ABAP Select data from SAP table CNTLSTRINF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNTLSTRINF
*  INTO TABLE @DATA(IT_CNTLSTRINF2).
*--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_CNTLSTRINF INDEX 1 INTO DATA(WA_CNTLSTRINF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNTLSTRINF>-FILENAME = 1.
<CNTLSTRINF>-PLATFORM = 1.
<CNTLSTRINF>-PROCID = 1.
<CNTLSTRINF>-NATIVENAME = 1.
<CNTLSTRINF>-DBGREL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNTLSTRINF-VERSION, sy-vline,
  WA_CNTLSTRINF-SPRACHE, sy-vline,
  WA_CNTLSTRINF-REGISTER, sy-vline,
  WA_CNTLSTRINF-LENGTH, sy-vline,
  WA_CNTLSTRINF-DESCRIPT, sy-vline,
  WA_CNTLSTRINF-OWNER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNTLSTRINF 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_CNTLSTRINF 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_CNTLSTRINF INTO WA_CNTLSTRINF.


*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_CNTLSTRINF_STR, 
FILENAME TYPE STRING,
PLATFORM TYPE STRING,
PROCID TYPE STRING,
NATIVENAME TYPE STRING,
DBGREL TYPE STRING,
VERSION TYPE STRING,
SPRACHE TYPE STRING,
REGISTER TYPE STRING,
LENGTH TYPE STRING,
DESCRIPT TYPE STRING,
OWNER TYPE STRING,
DATUM TYPE STRING,
REFCOUNT TYPE STRING,
FILEBASE TYPE STRING,
SOURCEBASE TYPE STRING,
SOURCEEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNTLSTRINF_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_CNTLSTRINF_STR-FILENAME sy-vline 
WA_CNTLSTRINF_STR-PLATFORM sy-vline 
WA_CNTLSTRINF_STR-PROCID sy-vline 
WA_CNTLSTRINF_STR-NATIVENAME sy-vline 
WA_CNTLSTRINF_STR-DBGREL sy-vline 
WA_CNTLSTRINF_STR-VERSION sy-vline 
WA_CNTLSTRINF_STR-SPRACHE sy-vline 
WA_CNTLSTRINF_STR-REGISTER sy-vline 
WA_CNTLSTRINF_STR-LENGTH sy-vline 
WA_CNTLSTRINF_STR-DESCRIPT sy-vline 
WA_CNTLSTRINF_STR-OWNER sy-vline 
WA_CNTLSTRINF_STR-DATUM sy-vline 
WA_CNTLSTRINF_STR-REFCOUNT sy-vline 
WA_CNTLSTRINF_STR-FILEBASE sy-vline 
WA_CNTLSTRINF_STR-SOURCEBASE sy-vline 
WA_CNTLSTRINF_STR-SOURCEEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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