ABAP Select data from SAP table RKWA into internal table
Get Example source ABAP code based on a different SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP RKWA 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 RKWA. 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 RKWA 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_RKWA TYPE STANDARD TABLE OF RKWA,
WA_RKWA TYPE RKWA,
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: <RKWA> TYPE RKWA.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_RKWA.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM RKWA
INTO TABLE IT_RKWA.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM RKWA
* INTO TABLE @DATA(IT_RKWA2).
*--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_RKWA INDEX 1 INTO DATA(WA_RKWA2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RKWA ASSIGNING <RKWA>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<RKWA>-MANDT = 1.
<RKWA>-MBLNR = 1.
<RKWA>-MJAHR = 1.
<RKWA>-ZEILE = 1.
<RKWA>-STATUS = 1.
ENDLOOP. LOOP AT IT_RKWA INTO WA_RKWA. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_RKWA-BLDAT, sy-vline,
WA_RKWA-BUDAT, sy-vline,
WA_RKWA-BUKRS, sy-vline,
WA_RKWA-SOBKZ, sy-vline,
WA_RKWA-LIFNR, sy-vline,
WA_RKWA-WERKS, sy-vline.
ENDLOOP. *Add any further fields from structure WA_RKWA 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_RKWA 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_RKWA INTO WA_RKWA. *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 MBLNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RKWA-MBLNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-MBLNR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit GJAHR, internal->external for field MJAHR CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT' EXPORTING input = WA_RKWA-MJAHR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-MJAHR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field LIFNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RKWA-LIFNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-LIFNR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit MATN1, internal->external for field MATNR CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT' EXPORTING input = WA_RKWA-MATNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-MATNR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit CUNIT, internal->external for field BSTME CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_RKWA-BSTME IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-BSTME.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field HKONT CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RKWA-HKONT IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-HKONT.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field BELNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RKWA-BELNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-BELNR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit GJAHR, internal->external for field GJAHR CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT' EXPORTING input = WA_RKWA-GJAHR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-GJAHR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit ALPHA, internal->external for field PRCTR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RKWA-PRCTR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-PRCTR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit CUNIT, internal->external for field /CWM/MEINS CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_RKWA-/CWM/MEINS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-/CWM/MEINS.
WRITE:/ 'New Value:', ld_input.
*Conversion exit CUNIT, internal->external for field /CWM/ERFME CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_RKWA-/CWM/ERFME IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RKWA-/CWM/ERFME.
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_RKWA_STR,
MANDT TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
STATUS TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
SOBKZ TYPE STRING,
LIFNR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
SHKZG TYPE STRING,
GSBER TYPE STRING,
BWAER TYPE STRING,
WRBTR TYPE STRING,
BSTME TYPE STRING,
BSTMG TYPE STRING,
HKONT TYPE STRING,
MWSKZ TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
NAVNW TYPE STRING,
PRCTR TYPE STRING,
/CWM/MENGE TYPE STRING,
/CWM/MEINS TYPE STRING,
/CWM/ERFMG TYPE STRING,
/CWM/ERFME TYPE STRING,
TAX_COUNTRY TYPE STRING,END OF T_EKKO_STR. DATA: WA_RKWA_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_RKWA_STR-MANDT sy-vline
WA_RKWA_STR-MBLNR sy-vline
WA_RKWA_STR-MJAHR sy-vline
WA_RKWA_STR-ZEILE sy-vline
WA_RKWA_STR-STATUS sy-vline
WA_RKWA_STR-BLDAT sy-vline
WA_RKWA_STR-BUDAT sy-vline
WA_RKWA_STR-BUKRS sy-vline
WA_RKWA_STR-SOBKZ sy-vline
WA_RKWA_STR-LIFNR sy-vline
WA_RKWA_STR-WERKS sy-vline
WA_RKWA_STR-MATNR sy-vline
WA_RKWA_STR-SHKZG sy-vline
WA_RKWA_STR-GSBER sy-vline
WA_RKWA_STR-BWAER sy-vline
WA_RKWA_STR-WRBTR sy-vline
WA_RKWA_STR-BSTME sy-vline
WA_RKWA_STR-BSTMG sy-vline
WA_RKWA_STR-HKONT sy-vline
WA_RKWA_STR-MWSKZ sy-vline
WA_RKWA_STR-BELNR sy-vline
WA_RKWA_STR-GJAHR sy-vline
WA_RKWA_STR-BUZEI sy-vline
WA_RKWA_STR-NAVNW sy-vline
WA_RKWA_STR-PRCTR sy-vline
WA_RKWA_STR-/CWM/MENGE sy-vline
WA_RKWA_STR-/CWM/MEINS sy-vline
WA_RKWA_STR-/CWM/ERFMG sy-vline
WA_RKWA_STR-/CWM/ERFME sy-vline
WA_RKWA_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.
