ABAP Select data from SAP table CNOMAPPLLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNOMAPPLLOG
*  INTO TABLE @DATA(IT_CNOMAPPLLOG2).
*--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_CNOMAPPLLOG INDEX 1 INTO DATA(WA_CNOMAPPLLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNOMAPPLLOG>-MANDT = 1.
<CNOMAPPLLOG>-NOMINATIONDOC = 1.
<CNOMAPPLLOG>-NOMINATIONAPPLLOGCOUNT = 1.
<CNOMAPPLLOG>-NOMINATIONDOCITEM = 1.
<CNOMAPPLLOG>-NOMINATIONAPPLLOGMSGLONGTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNOMAPPLLOG-NOMINATIONSYSTEMMSGTYPENAME, sy-vline,
  WA_CNOMAPPLLOG-NOMINATIONMESSAGETYPETEXT, sy-vline,
  WA_CNOMAPPLLOG-NOMINATIONTYPE, sy-vline,
  WA_CNOMAPPLLOG-NOMINATIONHEADERSTATUS, sy-vline,
  WA_CNOMAPPLLOG-NOMINATIONSHIPPER, sy-vline,
  WA_CNOMAPPLLOG-NOMINATIONCARRIER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNOMAPPLLOG 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_CNOMAPPLLOG 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_CNOMAPPLLOG INTO WA_CNOMAPPLLOG.


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

*Conversion exit ALPHA, internal->external for field NOMINATIONSHIPPER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNOMAPPLLOG-NOMINATIONSHIPPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNOMAPPLLOG-NOMINATIONSHIPPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NOMINATIONCARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNOMAPPLLOG-NOMINATIONCARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNOMAPPLLOG-NOMINATIONCARRIER.
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_CNOMAPPLLOG_STR, 
MANDT TYPE STRING,
NOMINATIONDOC TYPE STRING,
NOMINATIONAPPLLOGCOUNT TYPE STRING,
NOMINATIONDOCITEM TYPE STRING,
NOMINATIONAPPLLOGMSGLONGTEXT TYPE STRING,
NOMINATIONSYSTEMMSGTYPENAME TYPE STRING,
NOMINATIONMESSAGETYPETEXT TYPE STRING,
NOMINATIONTYPE TYPE STRING,
NOMINATIONHEADERSTATUS TYPE STRING,
NOMINATIONSHIPPER TYPE STRING,
NOMINATIONCARRIER TYPE STRING,
NOMINATIONMODEOFTRANSPORT TYPE STRING,
INTRANSITPLANT TYPE STRING,
TRANSPORTSYSTEM TYPE STRING,
LOCATIONID TYPE STRING,
NOMINATIONDOCISBLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNOMAPPLLOG_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_CNOMAPPLLOG_STR-MANDT sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONDOC sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONAPPLLOGCOUNT sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONDOCITEM sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONAPPLLOGMSGLONGTEXT sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONSYSTEMMSGTYPENAME sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONMESSAGETYPETEXT sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONTYPE sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONHEADERSTATUS sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONSHIPPER sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONCARRIER sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONMODEOFTRANSPORT sy-vline 
WA_CNOMAPPLLOG_STR-INTRANSITPLANT sy-vline 
WA_CNOMAPPLLOG_STR-TRANSPORTSYSTEM sy-vline 
WA_CNOMAPPLLOG_STR-LOCATIONID sy-vline 
WA_CNOMAPPLLOG_STR-NOMINATIONDOCISBLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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