ABAP Select data from SAP table TICNV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TICNV
*  INTO TABLE @DATA(IT_TICNV2).
*--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_TICNV INDEX 1 INTO DATA(WA_TICNV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TICNV>-TABNAME = 1.
<TICNV>-CNVID = 1.
<TICNV>-CNVCONTEXT = 1.
<TICNV>-SCENARIO = 1.
<TICNV>-SCHEMA1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TICNV-SCHEMA2, sy-vline,
  WA_TICNV-EXECMODE, sy-vline,
  WA_TICNV-SEVERITY, sy-vline,
  WA_TICNV-SCANNR, sy-vline,
  WA_TICNV-PROCCLASS, sy-vline,
  WA_TICNV-M_RUN_TIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TICNV 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_TICNV 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_TICNV INTO WA_TICNV.


*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_TICNV_STR, 
TABNAME TYPE STRING,
CNVID TYPE STRING,
CNVCONTEXT TYPE STRING,
SCENARIO TYPE STRING,
SCHEMA1 TYPE STRING,
SCHEMA2 TYPE STRING,
EXECMODE TYPE STRING,
SEVERITY TYPE STRING,
SCANNR TYPE STRING,
PROCCLASS TYPE STRING,
M_RUN_TIME TYPE STRING,
M_LOCK_CNT TYPE STRING,
M_PROC_NUM TYPE STRING,
ARRAY_SIZE TYPE STRING,
SCHEMAREP TYPE STRING,
FIRSTSCHEM TYPE STRING,
SCHEMAREP2 TYPE STRING,
SECSCHEM TYPE STRING,
SCHEMAREP3 TYPE STRING,
THIRDSCHEM TYPE STRING,
CLIENT_ADD TYPE STRING,
PDATE TYPE STRING,
PTIME TYPE STRING,
PTIME_OFF TYPE STRING,
CNVSTEP TYPE STRING,
CNVSTATE TYPE STRING,
POSTSTATE TYPE STRING,
TARSTATE TYPE STRING,
CNVFIELD TYPE STRING,
CPFIELD TYPE STRING,
BASETAB TYPE STRING,
LOGTAB TYPE STRING,
LOGTAB2 TYPE STRING,
TABNAMES TYPE STRING,
TABALIAS TYPE STRING,
TARGETTAB TYPE STRING,
TMPTABS TYPE STRING,
KEYVIEW TYPE STRING,
VIEWINDEX TYPE STRING,
PROCNAME TYPE STRING,
TRG_UPD1 TYPE STRING,
TRG_DEL1 TYPE STRING,
TRG_INS1 TYPE STRING,
TRG_UPD2 TYPE STRING,
TRG_UPD3 TYPE STRING,
TRG_INS2 TYPE STRING,
STATEREPID TYPE STRING,
TAB_WIDTH TYPE STRING,
CDATE TYPE STRING,
CTIME TYPE STRING,
CUSER TYPE STRING,
MIGDEST TYPE STRING,
MIGREP TYPE STRING,
MIGSCHEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TICNV_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_TICNV_STR-TABNAME sy-vline 
WA_TICNV_STR-CNVID sy-vline 
WA_TICNV_STR-CNVCONTEXT sy-vline 
WA_TICNV_STR-SCENARIO sy-vline 
WA_TICNV_STR-SCHEMA1 sy-vline 
WA_TICNV_STR-SCHEMA2 sy-vline 
WA_TICNV_STR-EXECMODE sy-vline 
WA_TICNV_STR-SEVERITY sy-vline 
WA_TICNV_STR-SCANNR sy-vline 
WA_TICNV_STR-PROCCLASS sy-vline 
WA_TICNV_STR-M_RUN_TIME sy-vline 
WA_TICNV_STR-M_LOCK_CNT sy-vline 
WA_TICNV_STR-M_PROC_NUM sy-vline 
WA_TICNV_STR-ARRAY_SIZE sy-vline 
WA_TICNV_STR-SCHEMAREP sy-vline 
WA_TICNV_STR-FIRSTSCHEM sy-vline 
WA_TICNV_STR-SCHEMAREP2 sy-vline 
WA_TICNV_STR-SECSCHEM sy-vline 
WA_TICNV_STR-SCHEMAREP3 sy-vline 
WA_TICNV_STR-THIRDSCHEM sy-vline 
WA_TICNV_STR-CLIENT_ADD sy-vline 
WA_TICNV_STR-PDATE sy-vline 
WA_TICNV_STR-PTIME sy-vline 
WA_TICNV_STR-PTIME_OFF sy-vline 
WA_TICNV_STR-CNVSTEP sy-vline 
WA_TICNV_STR-CNVSTATE sy-vline 
WA_TICNV_STR-POSTSTATE sy-vline 
WA_TICNV_STR-TARSTATE sy-vline 
WA_TICNV_STR-CNVFIELD sy-vline 
WA_TICNV_STR-CPFIELD sy-vline 
WA_TICNV_STR-BASETAB sy-vline 
WA_TICNV_STR-LOGTAB sy-vline 
WA_TICNV_STR-LOGTAB2 sy-vline 
WA_TICNV_STR-TABNAMES sy-vline 
WA_TICNV_STR-TABALIAS sy-vline 
WA_TICNV_STR-TARGETTAB sy-vline 
WA_TICNV_STR-TMPTABS sy-vline 
WA_TICNV_STR-KEYVIEW sy-vline 
WA_TICNV_STR-VIEWINDEX sy-vline 
WA_TICNV_STR-PROCNAME sy-vline 
WA_TICNV_STR-TRG_UPD1 sy-vline 
WA_TICNV_STR-TRG_DEL1 sy-vline 
WA_TICNV_STR-TRG_INS1 sy-vline 
WA_TICNV_STR-TRG_UPD2 sy-vline 
WA_TICNV_STR-TRG_UPD3 sy-vline 
WA_TICNV_STR-TRG_INS2 sy-vline 
WA_TICNV_STR-STATEREPID sy-vline 
WA_TICNV_STR-TAB_WIDTH sy-vline 
WA_TICNV_STR-CDATE sy-vline 
WA_TICNV_STR-CTIME sy-vline 
WA_TICNV_STR-CUSER sy-vline 
WA_TICNV_STR-MIGDEST sy-vline 
WA_TICNV_STR-MIGREP sy-vline 
WA_TICNV_STR-MIGSCHEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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