ABAP Select data from SAP table J_7LKRK2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LKRK2 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_7LKRK2. 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_7LKRK2 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_7LKRK2 TYPE STANDARD TABLE OF J_7LKRK2,
      WA_J_7LKRK2 TYPE J_7LKRK2,
      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_7LKRK2> TYPE J_7LKRK2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LKRK2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LKRK2
  INTO TABLE IT_J_7LKRK2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LKRK2
*  INTO TABLE @DATA(IT_J_7LKRK22).
*--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_7LKRK2 INDEX 1 INTO DATA(WA_J_7LKRK22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LKRK2 ASSIGNING <J_7LKRK2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LKRK2>-MATNR = 1.
<J_7LKRK2>-KSCHL = 1.
<J_7LKRK2>-KAPPL = 1.
<J_7LKRK2>-KVEWE = 1.
<J_7LKRK2>-KNUMH = 1.

ENDLOOP.

LOOP AT IT_J_7LKRK2 INTO WA_J_7LKRK2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LKRK2-KOTABNR, sy-vline,
  WA_J_7LKRK2-DATAB, sy-vline,
  WA_J_7LKRK2-DATBI, sy-vline,
  WA_J_7LKRK2-BUKRS, sy-vline,
  WA_J_7LKRK2-LAND1, sy-vline,
  WA_J_7LKRK2-KOPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LKRK2 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_7LKRK2 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_7LKRK2 INTO WA_J_7LKRK2.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KOTABNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KONMS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-SAKN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-SAKN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-SAKN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-SAKN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKRK2-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKRK2-KONMS.
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_7LKRK2_STR, 
MATNR TYPE STRING,
KSCHL TYPE STRING,
KAPPL TYPE STRING,
KVEWE TYPE STRING,
KNUMH TYPE STRING,
KOTABNR TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
KOPOS TYPE STRING,
STFKZ TYPE STRING,
KSTBM TYPE STRING,
KONMS TYPE STRING,
KBETR TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
MEINS TYPE STRING,
LOEVM_KO TYPE STRING,
KONV TYPE STRING,
MANDT TYPE STRING,
KNUMV TYPE STRING,
KPOSN TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
KDATU TYPE STRING,
KRECH TYPE STRING,
KAWRT TYPE STRING,
KBETR TYPE STRING,
WAERS TYPE STRING,
KKURS TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
KNTYP TYPE STRING,
KSTAT TYPE STRING,
KNPRS TYPE STRING,
KRUEK TYPE STRING,
KRELI TYPE STRING,
KHERK TYPE STRING,
KGRPE TYPE STRING,
KOUPD TYPE STRING,
KOLNR TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
KVSL1 TYPE STRING,
SAKN1 TYPE STRING,
MWSK1 TYPE STRING,
KVSL2 TYPE STRING,
SAKN2 TYPE STRING,
MWSK2 TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
KDIFF TYPE STRING,
KWERT TYPE STRING,
KSTEU TYPE STRING,
KINAK TYPE STRING,
KOAID TYPE STRING,
ZAEKO TYPE STRING,
KMXAW TYPE STRING,
KMXWR TYPE STRING,
KFAKTOR TYPE STRING,
KDUPL TYPE STRING,
KFAKTOR1 TYPE STRING,
KZBZG TYPE STRING,
KSTBS TYPE STRING,
KONMS TYPE STRING,
KONWS TYPE STRING,
KAWRT_K TYPE STRING,
KWAEH TYPE STRING,
KWERT_K TYPE STRING,
KFKIV TYPE STRING,
KVARC TYPE STRING,
KMPRS TYPE STRING,
PRSQU TYPE STRING,
VARCOND TYPE STRING,
STUFE TYPE STRING,
WEGXX TYPE STRING,
