ABAP Select data from SAP table KSC20 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 KSC20 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 KSC20. 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 KSC20 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_KSC20 TYPE STANDARD TABLE OF KSC20, WA_KSC20 TYPE KSC20, 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: <KSC20> TYPE KSC20. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_KSC20. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM KSC20 INTO TABLE IT_KSC20. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM KSC20 * INTO TABLE @DATA(IT_KSC202). *--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_KSC20 INDEX 1 INTO DATA(WA_KSC202). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_KSC20 ASSIGNING <KSC20>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<KSC20>-SCZUO = 1.
<KSC20>-PERIO = 1.
<KSC20>-OBJNR = 1.
<KSC20>-AQZIF = 1.
<KSC20>-AFZIF = 1.
ENDLOOP. LOOP AT IT_KSC20 INTO WA_KSC20. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, ENDLOOP. *Add any further fields from structure WA_KSC20 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_KSC20 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_KSC20 INTO WA_KSC20. *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 SCZUO CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_KSC20-SCZUO IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KSC20-SCZUO.
WRITE:/ 'New Value:', ld_input.
*Conversion exit AE150, internal->external for field AQZIF CALL FUNCTION 'CONVERSION_EXIT_AE150_OUTPUT' EXPORTING input = WA_KSC20-AQZIF IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KSC20-AQZIF.
WRITE:/ 'New Value:', ld_input.
*Conversion exit AE150, internal->external for field AFZIF CALL FUNCTION 'CONVERSION_EXIT_AE150_OUTPUT' EXPORTING input = WA_KSC20-AFZIF IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KSC20-AFZIF.
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_KSC20_STR,
SCZUO TYPE STRING,
PERIO TYPE STRING,
OBJNR TYPE STRING,
AQZIF TYPE STRING,
AFZIF TYPE STRING,END OF T_EKKO_STR. DATA: WA_KSC20_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_KSC20_STR-SCZUO sy-vline
WA_KSC20_STR-PERIO sy-vline
WA_KSC20_STR-OBJNR sy-vline
WA_KSC20_STR-AQZIF sy-vline
WA_KSC20_STR-AFZIF sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.