ABAP Select data from SAP table CMNGINC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMNGINC
*  INTO TABLE @DATA(IT_CMNGINC2).
*--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_CMNGINC INDEX 1 INTO DATA(WA_CMNGINC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMNGINC>-MANDT = 1.
<CMNGINC>-INCIDENTUUID = 1.
<CMNGINC>-CREATIONDATETIME = 1.
<CMNGINC>-CREATEDBYUSER = 1.
<CMNGINC>-LASTCHANGEDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMNGINC-LASTCHANGEDBYUSER, sy-vline,
  WA_CMNGINC-PERSONFULLNAME, sy-vline,
  WA_CMNGINC-INCIDENTID, sy-vline,
  WA_CMNGINC-INCIDENTCATEGORY, sy-vline,
  WA_CMNGINC-INCIDENTSTATUS, sy-vline,
  WA_CMNGINC-INCIDENTSTATUSTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMNGINC 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_CMNGINC 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_CMNGINC INTO WA_CMNGINC.


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

*Conversion exit ALPHA, internal->external for field EHSLOCATIONID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMNGINC-EHSLOCATIONID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMNGINC-EHSLOCATIONID.
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_CMNGINC_STR, 
MANDT TYPE STRING,
INCIDENTUUID TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
PERSONFULLNAME TYPE STRING,
INCIDENTID TYPE STRING,
INCIDENTCATEGORY TYPE STRING,
INCIDENTSTATUS TYPE STRING,
INCIDENTSTATUSTEXT TYPE STRING,
EHSLOCATIONUUID TYPE STRING,
EHSLOCATIONID TYPE STRING,
EHSLOCATIONNAMEFREESRCH TYPE STRING,
EHSLOCATIONNAME TYPE STRING,
INCIDENTTITLE TYPE STRING,
INCIDENTDATE TYPE STRING,
INCIDENTUTCDATETIME TYPE STRING,
PLANT TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
EHSLOCATIONURL TYPE STRING,
INCIDENTGROUPFILTERVALUE TYPE STRING,
EHSCOMBINEDBUSINESSPARTNER TYPE STRING,
INCIDENTMIGRATIONSOURCETEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMNGINC_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_CMNGINC_STR-MANDT sy-vline 
WA_CMNGINC_STR-INCIDENTUUID sy-vline 
WA_CMNGINC_STR-CREATIONDATETIME sy-vline 
WA_CMNGINC_STR-CREATEDBYUSER sy-vline 
WA_CMNGINC_STR-LASTCHANGEDATETIME sy-vline 
WA_CMNGINC_STR-LASTCHANGEDBYUSER sy-vline 
WA_CMNGINC_STR-PERSONFULLNAME sy-vline 
WA_CMNGINC_STR-INCIDENTID sy-vline 
WA_CMNGINC_STR-INCIDENTCATEGORY sy-vline 
WA_CMNGINC_STR-INCIDENTSTATUS sy-vline 
WA_CMNGINC_STR-INCIDENTSTATUSTEXT sy-vline 
WA_CMNGINC_STR-EHSLOCATIONUUID sy-vline 
WA_CMNGINC_STR-EHSLOCATIONID sy-vline 
WA_CMNGINC_STR-EHSLOCATIONNAMEFREESRCH sy-vline 
WA_CMNGINC_STR-EHSLOCATIONNAME sy-vline 
WA_CMNGINC_STR-INCIDENTTITLE sy-vline 
WA_CMNGINC_STR-INCIDENTDATE sy-vline 
WA_CMNGINC_STR-INCIDENTUTCDATETIME sy-vline 
WA_CMNGINC_STR-PLANT sy-vline 
WA_CMNGINC_STR-COUNTRY sy-vline 
WA_CMNGINC_STR-REGION sy-vline 
WA_CMNGINC_STR-EHSLOCATIONURL sy-vline 
WA_CMNGINC_STR-INCIDENTGROUPFILTERVALUE sy-vline 
WA_CMNGINC_STR-EHSCOMBINEDBUSINESSPARTNER sy-vline 
WA_CMNGINC_STR-INCIDENTMIGRATIONSOURCETEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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