ABAP Select data from SAP table T8J4H into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8J4H 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 T8J4H. 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 T8J4H 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_T8J4H TYPE STANDARD TABLE OF T8J4H,
      WA_T8J4H TYPE T8J4H,
      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: <T8J4H> TYPE T8J4H.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8J4H.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8J4H
  INTO TABLE IT_T8J4H.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8J4H
*  INTO TABLE @DATA(IT_T8J4H2).
*--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_T8J4H INDEX 1 INTO DATA(WA_T8J4H2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8J4H ASSIGNING <T8J4H>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8J4H>-MANDT = 1.
<T8J4H>-BUKRS = 1.
<T8J4H>-NOBNO = 1.
<T8J4H>-VNAME = 1.
<T8J4H>-EGRUP = 1.

ENDLOOP.

LOOP AT IT_T8J4H INTO WA_T8J4H.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8J4H-LINE_NUMBER, sy-vline,
  WA_T8J4H-DATAKEY, sy-vline,
  WA_T8J4H-NOPSHARE, sy-vline,
  WA_T8J4H-NBFORMAT, sy-vline,
  WA_T8J4H-NET_TAX, sy-vline,
  WA_T8J4H-GROSS_TAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8J4H 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_T8J4H 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_T8J4H INTO WA_T8J4H.


*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_T8J4H-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J4H-EGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-EGRUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_T8J4H-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-PROJN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J4H-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J4H-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8J4H-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8J4H-HKONT.
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_T8J4H_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
NOBNO TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
LINE_NUMBER TYPE STRING,
DATAKEY TYPE STRING,
NOPSHARE TYPE STRING,
NBFORMAT TYPE STRING,
NET_TAX TYPE STRING,
GROSS_TAX TYPE STRING,
PAYTERMS TYPE STRING,
PAYMETHOD TYPE STRING,
LINE_LEVEL TYPE STRING,
SUMMID TYPE STRING,
LINEID TYPE STRING,
LTEXT TYPE STRING,
LTYPE TYPE STRING,
PROJN TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
SUBITEM TYPE STRING,
HKONT TYPE STRING,
ASSET TYPE STRING,
ASSETRN TYPE STRING,
ASSETCD TYPE STRING,
INVNTRY TYPE STRING,
FCVAL_NET TYPE STRING,
LCVAL_NET TYPE STRING,
FCVAL_GROSS TYPE STRING,
LCVAL_GROSS TYPE STRING,
TOTAL_POINTER TYPE STRING,
NBNET TYPE STRING,
HIGHLITE TYPE STRING,
PAGEB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8J4H_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_T8J4H_STR-MANDT sy-vline 
WA_T8J4H_STR-BUKRS sy-vline 
WA_T8J4H_STR-NOBNO sy-vline 
WA_T8J4H_STR-VNAME sy-vline 
WA_T8J4H_STR-EGRUP sy-vline 
WA_T8J4H_STR-LINE_NUMBER sy-vline 
WA_T8J4H_STR-DATAKEY sy-vline 
WA_T8J4H_STR-NOPSHARE sy-vline 
WA_T8J4H_STR-NBFORMAT sy-vline 
WA_T8J4H_STR-NET_TAX sy-vline 
WA_T8J4H_STR-GROSS_TAX sy-vline 
WA_T8J4H_STR-PAYTERMS sy-vline 
WA_T8J4H_STR-PAYMETHOD sy-vline 
WA_T8J4H_STR-LINE_LEVEL sy-vline 
WA_T8J4H_STR-SUMMID sy-vline 
WA_T8J4H_STR-LINEID sy-vline 
WA_T8J4H_STR-LTEXT sy-vline 
WA_T8J4H_STR-LTYPE sy-vline 
WA_T8J4H_STR-PROJN sy-vline 
WA_T8J4H_STR-KOSTL sy-vline 
WA_T8J4H_STR-AUFNR sy-vline 
WA_T8J4H_STR-SUBITEM sy-vline 
WA_T8J4H_STR-HKONT sy-vline 
WA_T8J4H_STR-ASSET sy-vline 
WA_T8J4H_STR-ASSETRN sy-vline 
WA_T8J4H_STR-ASSETCD sy-vline 
WA_T8J4H_STR-INVNTRY sy-vline 
WA_T8J4H_STR-FCVAL_NET sy-vline 
WA_T8J4H_STR-LCVAL_NET sy-vline 
WA_T8J4H_STR-FCVAL_GROSS sy-vline 
WA_T8J4H_STR-LCVAL_GROSS sy-vline 
WA_T8J4H_STR-TOTAL_POINTER sy-vline 
WA_T8J4H_STR-NBNET sy-vline 
WA_T8J4H_STR-HIGHLITE sy-vline 
WA_T8J4H_STR-PAGEB sy-vline      INTO ld_text SEPARATED BY SPACE.

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