ABAP Select data from SAP table CDPOS 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 CDPOS 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 CDPOS. 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 CDPOS 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_CDPOS TYPE STANDARD TABLE OF CDPOS,
      WA_CDPOS TYPE CDPOS,
      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: <CDPOS> TYPE CDPOS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDPOS
*  INTO TABLE @DATA(IT_CDPOS2).
*--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_CDPOS INDEX 1 INTO DATA(WA_CDPOS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CDPOS ASSIGNING <CDPOS>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDPOS>-MANDANT = 1.
<CDPOS>-OBJECTCLAS = 1.
<CDPOS>-OBJECTID = 1.
<CDPOS>-CHANGENR = 1.
<CDPOS>-TABNAME = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDPOS-TABKEY, sy-vline,
WA_CDPOS-FNAME, sy-vline,
WA_CDPOS-CHNGIND, sy-vline,
WA_CDPOS-TEXT_CASE, sy-vline,
WA_CDPOS-UNIT_OLD, sy-vline,
WA_CDPOS-UNIT_NEW, sy-vline.
ENDLOOP. *Add any further fields from structure WA_CDPOS 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_CDPOS 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_CDPOS INTO WA_CDPOS. *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 OBJECTCLAS CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_CDPOS-OBJECTCLAS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_CDPOS-OBJECTCLAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGENR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_CDPOS-CHANGENR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_CDPOS-CHANGENR.
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_CDPOS_STR,
MANDANT TYPE STRING,
OBJECTCLAS TYPE STRING,
OBJECTID TYPE STRING,
CHANGENR TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
FNAME TYPE STRING,
CHNGIND TYPE STRING,
TEXT_CASE TYPE STRING,
UNIT_OLD TYPE STRING,
UNIT_NEW TYPE STRING,
CUKY_OLD TYPE STRING,
CUKY_NEW TYPE STRING,
VALUE_NEW TYPE STRING,
VALUE_OLD TYPE STRING,END OF T_EKKO_STR. DATA: WA_CDPOS_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_CDPOS_STR-MANDANT sy-vline
WA_CDPOS_STR-OBJECTCLAS sy-vline
WA_CDPOS_STR-OBJECTID sy-vline
WA_CDPOS_STR-CHANGENR sy-vline
WA_CDPOS_STR-TABNAME sy-vline
WA_CDPOS_STR-TABKEY sy-vline
WA_CDPOS_STR-FNAME sy-vline
WA_CDPOS_STR-CHNGIND sy-vline
WA_CDPOS_STR-TEXT_CASE sy-vline
WA_CDPOS_STR-UNIT_OLD sy-vline
WA_CDPOS_STR-UNIT_NEW sy-vline
WA_CDPOS_STR-CUKY_OLD sy-vline
WA_CDPOS_STR-CUKY_NEW sy-vline
WA_CDPOS_STR-VALUE_NEW sy-vline
WA_CDPOS_STR-VALUE_OLD sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.