 
WA_JVFIPOST_STR-TEXT_M sy-vline 
WA_JVFIPOST_STR-XKTOSL sy-vline 
WA_JVFIPOST_STR-KSCHL sy-vline 
WA_JVFIPOST_STR-PSCHEM sy-vline 
WA_JVFIPOST_STR-PT_CUT sy-vline 
WA_JVFIPOST_STR-CBCUSTOMER sy-vline 
WA_JVFIPOST_STR-CBVENDOR sy-vline 
WA_JVFIPOST_STR-CBPAYTERM sy-vline 
WA_JVFIPOST_STR-CBPT2 sy-vline 
WA_JVFIPOST_STR-XSPLT sy-vline 
WA_JVFIPOST_STR-TSL_1 sy-vline 
WA_JVFIPOST_STR-HSL_1 sy-vline 
WA_JVFIPOST_STR-HSL_2 sy-vline 
WA_JVFIPOST_STR-HSL_3 sy-vline 
WA_JVFIPOST_STR-ORG_ACCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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