ABAP Select data from SAP table JBKWTP_RES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JBKWTP_RES
*  INTO TABLE @DATA(IT_JBKWTP_RES2).
*--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_JBKWTP_RES INDEX 1 INTO DATA(WA_JBKWTP_RES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JBKWTP_RES>-R_PAOBJNR = 1.
<JBKWTP_RES>-R_OBJNR = 1.
<JBKWTP_RES>-R_LTEXT = 1.
<JBKWTP_RES>-S_OBJNR = 1.
<JBKWTP_RES>-S_LTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JBKWTP_RES-VKSTA, sy-vline,
  WA_JBKWTP_RES-WKG, sy-vline,
  WA_JBKWTP_RES-WKV, sy-vline,
  WA_JBKWTP_RES-WKF, sy-vline,
  WA_JBKWTP_RES-KWAER, sy-vline,
  WA_JBKWTP_RES-WOG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JBKWTP_RES 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_JBKWTP_RES 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_JBKWTP_RES INTO WA_JBKWTP_RES.


*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 OBJEX, internal->external for field R_OBJNR
CALL FUNCTION 'CONVERSION_EXIT_OBJEX_OUTPUT'
  EXPORTING
    input =                      WA_JBKWTP_RES-R_OBJNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JBKWTP_RES-R_OBJNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBJEX, internal->external for field S_OBJNR
CALL FUNCTION 'CONVERSION_EXIT_OBJEX_OUTPUT'
  EXPORTING
    input =                      WA_JBKWTP_RES-S_OBJNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JBKWTP_RES-S_OBJNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field TARKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JBKWTP_RES-TARKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JBKWTP_RES-TARKZ.
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_JBKWTP_RES_STR, 
R_PAOBJNR TYPE STRING,
R_OBJNR TYPE STRING,
R_LTEXT TYPE STRING,
S_OBJNR TYPE STRING,
S_LTEXT TYPE STRING,
VKSTA TYPE STRING,
WKG TYPE STRING,
WKV TYPE STRING,
WKF TYPE STRING,
KWAER TYPE STRING,
WOG TYPE STRING,
OWAER TYPE STRING,
WTG TYPE STRING,
TWAER TYPE STRING,
MEG TYPE STRING,
LEINH TYPE STRING,
TARKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JBKWTP_RES_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_JBKWTP_RES_STR-R_PAOBJNR sy-vline 
WA_JBKWTP_RES_STR-R_OBJNR sy-vline 
WA_JBKWTP_RES_STR-R_LTEXT sy-vline 
WA_JBKWTP_RES_STR-S_OBJNR sy-vline 
WA_JBKWTP_RES_STR-S_LTEXT sy-vline 
WA_JBKWTP_RES_STR-VKSTA sy-vline 
WA_JBKWTP_RES_STR-WKG sy-vline 
WA_JBKWTP_RES_STR-WKV sy-vline 
WA_JBKWTP_RES_STR-WKF sy-vline 
WA_JBKWTP_RES_STR-KWAER sy-vline 
WA_JBKWTP_RES_STR-WOG sy-vline 
WA_JBKWTP_RES_STR-OWAER sy-vline 
WA_JBKWTP_RES_STR-WTG sy-vline 
WA_JBKWTP_RES_STR-TWAER sy-vline 
WA_JBKWTP_RES_STR-MEG sy-vline 
WA_JBKWTP_RES_STR-LEINH sy-vline 
WA_JBKWTP_RES_STR-TARKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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