ABAP Select data from SAP table CNV_ADT_DP_CMOMU_S_SYSINFO 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 CNV_ADT_DP_CMOMU_S_SYSINFO 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 CNV_ADT_DP_CMOMU_S_SYSINFO. 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 CNV_ADT_DP_CMOMU_S_SYSINFO 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_CNV_ADT_DP_CMOMU_S_SYSINFO TYPE STANDARD TABLE OF CNV_ADT_DP_CMOMU_S_SYSINFO,
      WA_CNV_ADT_DP_CMOMU_S_SYSINFO TYPE CNV_ADT_DP_CMOMU_S_SYSINFO,
      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: <CNV_ADT_DP_CMOMU_S_SYSINFO> TYPE CNV_ADT_DP_CMOMU_S_SYSINFO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_ADT_DP_CMOMU_S_SYSINFO
*  INTO TABLE @DATA(IT_CNV_ADT_DP_CMOMU_S_SYSINFO2).
*--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_CNV_ADT_DP_CMOMU_S_SYSINFO INDEX 1 INTO DATA(WA_CNV_ADT_DP_CMOMU_S_SYSINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_ADT_DP_CMOMU_S_SYSINFO>-SYSTYPE = 1.
<CNV_ADT_DP_CMOMU_S_SYSINFO>-VIEWKEY = 1.
<CNV_ADT_DP_CMOMU_S_SYSINFO>-SYSID = 1.
<CNV_ADT_DP_CMOMU_S_SYSINFO>-SYSNR = 1.
<CNV_ADT_DP_CMOMU_S_SYSINFO>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_ADT_DP_CMOMU_S_SYSINFO-MTEXT, sy-vline,
  WA_CNV_ADT_DP_CMOMU_S_SYSINFO-SAPRL, sy-vline,
  WA_CNV_ADT_DP_CMOMU_S_SYSINFO-OPSYS, sy-vline,
  WA_CNV_ADT_DP_CMOMU_S_SYSINFO-DBSYS, sy-vline,
  WA_CNV_ADT_DP_CMOMU_S_SYSINFO-UNICODE, sy-vline,
  WA_CNV_ADT_DP_CMOMU_S_SYSINFO-HOST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_ADT_DP_CMOMU_S_SYSINFO 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_CNV_ADT_DP_CMOMU_S_SYSINFO 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_CNV_ADT_DP_CMOMU_S_SYSINFO INTO WA_CNV_ADT_DP_CMOMU_S_SYSINFO.


*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_CNV_ADT_DP_CMOMU_S_SYSINFO_STR, 
SYSTYPE TYPE STRING,
VIEWKEY TYPE STRING,
SYSID TYPE STRING,
SYSNR TYPE STRING,
MANDT TYPE STRING,
MTEXT TYPE STRING,
SAPRL TYPE STRING,
OPSYS TYPE STRING,
DBSYS TYPE STRING,
UNICODE TYPE STRING,
HOST TYPE STRING,
INSTNUM TYPE STRING,
DBSIZE TYPE STRING,
DBFREE TYPE STRING,
CPU_COUNT TYPE STRING,
MEMSIZE TYPE STRING,
SYSTEM_TYPE TYPE STRING,
KEY_PAT03 TYPE STRING,
COMPONENT TYPE STRING,
COMP_REL TYPE STRING,
ADDON_ID TYPE STRING,
LANG TYPE STRING,
LANG_TXT TYPE STRING,
CODEPAGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_ADT_DP_CMOMU_S_SYSINFO_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_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-SYSTYPE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-VIEWKEY sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-SYSID sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-SYSNR sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-MANDT sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-MTEXT sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-SAPRL sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-OPSYS sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-DBSYS sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-UNICODE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-HOST sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-INSTNUM sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-DBSIZE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-DBFREE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-CPU_COUNT sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-MEMSIZE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-SYSTEM_TYPE sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-KEY_PAT03 sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-COMPONENT sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-COMP_REL sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-ADDON_ID sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-LANG sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-LANG_TXT sy-vline 
WA_CNV_ADT_DP_CMOMU_S_SYSINFO_STR-CODEPAGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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