ABAP Select data from SAP table KREPSTKE 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 KREPSTKE 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 KREPSTKE. 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 KREPSTKE 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_KREPSTKE TYPE STANDARD TABLE OF KREPSTKE,
      WA_KREPSTKE TYPE KREPSTKE,
      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: <KREPSTKE> TYPE KREPSTKE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KREPSTKE
*  INTO TABLE @DATA(IT_KREPSTKE2).
*--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_KREPSTKE INDEX 1 INTO DATA(WA_KREPSTKE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KREPSTKE ASSIGNING <KREPSTKE>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<KREPSTKE>-KOKRS = 1.
<KREPSTKE>-STAGR = 1.
<KREPSTKE>-MSEHI = 1.
<KREPSTKE>-GRTYP = 1.
<KREPSTKE>-HKTYP = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KREPSTKE-STRUCT, sy-vline,
WA_KREPSTKE-KENNZ, sy-vline,
WA_KREPSTKE-W_FLAG, sy-vline,
WA_KREPSTKE-BEZEI, sy-vline,
WA_KREPSTKE-STGRU, sy-vline,
ENDLOOP. *Add any further fields from structure WA_KREPSTKE 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_KREPSTKE 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_KREPSTKE INTO WA_KREPSTKE. *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 CUNIT, internal->external for field MSEHI CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_KREPSTKE-MSEHI IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_KREPSTKE-MSEHI.
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_KREPSTKE_STR,
KOKRS TYPE STRING,
STAGR TYPE STRING,
MSEHI TYPE STRING,
GRTYP TYPE STRING,
HKTYP TYPE STRING,
STRUCT TYPE STRING,
KENNZ TYPE STRING,
W_FLAG TYPE STRING,
BEZEI TYPE STRING,
STGRU TYPE STRING,END OF T_EKKO_STR. DATA: WA_KREPSTKE_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_KREPSTKE_STR-KOKRS sy-vline
WA_KREPSTKE_STR-STAGR sy-vline
WA_KREPSTKE_STR-MSEHI sy-vline
WA_KREPSTKE_STR-GRTYP sy-vline
WA_KREPSTKE_STR-HKTYP sy-vline
WA_KREPSTKE_STR-STRUCT sy-vline
WA_KREPSTKE_STR-KENNZ sy-vline
WA_KREPSTKE_STR-W_FLAG sy-vline
WA_KREPSTKE_STR-BEZEI sy-vline
WA_KREPSTKE_STR-STGRU sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.