ABAP Select data from SAP table JVPSC01A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JVPSC01A 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 JVPSC01A. 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 JVPSC01A 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_JVPSC01A TYPE STANDARD TABLE OF JVPSC01A,
      WA_JVPSC01A TYPE JVPSC01A,
      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: <JVPSC01A> TYPE JVPSC01A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JVPSC01A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JVPSC01A
  INTO TABLE IT_JVPSC01A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVPSC01A
*  INTO TABLE @DATA(IT_JVPSC01A2).
*--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_JVPSC01A INDEX 1 INTO DATA(WA_JVPSC01A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JVPSC01A ASSIGNING <JVPSC01A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVPSC01A>-RCLNT = 1.
<JVPSC01A>-GL_SIRID = 1.
<JVPSC01A>-RLDNR = 1.
<JVPSC01A>-RRCTY = 1.
<JVPSC01A>-RVERS = 1.

ENDLOOP.

LOOP AT IT_JVPSC01A INTO WA_JVPSC01A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVPSC01A-RYEAR, sy-vline,
  WA_JVPSC01A-RTCUR, sy-vline,
  WA_JVPSC01A-RUNIT, sy-vline,
  WA_JVPSC01A-DRCRK, sy-vline,
  WA_JVPSC01A-POPER, sy-vline,
  WA_JVPSC01A-DOCCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVPSC01A 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_JVPSC01A 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_JVPSC01A INTO WA_JVPSC01A.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RJVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RJVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RJVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-REGROU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-REGROU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RORDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RPROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RPROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RPRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RRECIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-RRECIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-RRECIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-PARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFDOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-REFDOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-REFDOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVPSC01A-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVPSC01A-REFRYEAR.
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_JVPSC01A_STR, 
RCLNT TYPE STRING,
GL_SIRID TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
RBUKRS TYPE STRING,
RPSC_NAME TYPE STRING,
RPSC_PRODUCT TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RACCT TYPE STRING,
RBUSA TYPE STRING,
RCNTR TYPE STRING,
RORDNR TYPE STRING,
RPROJK TYPE STRING,
RPRCTR TYPE STRING,
RAUFPL TYPE STRING,
RAPLZL TYPE STRING,
RRECIN TYPE STRING,
LOGSYS TYPE STRING,
PSC_CALC_TYPE TYPE STRING,
PSC_PER_COST TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
ANBWA TYPE STRING,
PARTN TYPE STRING,
SPSC_NAME TYPE STRING,
SPSC_PRODUCT TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
MSL TYPE STRING,
SGTXT TYPE STRING,
DOCTY TYPE STRING,
ACTIV TYPE STRING,
BUDAT TYPE STRING,
WSDAT TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
KOKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVPSC01A_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_JVPSC01A_STR-RCLNT sy-vline 
WA_JVPSC01A_STR-GL_SIRID sy-vline 
WA_JVPSC01A_STR-RLDNR sy-vline 
WA_JVPSC01A_STR-RRCTY sy-vline 
WA_JVPSC01A_STR-RVERS sy-vline 
WA_JVPSC01A_STR-RYEAR sy-vline 
WA_JVPSC01A_STR-RTCUR sy-vline 
WA_JVPSC01A_STR-RUNIT sy-vline 
WA_JVPSC01A_STR-DRCRK sy-vline 
WA_JVPSC01A_STR-POPER sy-vline 
WA_JVPSC01A_STR-DOCCT sy-vline 
WA_JVPSC01A_STR-DOCNR sy-vline 
WA_JVPSC01A_STR-DOCLN sy-vline 
WA_JVPSC01A_STR-RBUKRS sy-vline 
WA_JVPSC01A_STR-RPSC_NAME sy-vline 
WA_JVPSC01A_STR-RPSC_PRODUCT sy-vline 
WA_JVPSC01A_STR-RJVNAM sy-vline 
WA_JVPSC01A_STR-REGROU sy-vline 
WA_JVPSC01A_STR-RACCT sy-vline 
WA_JVPSC01A_STR-RBUSA sy-vline 
WA_JVPSC01A_STR-RCNTR sy-vline 
WA_JVPSC01A_STR-RORDNR sy-vline 
WA_JVPSC01A_STR-RPROJK sy-vline 
WA_JVPSC01A_STR-RPRCTR sy-vline 
WA_JVPSC01A_STR-RAUFPL sy-vline 
WA_JVPSC01A_STR-RAPLZL sy-vline 
WA_JVPSC01A_STR-RRECIN sy-vline 
WA_JVPSC01A_STR-LOGSYS sy-vline 
WA_JVPSC01A_STR-PSC_CALC_TYPE sy-vline 
WA_JVPSC01A_STR-PSC_PER_COST sy-vline 
WA_JVPSC01A_STR-ANLN1 sy-vline 
WA_JVPSC01A_STR-ANLN2 sy-vline 
WA_JVPSC01A_STR-ANBWA sy-vline 
WA_JVPSC01A_STR-PARTN sy-vline 
WA_JVPSC01A_STR-SPSC_NAME sy-vline 
WA_JVPSC01A_STR-SPSC_PRODUCT sy-vline 
WA_JVPSC01A_STR-TSL sy-vline 
WA_JVPSC01A_STR-HSL sy-vline 
WA_JVPSC01A_STR-KSL sy-vline 
WA_JVPSC01A_STR-MSL sy-vline 
WA_JVPSC01A_STR-SGTXT sy-vline 
WA_JVPSC01A_STR-DOCTY sy-vline 
WA_JVPSC01A_STR-ACTIV sy-vline 
WA_JVPSC01A_STR-BUDAT sy-vline 
WA_JVPSC01A_STR-WSDAT sy-vline 
WA_JVPSC01A_STR-REFDOCNR sy-vline 
WA_JVPSC01A_STR-REFRYEAR sy-vline 
WA_JVPSC01A_STR-REFDOCLN sy-vline 
WA_JVPSC01A_STR-REFDOCCT sy-vline 
WA_JVPSC01A_STR-REFACTIV sy-vline 
WA_JVPSC01A_STR-CPUDT sy-vline 
WA_JVPSC01A_STR-CPUTM sy-vline 
WA_JVPSC01A_STR-USNAM sy-vline 
WA_JVPSC01A_STR-AWTYP sy-vline 
WA_JVPSC01A_STR-AWORG sy-vline 
WA_JVPSC01A_STR-KOKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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