KTREL TYPE STRING,
MDFLG TYPE STRING,
TXJLV TYPE STRING,
KBFLAG TYPE STRING,
KOLNR3 TYPE STRING,
CPF_GUID TYPE STRING,
KAQTY TYPE STRING,
VAL_ZERO TYPE STRING,
IS_ACCT_DETN_RELEVANT TYPE STRING,
TAX_COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LKRK2_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_7LKRK2_STR-MATNR sy-vline 
WA_J_7LKRK2_STR-KSCHL sy-vline 
WA_J_7LKRK2_STR-KAPPL sy-vline 
WA_J_7LKRK2_STR-KVEWE sy-vline 
WA_J_7LKRK2_STR-KNUMH sy-vline 
WA_J_7LKRK2_STR-KOTABNR sy-vline 
WA_J_7LKRK2_STR-DATAB sy-vline 
WA_J_7LKRK2_STR-DATBI sy-vline 
WA_J_7LKRK2_STR-BUKRS sy-vline 
WA_J_7LKRK2_STR-LAND1 sy-vline 
WA_J_7LKRK2_STR-KOPOS sy-vline 
WA_J_7LKRK2_STR-STFKZ sy-vline 
WA_J_7LKRK2_STR-KSTBM sy-vline 
WA_J_7LKRK2_STR-KONMS sy-vline 
WA_J_7LKRK2_STR-KBETR sy-vline 
WA_J_7LKRK2_STR-KONWA sy-vline 
WA_J_7LKRK2_STR-KPEIN sy-vline 
WA_J_7LKRK2_STR-KMEIN sy-vline 
WA_J_7LKRK2_STR-KUMZA sy-vline 
WA_J_7LKRK2_STR-KUMNE sy-vline 
WA_J_7LKRK2_STR-MEINS sy-vline 
WA_J_7LKRK2_STR-LOEVM_KO sy-vline 
WA_J_7LKRK2_STR-KONV sy-vline 
WA_J_7LKRK2_STR-MANDT sy-vline 
WA_J_7LKRK2_STR-KNUMV sy-vline 
WA_J_7LKRK2_STR-KPOSN sy-vline 
WA_J_7LKRK2_STR-STUNR sy-vline 
WA_J_7LKRK2_STR-ZAEHK sy-vline 
WA_J_7LKRK2_STR-KAPPL sy-vline 
WA_J_7LKRK2_STR-KSCHL sy-vline 
WA_J_7LKRK2_STR-KDATU sy-vline 
WA_J_7LKRK2_STR-KRECH sy-vline 
WA_J_7LKRK2_STR-KAWRT sy-vline 
WA_J_7LKRK2_STR-KBETR sy-vline 
WA_J_7LKRK2_STR-WAERS sy-vline 
WA_J_7LKRK2_STR-KKURS sy-vline 
WA_J_7LKRK2_STR-KPEIN sy-vline 
WA_J_7LKRK2_STR-KMEIN sy-vline 
WA_J_7LKRK2_STR-KUMZA sy-vline 
WA_J_7LKRK2_STR-KUMNE sy-vline 
WA_J_7LKRK2_STR-KNTYP sy-vline 
WA_J_7LKRK2_STR-KSTAT sy-vline 
WA_J_7LKRK2_STR-KNPRS sy-vline 
WA_J_7LKRK2_STR-KRUEK sy-vline 
WA_J_7LKRK2_STR-KRELI sy-vline 
WA_J_7LKRK2_STR-KHERK sy-vline 
WA_J_7LKRK2_STR-KGRPE sy-vline 
WA_J_7LKRK2_STR-KOUPD sy-vline 
WA_J_7LKRK2_STR-KOLNR sy-vline 
WA_J_7LKRK2_STR-KNUMH sy-vline 
WA_J_7LKRK2_STR-KOPOS sy-vline 
WA_J_7LKRK2_STR-KVSL1 sy-vline 
WA_J_7LKRK2_STR-SAKN1 sy-vline 
WA_J_7LKRK2_STR-MWSK1 sy-vline 
WA_J_7LKRK2_STR-KVSL2 sy-vline 
WA_J_7LKRK2_STR-SAKN2 sy-vline 
WA_J_7LKRK2_STR-MWSK2 sy-vline 
WA_J_7LKRK2_STR-LIFNR sy-vline 
WA_J_7LKRK2_STR-KUNNR sy-vline 
WA_J_7LKRK2_STR-KDIFF sy-vline 
WA_J_7LKRK2_STR-KWERT sy-vline 
WA_J_7LKRK2_STR-KSTEU sy-vline 
WA_J_7LKRK2_STR-KINAK sy-vline 
WA_J_7LKRK2_STR-KOAID sy-vline 
WA_J_7LKRK2_STR-ZAEKO sy-vline 
WA_J_7LKRK2_STR-KMXAW sy-vline 
WA_J_7LKRK2_STR-KMXWR sy-vline 
WA_J_7LKRK2_STR-KFAKTOR sy-vline 
WA_J_7LKRK2_STR-KDUPL sy-vline 
WA_J_7LKRK2_STR-KFAKTOR1 sy-vline 
WA_J_7LKRK2_STR-KZBZG sy-vline 
WA_J_7LKRK2_STR-KSTBS sy-vline 
WA_J_7LKRK2_STR-KONMS sy-vline 
WA_J_7LKRK2_STR-KONWS sy-vline 
WA_J_7LKRK2_STR-KAWRT_K sy-vline 
WA_J_7LKRK2_STR-KWAEH sy-vline 
WA_J_7LKRK2_STR-KWERT_K sy-vline 
WA_J_7LKRK2_STR-KFKIV sy-vline 
WA_J_7LKRK2_STR-KVARC sy-vline 
WA_J_7LKRK2_STR-KMPRS sy-vline 
WA_J_7LKRK2_STR-PRSQU sy-vline 
WA_J_7LKRK2_STR-VARCOND sy-vline 
WA_J_7LKRK2_STR-STUFE sy-vline 
WA_J_7LKRK2_STR-WEGXX sy-vline 
WA_J_7LKRK2_STR-KTREL sy-vline 
WA_J_7LKRK2_STR-MDFLG sy-vline 
WA_J_7LKRK2_STR-TXJLV sy-vline 
WA_J_7LKRK2_STR-KBFLAG sy-vline 
WA_J_7LKRK2_STR-KOLNR3 sy-vline 
WA_J_7LKRK2_STR-CPF_GUID sy-vline 
WA_J_7LKRK2_STR-KAQTY sy-vline 
WA_J_7LKRK2_STR-VAL_ZERO sy-vline 
WA_J_7LKRK2_STR-IS_ACCT_DETN_RELEVANT sy-vline 
WA_J_7LKRK2_STR-TAX_COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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