ABAP Select data from SAP table J_7LKP01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LKP01 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_7LKP01. 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_7LKP01 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_7LKP01 TYPE STANDARD TABLE OF J_7LKP01,
      WA_J_7LKP01 TYPE J_7LKP01,
      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_7LKP01> TYPE J_7LKP01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LKP01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LKP01
  INTO TABLE IT_J_7LKP01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LKP01
*  INTO TABLE @DATA(IT_J_7LKP012).
*--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_7LKP01 INDEX 1 INTO DATA(WA_J_7LKP012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LKP01 ASSIGNING <J_7LKP01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LKP01>-PFORMEL = 1.
<J_7LKP01>-PKOART = 1.
<J_7LKP01>-GRUPPE = 1.
<J_7LKP01>-PFORMVW = 1.
<J_7LKP01>-RUNDG = 1.

ENDLOOP.

LOOP AT IT_J_7LKP01 INTO WA_J_7LKP01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LKP01-POSNVW, sy-vline,
  WA_J_7LKP01-POSARVW, sy-vline,
  WA_J_7LKP01-POSAR, sy-vline,
  WA_J_7LKP01-POSARS, sy-vline,
  WA_J_7LKP01-PKPROZ, sy-vline,
  WA_J_7LKP01-PKPROZS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LKP01 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_7LKP01 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_7LKP01 INTO WA_J_7LKP01.


*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 CUNIT, internal->external for field PKMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKP01-PKMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKP01-PKMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINSA
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKP01-MEINSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKP01-MEINSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINSV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKP01-MEINSV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKP01-MEINSV.
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_7LKP01_STR, 
PFORMEL TYPE STRING,
PKOART TYPE STRING,
GRUPPE TYPE STRING,
PFORMVW TYPE STRING,
RUNDG TYPE STRING,
POSNVW TYPE STRING,
POSARVW TYPE STRING,
POSAR TYPE STRING,
POSARS TYPE STRING,
PKPROZ TYPE STRING,
PKPROZS TYPE STRING,
PGAAWR_IN TYPE STRING,
PGAAWE_IN TYPE STRING,
PGAAWA_IN TYPE STRING,
PGAAWR TYPE STRING,
PGAAWE TYPE STRING,
PGAAWA TYPE STRING,
PKPEIN TYPE STRING,
PKMEIN TYPE STRING,
FMENGA TYPE STRING,
MEINSA TYPE STRING,
FMENGV TYPE STRING,
MEINSV TYPE STRING,
PGAAKX TYPE STRING,
PGAAIX TYPE STRING,
PGAAX TYPE STRING,
PGKEYX TYPE STRING,
PGSPLX TYPE STRING,
FBPFORMEL TYPE STRING,
PFARTMX TYPE STRING,
WAERE TYPE STRING,
WAERK TYPE STRING,
WAERA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LKP01_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_7LKP01_STR-PFORMEL sy-vline 
WA_J_7LKP01_STR-PKOART sy-vline 
WA_J_7LKP01_STR-GRUPPE sy-vline 
WA_J_7LKP01_STR-PFORMVW sy-vline 
WA_J_7LKP01_STR-RUNDG sy-vline 
WA_J_7LKP01_STR-POSNVW sy-vline 
WA_J_7LKP01_STR-POSARVW sy-vline 
WA_J_7LKP01_STR-POSAR sy-vline 
WA_J_7LKP01_STR-POSARS sy-vline 
WA_J_7LKP01_STR-PKPROZ sy-vline 
WA_J_7LKP01_STR-PKPROZS sy-vline 
WA_J_7LKP01_STR-PGAAWR_IN sy-vline 
WA_J_7LKP01_STR-PGAAWE_IN sy-vline 
WA_J_7LKP01_STR-PGAAWA_IN sy-vline 
WA_J_7LKP01_STR-PGAAWR sy-vline 
WA_J_7LKP01_STR-PGAAWE sy-vline 
WA_J_7LKP01_STR-PGAAWA sy-vline 
WA_J_7LKP01_STR-PKPEIN sy-vline 
WA_J_7LKP01_STR-PKMEIN sy-vline 
WA_J_7LKP01_STR-FMENGA sy-vline 
WA_J_7LKP01_STR-MEINSA sy-vline 
WA_J_7LKP01_STR-FMENGV sy-vline 
WA_J_7LKP01_STR-MEINSV sy-vline 
WA_J_7LKP01_STR-PGAAKX sy-vline 
WA_J_7LKP01_STR-PGAAIX sy-vline 
WA_J_7LKP01_STR-PGAAX sy-vline 
WA_J_7LKP01_STR-PGKEYX sy-vline 
WA_J_7LKP01_STR-PGSPLX sy-vline 
WA_J_7LKP01_STR-FBPFORMEL sy-vline 
WA_J_7LKP01_STR-PFARTMX sy-vline 
WA_J_7LKP01_STR-WAERE sy-vline 
WA_J_7LKP01_STR-WAERK sy-vline 
WA_J_7LKP01_STR-WAERA sy-vline      INTO ld_text SEPARATED BY SPACE.

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