ABAP Select data from SAP table T8J_JVEC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8J_JVEC 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 T8J_JVEC. 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 T8J_JVEC 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_T8J_JVEC TYPE STANDARD TABLE OF T8J_JVEC,
      WA_T8J_JVEC TYPE T8J_JVEC,
      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: <T8J_JVEC> TYPE T8J_JVEC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8J_JVEC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8J_JVEC
  INTO TABLE IT_T8J_JVEC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8J_JVEC
*  INTO TABLE @DATA(IT_T8J_JVEC2).
*--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_T8J_JVEC INDEX 1 INTO DATA(WA_T8J_JVEC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8J_JVEC ASSIGNING <T8J_JVEC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8J_JVEC>-MANDT = 1.
<T8J_JVEC>-RBUKRS = 1.
<T8J_JVEC>-PROCESS = 1.
<T8J_JVEC>-RYEAR = 1.
<T8J_JVEC>-DOCNR = 1.

ENDLOOP.

LOOP AT IT_T8J_JVEC INTO WA_T8J_JVEC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8J_JVEC-DOCLN, sy-vline,
  WA_T8J_JVEC-POPER, sy-vline,
  WA_T8J_JVEC-SEQNO, sy-vline,
  WA_T8J_JVEC-RJVNAM, sy-vline,
  WA_T8J_JVEC-REGROU_OLD, sy-vline,
  WA_T8J_JVEC-REGROU_NEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8J_JVEC 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_T8J_JVEC 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_T8J_JVEC INTO WA_T8J_JVEC.


*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_T8J_JVEC-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-DOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RJVNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-RJVNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-RJVNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU_OLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REGROU_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REGROU_OLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REGROU_NEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REGROU_NEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REGROU_NEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFDOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REFDOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REFDOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REFRYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFFIDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REFFIDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REFFIDOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REV_AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REV_AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REV_AWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REV_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REV_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REV_BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REP_AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REP_AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REP_AWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REP_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J_JVEC-REP_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J_JVEC-REP_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_T8J_JVEC_STR, 
MANDT TYPE STRING,
RBUKRS TYPE STRING,
PROCESS TYPE STRING,
RYEAR TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
POPER TYPE STRING,
SEQNO TYPE STRING,
RJVNAM TYPE STRING,
REGROU_OLD TYPE STRING,
REGROU_NEW TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
REFFIDLN TYPE STRING,
REFFIDOC TYPE STRING,
REV_AWTYP TYPE STRING,
REV_AWORG TYPE STRING,
REV_AWREF TYPE STRING,
REV_BELNR TYPE STRING,
REV_BUZEI TYPE STRING,
REP_AWTYP TYPE STRING,
REP_AWORG TYPE STRING,
REP_AWREF TYPE STRING,
REP_BELNR TYPE STRING,
REP_BUZEI TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
ERNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8J_JVEC_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_T8J_JVEC_STR-MANDT sy-vline 
WA_T8J_JVEC_STR-RBUKRS sy-vline 
WA_T8J_JVEC_STR-PROCESS sy-vline 
WA_T8J_JVEC_STR-RYEAR sy-vline 
WA_T8J_JVEC_STR-DOCNR sy-vline 
WA_T8J_JVEC_STR-DOCLN sy-vline 
WA_T8J_JVEC_STR-POPER sy-vline 
WA_T8J_JVEC_STR-SEQNO sy-vline 
WA_T8J_JVEC_STR-RJVNAM sy-vline 
WA_T8J_JVEC_STR-REGROU_OLD sy-vline 
WA_T8J_JVEC_STR-REGROU_NEW sy-vline 
WA_T8J_JVEC_STR-REFDOCNR sy-vline 
WA_T8J_JVEC_STR-REFRYEAR sy-vline 
WA_T8J_JVEC_STR-REFDOCLN sy-vline 
WA_T8J_JVEC_STR-REFDOCCT sy-vline 
WA_T8J_JVEC_STR-REFACTIV sy-vline 
WA_T8J_JVEC_STR-REFFIDLN sy-vline 
WA_T8J_JVEC_STR-REFFIDOC sy-vline 
WA_T8J_JVEC_STR-REV_AWTYP sy-vline 
WA_T8J_JVEC_STR-REV_AWORG sy-vline 
WA_T8J_JVEC_STR-REV_AWREF sy-vline 
WA_T8J_JVEC_STR-REV_BELNR sy-vline 
WA_T8J_JVEC_STR-REV_BUZEI sy-vline 
WA_T8J_JVEC_STR-REP_AWTYP sy-vline 
WA_T8J_JVEC_STR-REP_AWORG sy-vline 
WA_T8J_JVEC_STR-REP_AWREF sy-vline 
WA_T8J_JVEC_STR-REP_BELNR sy-vline 
WA_T8J_JVEC_STR-REP_BUZEI sy-vline 
WA_T8J_JVEC_STR-CPUDT sy-vline 
WA_T8J_JVEC_STR-CPUTM sy-vline 
WA_T8J_JVEC_STR-ERNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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