ABAP Select data from SAP table J_3R_SP_LEDGER_MODIF_LINE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3R_SP_LEDGER_MODIF_LINE 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 J_3R_SP_LEDGER_MODIF_LINE. 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 J_3R_SP_LEDGER_MODIF_LINE 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_J_3R_SP_LEDGER_MODIF_LINE TYPE STANDARD TABLE OF J_3R_SP_LEDGER_MODIF_LINE,
      WA_J_3R_SP_LEDGER_MODIF_LINE TYPE J_3R_SP_LEDGER_MODIF_LINE,
      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: <J_3R_SP_LEDGER_MODIF_LINE> TYPE J_3R_SP_LEDGER_MODIF_LINE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3R_SP_LEDGER_MODIF_LINE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3R_SP_LEDGER_MODIF_LINE
  INTO TABLE IT_J_3R_SP_LEDGER_MODIF_LINE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3R_SP_LEDGER_MODIF_LINE
*  INTO TABLE @DATA(IT_J_3R_SP_LEDGER_MODIF_LINE2).
*--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_J_3R_SP_LEDGER_MODIF_LINE INDEX 1 INTO DATA(WA_J_3R_SP_LEDGER_MODIF_LINE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3R_SP_LEDGER_MODIF_LINE ASSIGNING <J_3R_SP_LEDGER_MODIF_LINE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3R_SP_LEDGER_MODIF_LINE>-TAB_INDEX = 1.
<J_3R_SP_LEDGER_MODIF_LINE>-NUM_LINE = 1.
<J_3R_SP_LEDGER_MODIF_LINE>-BUDAT_INV = 1.
<J_3R_SP_LEDGER_MODIF_LINE>-BLDAT_INV = 1.
<J_3R_SP_LEDGER_MODIF_LINE>-BUDAT_PAY = 1.

ENDLOOP.

LOOP AT IT_J_3R_SP_LEDGER_MODIF_LINE INTO WA_J_3R_SP_LEDGER_MODIF_LINE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3R_SP_LEDGER_MODIF_LINE-BLDAT_PAY, sy-vline,
  WA_J_3R_SP_LEDGER_MODIF_LINE-NAME1_CRED, sy-vline,
  WA_J_3R_SP_LEDGER_MODIF_LINE-NAME2_CRED, sy-vline,
  WA_J_3R_SP_LEDGER_MODIF_LINE-NAME3_CRED, sy-vline,
  WA_J_3R_SP_LEDGER_MODIF_LINE-NAME4_CRED, sy-vline,
  WA_J_3R_SP_LEDGER_MODIF_LINE-NAME1_CRED_R, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3R_SP_LEDGER_MODIF_LINE 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_J_3R_SP_LEDGER_MODIF_LINE 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_J_3R_SP_LEDGER_MODIF_LINE INTO WA_J_3R_SP_LEDGER_MODIF_LINE.


*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 NUM_LINE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3R_SP_LEDGER_MODIF_LINE-NUM_LINE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3R_SP_LEDGER_MODIF_LINE-NUM_LINE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR_ORIGPAY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3R_SP_LEDGER_MODIF_LINE-BELNR_ORIGPAY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3R_SP_LEDGER_MODIF_LINE-BELNR_ORIGPAY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR_ORIGPAY
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3R_SP_LEDGER_MODIF_LINE-GJAHR_ORIGPAY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3R_SP_LEDGER_MODIF_LINE-GJAHR_ORIGPAY.
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_J_3R_SP_LEDGER_MODIF_LINE_STR, 
TAB_INDEX TYPE STRING,
NUM_LINE TYPE STRING,
BUDAT_INV TYPE STRING,
BLDAT_INV TYPE STRING,
BUDAT_PAY TYPE STRING,
BLDAT_PAY TYPE STRING,
NAME1_CRED TYPE STRING,
NAME2_CRED TYPE STRING,
NAME3_CRED TYPE STRING,
NAME4_CRED TYPE STRING,
NAME1_CRED_R TYPE STRING,
NAME2_CRED_R TYPE STRING,
NAME3_CRED_R TYPE STRING,
NAME4_CRED_R TYPE STRING,
STCD1_CRED TYPE STRING,
STCD3_CRED TYPE STRING,
BELNR_ORIGPAY TYPE STRING,
GJAHR_ORIGPAY TYPE STRING,
BUDAT_ORIGPAY TYPE STRING,
BLDAT_ORIGPAY TYPE STRING,
MM_INV_BUDAT TYPE STRING,
EXT_NUMBER TYPE STRING,
FULLNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3R_SP_LEDGER_MODIF_LINE_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_J_3R_SP_LEDGER_MODIF_LINE_STR-TAB_INDEX sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NUM_LINE sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BUDAT_INV sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BLDAT_INV sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BUDAT_PAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BLDAT_PAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME1_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME2_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME3_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME4_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME1_CRED_R sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME2_CRED_R sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME3_CRED_R sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-NAME4_CRED_R sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-STCD1_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-STCD3_CRED sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BELNR_ORIGPAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-GJAHR_ORIGPAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BUDAT_ORIGPAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-BLDAT_ORIGPAY sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-MM_INV_BUDAT sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-EXT_NUMBER sy-vline 
WA_J_3R_SP_LEDGER_MODIF_LINE_STR-FULLNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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