ABAP Select data from SAP table CKML_RUN_S_ALV_PLANTS_NA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKML_RUN_S_ALV_PLANTS_NA 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_RUN_S_ALV_PLANTS_NA. 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_RUN_S_ALV_PLANTS_NA 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_RUN_S_ALV_PLANTS_NA TYPE STANDARD TABLE OF CKML_RUN_S_ALV_PLANTS_NA,
      WA_CKML_RUN_S_ALV_PLANTS_NA TYPE CKML_RUN_S_ALV_PLANTS_NA,
      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_RUN_S_ALV_PLANTS_NA> TYPE CKML_RUN_S_ALV_PLANTS_NA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_RUN_S_ALV_PLANTS_NA
*  INTO TABLE @DATA(IT_CKML_RUN_S_ALV_PLANTS_NA2).
*--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_RUN_S_ALV_PLANTS_NA INDEX 1 INTO DATA(WA_CKML_RUN_S_ALV_PLANTS_NA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKML_RUN_S_ALV_PLANTS_NA>-RUN_TYPE = 1.
<CKML_RUN_S_ALV_PLANTS_NA>-NO_AUTHORITY = 1.
<CKML_RUN_S_ALV_PLANTS_NA>-WERKS = 1.
<CKML_RUN_S_ALV_PLANTS_NA>-NAME1 = 1.
<CKML_RUN_S_ALV_PLANTS_NA>-MGVUPD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKML_RUN_S_ALV_PLANTS_NA-MGVLAUPD, sy-vline,
  WA_CKML_RUN_S_ALV_PLANTS_NA-BUKRS, sy-vline,
  WA_CKML_RUN_S_ALV_PLANTS_NA-BUTXT, sy-vline,
  WA_CKML_RUN_S_ALV_PLANTS_NA-KOKRS, sy-vline,
  WA_CKML_RUN_S_ALV_PLANTS_NA-POPER, sy-vline,
  WA_CKML_RUN_S_ALV_PLANTS_NA-GJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKML_RUN_S_ALV_PLANTS_NA 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_RUN_S_ALV_PLANTS_NA 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_RUN_S_ALV_PLANTS_NA INTO WA_CKML_RUN_S_ALV_PLANTS_NA.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKML_RUN_S_ALV_PLANTS_NA-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_RUN_S_ALV_PLANTS_NA-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FROM_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKML_RUN_S_ALV_PLANTS_NA-FROM_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_RUN_S_ALV_PLANTS_NA-FROM_GJAHR.
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_CKML_RUN_S_ALV_PLANTS_NA_STR, 
RUN_TYPE TYPE STRING,
NO_AUTHORITY TYPE STRING,
WERKS TYPE STRING,
NAME1 TYPE STRING,
MGVUPD TYPE STRING,
MGVLAUPD TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
KOKRS TYPE STRING,
POPER TYPE STRING,
GJAHR TYPE STRING,
LAST_DAY TYPE STRING,
BWKEY TYPE STRING,
PERIV TYPE STRING,
FROM_POPER TYPE STRING,
FROM_GJAHR TYPE STRING,
FIRST_DAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKML_RUN_S_ALV_PLANTS_NA_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_RUN_S_ALV_PLANTS_NA_STR-RUN_TYPE sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-NO_AUTHORITY sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-WERKS sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-NAME1 sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-MGVUPD sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-MGVLAUPD sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-BUKRS sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-BUTXT sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-KOKRS sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-POPER sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-GJAHR sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-LAST_DAY sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-BWKEY sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-PERIV sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-FROM_POPER sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-FROM_GJAHR sy-vline 
WA_CKML_RUN_S_ALV_PLANTS_NA_STR-FIRST_DAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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