ABAP Select data from SAP table CKML_MANCHANG_CCS_GRID into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKML_MANCHANG_CCS_GRID 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 CKML_MANCHANG_CCS_GRID. 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 CKML_MANCHANG_CCS_GRID 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_CKML_MANCHANG_CCS_GRID TYPE STANDARD TABLE OF CKML_MANCHANG_CCS_GRID,
      WA_CKML_MANCHANG_CCS_GRID TYPE CKML_MANCHANG_CCS_GRID,
      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: <CKML_MANCHANG_CCS_GRID> TYPE CKML_MANCHANG_CCS_GRID.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_MANCHANG_CCS_GRID
*  INTO TABLE @DATA(IT_CKML_MANCHANG_CCS_GRID2).
*--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_CKML_MANCHANG_CCS_GRID INDEX 1 INTO DATA(WA_CKML_MANCHANG_CCS_GRID2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKML_MANCHANG_CCS_GRID ASSIGNING <CKML_MANCHANG_CCS_GRID>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKML_MANCHANG_CCS_GRID>-ELEMENT = 1.
<CKML_MANCHANG_CCS_GRID>-TXELE = 1.
<CKML_MANCHANG_CCS_GRID>-GESAMT1 = 1.
<CKML_MANCHANG_CCS_GRID>-FIX1 = 1.
<CKML_MANCHANG_CCS_GRID>-VARIABEL1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKML_MANCHANG_CCS_GRID-WAERS1, sy-vline,
  WA_CKML_MANCHANG_CCS_GRID-GESAMT2, sy-vline,
  WA_CKML_MANCHANG_CCS_GRID-FIX2, sy-vline,
  WA_CKML_MANCHANG_CCS_GRID-VARIABEL2, sy-vline,
  WA_CKML_MANCHANG_CCS_GRID-WAERS2, sy-vline,
  WA_CKML_MANCHANG_CCS_GRID-GESAMT3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKML_MANCHANG_CCS_GRID 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_CKML_MANCHANG_CCS_GRID 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_CKML_MANCHANG_CCS_GRID INTO WA_CKML_MANCHANG_CCS_GRID.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CKML_MANCHANG_CCS_GRID_STR, 
ELEMENT TYPE STRING,
TXELE TYPE STRING,
GESAMT1 TYPE STRING,
FIX1 TYPE STRING,
VARIABEL1 TYPE STRING,
WAERS1 TYPE STRING,
GESAMT2 TYPE STRING,
FIX2 TYPE STRING,
VARIABEL2 TYPE STRING,
WAERS2 TYPE STRING,
GESAMT3 TYPE STRING,
FIX3 TYPE STRING,
VARIABEL3 TYPE STRING,
WAERS3 TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKML_MANCHANG_CCS_GRID_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_CKML_MANCHANG_CCS_GRID_STR-ELEMENT sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-TXELE sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-GESAMT1 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-FIX1 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-VARIABEL1 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-WAERS1 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-GESAMT2 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-FIX2 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-VARIABEL2 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-WAERS2 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-GESAMT3 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-FIX3 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-VARIABEL3 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-WAERS3 sy-vline 
WA_CKML_MANCHANG_CCS_GRID_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.