ABAP Select data from SAP table KAST 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 KAST 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 KAST. 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 KAST 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_KAST TYPE STANDARD TABLE OF KAST,
      WA_KAST TYPE KAST,
      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: <KAST> TYPE KAST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAST
*  INTO TABLE @DATA(IT_KAST2).
*--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_KAST INDEX 1 INTO DATA(WA_KAST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KAST ASSIGNING <KAST>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAST>-VBELN = 1.
<KAST>-VBPOS = 1.
<KAST>-MATNR = 1.
<KAST>-WERKS = 1.
<KAST>-STLTY = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAST-STLNR, sy-vline,
WA_KAST-ARANG, sy-vline,
WA_KAST-STLAN, sy-vline,
WA_KAST-STALT, sy-vline,
WA_KAST-ALTST, sy-vline,
WA_KAST-VARST, sy-vline.
ENDLOOP. *Add any further fields from structure WA_KAST 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_KAST 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_KAST INTO WA_KAST. *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 VBELN CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_KAST-VBELN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KAST-VBELN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field STLNR CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT' EXPORTING input = WA_KAST-STLNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KAST-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STALT CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_KAST-STALT IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KAST-STALT.
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_KAST_STR,
VBELN TYPE STRING,
VBPOS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
ARANG TYPE STRING,
STLAN TYPE STRING,
STALT TYPE STRING,
ALTST TYPE STRING,
VARST TYPE STRING,
KOMST TYPE STRING,
HISDT TYPE STRING,
TSTMP TYPE STRING,END OF T_EKKO_STR. DATA: WA_KAST_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_KAST_STR-VBELN sy-vline
WA_KAST_STR-VBPOS sy-vline
WA_KAST_STR-MATNR sy-vline
WA_KAST_STR-WERKS sy-vline
WA_KAST_STR-STLTY sy-vline
WA_KAST_STR-STLNR sy-vline
WA_KAST_STR-ARANG sy-vline
WA_KAST_STR-STLAN sy-vline
WA_KAST_STR-STALT sy-vline
WA_KAST_STR-ALTST sy-vline
WA_KAST_STR-VARST sy-vline
WA_KAST_STR-KOMST sy-vline
WA_KAST_STR-HISDT sy-vline
WA_KAST_STR-TSTMP sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.