ABAP Select data from SAP table T8JVB17 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JVB17 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 T8JVB17. 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 T8JVB17 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_T8JVB17 TYPE STANDARD TABLE OF T8JVB17,
      WA_T8JVB17 TYPE T8JVB17,
      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: <T8JVB17> TYPE T8JVB17.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JVB17.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JVB17
  INTO TABLE IT_T8JVB17.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JVB17
*  INTO TABLE @DATA(IT_T8JVB172).
*--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_T8JVB17 INDEX 1 INTO DATA(WA_T8JVB172).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JVB17 ASSIGNING <T8JVB17>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JVB17>-FUNDCURR = 1.
<T8JVB17>-FYEAR = 1.
<T8JVB17>-PERIOD = 1.
<T8JVB17>-CEIND = 1.
<T8JVB17>-AFENUM = 1.

ENDLOOP.

LOOP AT IT_T8JVB17 INTO WA_T8JVB17.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JVB17-ACCOUNT, sy-vline,
  WA_T8JVB17-CCENTRE, sy-vline,
  WA_T8JVB17-PROJECT, sy-vline,
  WA_T8JVB17-ORDER, sy-vline,
  WA_T8JVB17-TANGIND, sy-vline,
  WA_T8JVB17-CATIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JVB17 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_T8JVB17 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_T8JVB17 INTO WA_T8JVB17.


*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 FYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-FYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-FYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field AFENUM
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-AFENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-AFENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-ACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CCENTRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-CCENTRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-CCENTRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-PROJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-ORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-ORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-PARTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JVB17-DOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JVB17-DOCNR.
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_T8JVB17_STR, 
FUNDCURR TYPE STRING,
FYEAR TYPE STRING,
PERIOD TYPE STRING,
CEIND TYPE STRING,
AFENUM TYPE STRING,
ACCOUNT TYPE STRING,
CCENTRE TYPE STRING,
PROJECT TYPE STRING,
ORDER TYPE STRING,
TANGIND TYPE STRING,
CATIND TYPE STRING,
PARTN TYPE STRING,
PRODPER TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
LOCALCUR TYPE STRING,
FCMAMT TYPE STRING,
LCMAMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JVB17_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_T8JVB17_STR-FUNDCURR sy-vline 
WA_T8JVB17_STR-FYEAR sy-vline 
WA_T8JVB17_STR-PERIOD sy-vline 
WA_T8JVB17_STR-CEIND sy-vline 
WA_T8JVB17_STR-AFENUM sy-vline 
WA_T8JVB17_STR-ACCOUNT sy-vline 
WA_T8JVB17_STR-CCENTRE sy-vline 
WA_T8JVB17_STR-PROJECT sy-vline 
WA_T8JVB17_STR-ORDER sy-vline 
WA_T8JVB17_STR-TANGIND sy-vline 
WA_T8JVB17_STR-CATIND sy-vline 
WA_T8JVB17_STR-PARTN sy-vline 
WA_T8JVB17_STR-PRODPER sy-vline 
WA_T8JVB17_STR-DOCNR sy-vline 
WA_T8JVB17_STR-DOCLN sy-vline 
WA_T8JVB17_STR-LOCALCUR sy-vline 
WA_T8JVB17_STR-FCMAMT sy-vline 
WA_T8JVB17_STR-LCMAMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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