ABAP Select data from SAP table CLCMCTXHEALTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLCMCTXHEALTH
*  INTO TABLE @DATA(IT_CLCMCTXHEALTH2).
*--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_CLCMCTXHEALTH INDEX 1 INTO DATA(WA_CLCMCTXHEALTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLCMCTXHEALTH>-MANDT = 1.
<CLCMCTXHEALTH>-LGLCNTNTMCONTEXTUUID = 1.
<CLCMCTXHEALTH>-LGLCNTNTMCONTEXT = 1.
<CLCMCTXHEALTH>-LGLCNTNTMCONTEXTVERSION = 1.
<CLCMCTXHEALTH>-LGLCNTNTMCONTEXTSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLCMCTXHEALTH-LGLCNTNTMCURSTATUSNAME, sy-vline,
  WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXTCURSTATUS, sy-vline,
  WA_CLCMCTXHEALTH-LGLCNTNTMENTITY, sy-vline,
  WA_CLCMCTXHEALTH-LGLCNTNTMCREATEDUTCDATETIME, sy-vline,
  WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXTVALIDTODATE, sy-vline,
  WA_CLCMCTXHEALTH-LGLCNTNTMPROFILE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLCMCTXHEALTH 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_CLCMCTXHEALTH 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_CLCMCTXHEALTH INTO WA_CLCMCTXHEALTH.


*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 LGLCNTNTMCONTEXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LGLCNTNTMCONTEXTVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXTVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLCMCTXHEALTH-LGLCNTNTMCONTEXTVERSION.
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_CLCMCTXHEALTH_STR, 
MANDT TYPE STRING,
LGLCNTNTMCONTEXTUUID TYPE STRING,
LGLCNTNTMCONTEXT TYPE STRING,
LGLCNTNTMCONTEXTVERSION TYPE STRING,
LGLCNTNTMCONTEXTSTATUS TYPE STRING,
LGLCNTNTMCURSTATUSNAME TYPE STRING,
LGLCNTNTMCONTEXTCURSTATUS TYPE STRING,
LGLCNTNTMENTITY TYPE STRING,
LGLCNTNTMCREATEDUTCDATETIME TYPE STRING,
LGLCNTNTMCONTEXTVALIDTODATE TYPE STRING,
LGLCNTNTMPROFILE TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARYEAR TYPE STRING,
CURRENTQUARTER TYPE STRING,
YEARQUARTER TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLCMCTXHEALTH_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_CLCMCTXHEALTH_STR-MANDT sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXTUUID sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXT sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXTVERSION sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXTSTATUS sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCURSTATUSNAME sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXTCURSTATUS sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMENTITY sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCREATEDUTCDATETIME sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMCONTEXTVALIDTODATE sy-vline 
WA_CLCMCTXHEALTH_STR-LGLCNTNTMPROFILE sy-vline 
WA_CLCMCTXHEALTH_STR-CALENDARQUARTER sy-vline 
WA_CLCMCTXHEALTH_STR-CALENDARYEAR sy-vline 
WA_CLCMCTXHEALTH_STR-CURRENTQUARTER sy-vline 
WA_CLCMCTXHEALTH_STR-YEARQUARTER sy-vline 
WA_CLCMCTXHEALTH_STR-ISENDOFPURPOSEBLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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