ABAP Select data from SAP table JVA_MDR_JOA_DATA into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVA_MDR_JOA_DATA
*  INTO TABLE @DATA(IT_JVA_MDR_JOA_DATA2).
*--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_JVA_MDR_JOA_DATA INDEX 1 INTO DATA(WA_JVA_MDR_JOA_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVA_MDR_JOA_DATA>-T8JU = 1.
<JVA_MDR_JOA_DATA>-T8JUT = 1.
<JVA_MDR_JOA_DATA>-T8J9A = 1.
<JVA_MDR_JOA_DATA>-T8J9B = 1.
<JVA_MDR_JOA_DATA>-T8J9C = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVA_MDR_JOA_DATA-T8JOVRP, sy-vline,
  WA_JVA_MDR_JOA_DATA-T8JLP, sy-vline,
  WA_JVA_MDR_JOA_DATA-T8J8D, sy-vline,
  WA_JVA_MDR_JOA_DATA-T8J8F, sy-vline,
  WA_JVA_MDR_JOA_DATA-T8J8H, sy-vline,
  WA_JVA_MDR_JOA_DATA-T8J8I, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVA_MDR_JOA_DATA 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_JVA_MDR_JOA_DATA 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_JVA_MDR_JOA_DATA INTO WA_JVA_MDR_JOA_DATA.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_JVA_MDR_JOA_DATA_STR, 
T8JU TYPE STRING,
T8JUT TYPE STRING,
T8J9A TYPE STRING,
T8J9B TYPE STRING,
T8J9C TYPE STRING,
T8JOVRP TYPE STRING,
T8JLP TYPE STRING,
T8J8D TYPE STRING,
T8J8F TYPE STRING,
T8J8H TYPE STRING,
T8J8I TYPE STRING,
T8J8J TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVA_MDR_JOA_DATA_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_JVA_MDR_JOA_DATA_STR-T8JU sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8JUT sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J9A sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J9B sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J9C sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8JOVRP sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8JLP sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J8D sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J8F sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J8H sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J8I sy-vline 
WA_JVA_MDR_JOA_DATA_STR-T8J8J sy-vline      INTO ld_text SEPARATED BY SPACE.

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