ABAP Select data from SAP table JVSACCIT 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 JVSACCIT 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 JVSACCIT. 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 JVSACCIT 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_JVSACCIT TYPE STANDARD TABLE OF JVSACCIT,
      WA_JVSACCIT TYPE JVSACCIT,
      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: <JVSACCIT> TYPE JVSACCIT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVSACCIT
*  INTO TABLE @DATA(IT_JVSACCIT2).
*--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_JVSACCIT INDEX 1 INTO DATA(WA_JVSACCIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVSACCIT>-VNAME = 1.
<JVSACCIT>-EGRUP = 1.
<JVSACCIT>-ETYPE = 1.
<JVSACCIT>-RECID = 1.
<JVSACCIT>-XREF1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVSACCIT-XREF2, sy-vline,
  WA_JVSACCIT-MWSKZ, sy-vline,
  WA_JVSACCIT-MATNR, sy-vline,
  WA_JVSACCIT-CONDI, sy-vline,
  WA_JVSACCIT-PRODPER, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_JVSACCIT 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_JVSACCIT 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_JVSACCIT INTO WA_JVSACCIT.


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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_JVSACCIT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSACCIT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONDI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVSACCIT-CONDI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVSACCIT-CONDI.
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_JVSACCIT_STR, 
VNAME TYPE STRING,
EGRUP TYPE STRING,
ETYPE TYPE STRING,
RECID TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
MWSKZ TYPE STRING,
MATNR TYPE STRING,
CONDI TYPE STRING,
PRODPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVSACCIT_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_JVSACCIT_STR-VNAME sy-vline 
WA_JVSACCIT_STR-EGRUP sy-vline 
WA_JVSACCIT_STR-ETYPE sy-vline 
WA_JVSACCIT_STR-RECID sy-vline 
WA_JVSACCIT_STR-XREF1 sy-vline 
WA_JVSACCIT_STR-XREF2 sy-vline 
WA_JVSACCIT_STR-MWSKZ sy-vline 
WA_JVSACCIT_STR-MATNR sy-vline 
WA_JVSACCIT_STR-CONDI sy-vline 
WA_JVSACCIT_STR-PRODPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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