ABAP Select data from SAP table CMX_XS_W_PARAM_LIVE_DB_BUFFER into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMX_XS_W_PARAM_LIVE_DB_BUFFER
*  INTO TABLE @DATA(IT_CMX_XS_W_PARAM_LIVE_DB_BUFFER2).
*--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_CMX_XS_W_PARAM_LIVE_DB_BUFFER INDEX 1 INTO DATA(WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMX_XS_W_PARAM_LIVE_DB_BUFFER>-OID = 1.
<CMX_XS_W_PARAM_LIVE_DB_BUFFER>-NAME = 1.
<CMX_XS_W_PARAM_LIVE_DB_BUFFER>-TEST = 1.
<CMX_XS_W_PARAM_LIVE_DB_BUFFER>-DOMOBJ = 1.
<CMX_XS_W_PARAM_LIVE_DB_BUFFER>-INTVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-GUID, sy-vline,
  WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-DBSTATE, sy-vline,
  WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-DBLINK, sy-vline,
  WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-DBACTION, sy-vline,
  WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-NID, sy-vline,
  WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER-NID_REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER 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_CMX_XS_W_PARAM_LIVE_DB_BUFFER 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_CMX_XS_W_PARAM_LIVE_DB_BUFFER INTO WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER.


*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_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR, 
OID TYPE STRING,
NAME TYPE STRING,
TEST TYPE STRING,
DOMOBJ TYPE STRING,
INTVAL TYPE STRING,
GUID TYPE STRING,
DBSTATE TYPE STRING,
DBLINK TYPE STRING,
DBACTION TYPE STRING,
NID TYPE STRING,
NID_REF TYPE STRING,
NAME_REF TYPE STRING,
PTYPE TYPE STRING,
APP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_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_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-OID sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-NAME sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-TEST sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-DOMOBJ sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-INTVAL sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-GUID sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-DBSTATE sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-DBLINK sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-DBACTION sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-NID sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-NID_REF sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-NAME_REF sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-PTYPE sy-vline 
WA_CMX_XS_W_PARAM_LIVE_DB_BUFFER_STR-APP sy-vline      INTO ld_text SEPARATED BY SPACE.

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