ABAP Select data from SAP table J_7LBELEGCONAIKOPF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LBELEGCONAIKOPF 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_7LBELEGCONAIKOPF. 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_7LBELEGCONAIKOPF 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_7LBELEGCONAIKOPF TYPE STANDARD TABLE OF J_7LBELEGCONAIKOPF,
      WA_J_7LBELEGCONAIKOPF TYPE J_7LBELEGCONAIKOPF,
      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_7LBELEGCONAIKOPF> TYPE J_7LBELEGCONAIKOPF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LBELEGCONAIKOPF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LBELEGCONAIKOPF
  INTO TABLE IT_J_7LBELEGCONAIKOPF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LBELEGCONAIKOPF
*  INTO TABLE @DATA(IT_J_7LBELEGCONAIKOPF2).
*--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_7LBELEGCONAIKOPF INDEX 1 INTO DATA(WA_J_7LBELEGCONAIKOPF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LBELEGCONAIKOPF ASSIGNING <J_7LBELEGCONAIKOPF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LBELEGCONAIKOPF>-MATBEZ = 1.
<J_7LBELEGCONAIKOPF>-DAT1 = 1.
<J_7LBELEGCONAIKOPF>-DAT2 = 1.
<J_7LBELEGCONAIKOPF>-DAT3 = 1.
<J_7LBELEGCONAIKOPF>-JMKNZ = 1.

ENDLOOP.

LOOP AT IT_J_7LBELEGCONAIKOPF INTO WA_J_7LBELEGCONAIKOPF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LBELEGCONAIKOPF-QMKNZ, sy-vline,
  WA_J_7LBELEGCONAIKOPF-MMKNZ, sy-vline,
  WA_J_7LBELEGCONAIKOPF-JKNZ0, sy-vline,
  WA_J_7LBELEGCONAIKOPF-JKNZ1, sy-vline,
  WA_J_7LBELEGCONAIKOPF-JKNZ2, sy-vline,
  WA_J_7LBELEGCONAIKOPF-JKNZ3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LBELEGCONAIKOPF 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_7LBELEGCONAIKOPF 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_7LBELEGCONAIKOPF INTO WA_J_7LBELEGCONAIKOPF.


*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 QGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_7LBELEGCONAIKOPF-QGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LBELEGCONAIKOPF-QGJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_7LBELEGCONAIKOPF-MGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LBELEGCONAIKOPF-MGJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field SMTP_ADDR
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_J_7LBELEGCONAIKOPF-SMTP_ADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LBELEGCONAIKOPF-SMTP_ADDR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_7LBELEGCONAIKOPF-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LBELEGCONAIKOPF-GJAHR.
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_7LBELEGCONAIKOPF_STR, 
MATBEZ TYPE STRING,
DAT1 TYPE STRING,
DAT2 TYPE STRING,
DAT3 TYPE STRING,
JMKNZ TYPE STRING,
QMKNZ TYPE STRING,
MMKNZ TYPE STRING,
JKNZ0 TYPE STRING,
JKNZ1 TYPE STRING,
JKNZ2 TYPE STRING,
JKNZ3 TYPE STRING,
QKNZ1 TYPE STRING,
QKNZ2 TYPE STRING,
QKNZ3 TYPE STRING,
QKNZ4 TYPE STRING,
MKNZ1 TYPE STRING,
MKNZ2 TYPE STRING,
MKNZ3 TYPE STRING,
MKNZ4 TYPE STRING,
MKNZ5 TYPE STRING,
MKNZ6 TYPE STRING,
MKNZ7 TYPE STRING,
MKNZ8 TYPE STRING,
MKNZ9 TYPE STRING,
MKNZ10 TYPE STRING,
MKNZ11 TYPE STRING,
MKNZ12 TYPE STRING,
QGJAHR TYPE STRING,
MGJAHR TYPE STRING,
PROKNZ TYPE STRING,
BENKNZ TYPE STRING,
ZNEHM TYPE STRING,
FIRMA TYPE STRING,
STCD2 TYPE STRING,
STCD1 TYPE STRING,
DEPARTMENT TYPE STRING,
UNAME TYPE STRING,
TELF1 TYPE STRING,
SMTP_ADDR TYPE STRING,
GESSUM TYPE STRING,
FAKTKNZ1 TYPE STRING,
FAKTKNZ2 TYPE STRING,
TESTTEXT TYPE STRING,
BUDAT TYPE STRING,
PREVIEW TYPE STRING,
HOSTID TYPE STRING,
FONAM TYPE STRING,
GJAHR TYPE STRING,
STRAS TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LBELEGCONAIKOPF_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_7LBELEGCONAIKOPF_STR-MATBEZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-DAT1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-DAT2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-DAT3 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-JMKNZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QMKNZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MMKNZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-JKNZ0 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-JKNZ1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-JKNZ2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-JKNZ3 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QKNZ1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QKNZ2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QKNZ3 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QKNZ4 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ3 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ4 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ5 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ6 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ7 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ8 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ9 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ10 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ11 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MKNZ12 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-QGJAHR sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-MGJAHR sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-PROKNZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-BENKNZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-ZNEHM sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-FIRMA sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-STCD2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-STCD1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-DEPARTMENT sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-UNAME sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-TELF1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-SMTP_ADDR sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-GESSUM sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-FAKTKNZ1 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-FAKTKNZ2 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-TESTTEXT sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-BUDAT sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-PREVIEW sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-HOSTID sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-FONAM sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-GJAHR sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-STRAS sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-PSTLZ sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-ORT01 sy-vline 
WA_J_7LBELEGCONAIKOPF_STR-LAND1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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