ABAP Select data from SAP table V_TKEPTR 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 V_TKEPTR 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 V_TKEPTR. 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 V_TKEPTR 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_V_TKEPTR TYPE STANDARD TABLE OF V_TKEPTR,
      WA_V_TKEPTR TYPE V_TKEPTR,
      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: <V_TKEPTR> TYPE V_TKEPTR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TKEPTR
*  INTO TABLE @DATA(IT_V_TKEPTR2).
*--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_V_TKEPTR INDEX 1 INTO DATA(WA_V_TKEPTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_TKEPTR ASSIGNING <V_TKEPTR>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TKEPTR>-MANDT = 1.
<V_TKEPTR>-APPLCLASS = 1.
<V_TKEPTR>-SUBCLASS = 1.
<V_TKEPTR>-TABNAME = 1.
<V_TKEPTR>-TREVAL = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TKEPTR-TEXT, sy-vline,
WA_V_TKEPTR-REF_TREVAL, sy-vline,
WA_V_TKEPTR-CRNAM, sy-vline,
WA_V_TKEPTR-CRDAT, sy-vline,
WA_V_TKEPTR-UPNAM, sy-vline,
WA_V_TKEPTR-UPDAT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_V_TKEPTR 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_V_TKEPTR 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_V_TKEPTR INTO WA_V_TKEPTR. *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 TREVAL CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_V_TKEPTR-TREVAL IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_V_TKEPTR-TREVAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PERI7, internal->external for field APERIO CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT' EXPORTING input = WA_V_TKEPTR-APERIO IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_V_TKEPTR-APERIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field EPERIO CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT' EXPORTING input = WA_V_TKEPTR-EPERIO IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_V_TKEPTR-EPERIO.
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_V_TKEPTR_STR,
MANDT TYPE STRING,
APPLCLASS TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
TREVAL TYPE STRING,
TEXT TYPE STRING,
REF_TREVAL TYPE STRING,
CRNAM TYPE STRING,
CRDAT TYPE STRING,
UPNAM TYPE STRING,
UPDAT TYPE STRING,
STATUS TYPE STRING,
TYPE TYPE STRING,
PERFLAG TYPE STRING,
PERIV TYPE STRING,
APERIO TYPE STRING,
EPERIO TYPE STRING,END OF T_EKKO_STR. DATA: WA_V_TKEPTR_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_V_TKEPTR_STR-MANDT sy-vline
WA_V_TKEPTR_STR-APPLCLASS sy-vline
WA_V_TKEPTR_STR-SUBCLASS sy-vline
WA_V_TKEPTR_STR-TABNAME sy-vline
WA_V_TKEPTR_STR-TREVAL sy-vline
WA_V_TKEPTR_STR-TEXT sy-vline
WA_V_TKEPTR_STR-REF_TREVAL sy-vline
WA_V_TKEPTR_STR-CRNAM sy-vline
WA_V_TKEPTR_STR-CRDAT sy-vline
WA_V_TKEPTR_STR-UPNAM sy-vline
WA_V_TKEPTR_STR-UPDAT sy-vline
WA_V_TKEPTR_STR-STATUS sy-vline
WA_V_TKEPTR_STR-TYPE sy-vline
WA_V_TKEPTR_STR-PERFLAG sy-vline
WA_V_TKEPTR_STR-PERIV sy-vline
WA_V_TKEPTR_STR-APERIO sy-vline
WA_V_TKEPTR_STR-EPERIO sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.