ABAP Select data from SAP table TRCON_IT_COND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRCON_IT_COND
*  INTO TABLE @DATA(IT_TRCON_IT_COND2).
*--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_TRCON_IT_COND INDEX 1 INTO DATA(WA_TRCON_IT_COND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRCON_IT_COND>-TC_NUMB = 1.
<TRCON_IT_COND>-TPOSN = 1.
<TRCON_IT_COND>-TPOSN_SUB = 1.
<TRCON_IT_COND>-KPOSN = 1.
<TRCON_IT_COND>-STUNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRCON_IT_COND-ZAEHK, sy-vline,
  WA_TRCON_IT_COND-KAPPL, sy-vline,
  WA_TRCON_IT_COND-KSCHL, sy-vline,
  WA_TRCON_IT_COND-KRECH, sy-vline,
  WA_TRCON_IT_COND-KAWRT, sy-vline,
  WA_TRCON_IT_COND-AWEIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRCON_IT_COND 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_TRCON_IT_COND 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_TRCON_IT_COND INTO WA_TRCON_IT_COND.


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

*Conversion exit EXCRT, internal->external for field KKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TRCON_IT_COND-KKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCON_IT_COND-KKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TRCON_IT_COND-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCON_IT_COND-KMEIN.
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_TRCON_IT_COND_STR, 
TC_NUMB TYPE STRING,
TPOSN TYPE STRING,
TPOSN_SUB TYPE STRING,
KPOSN TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
KRECH TYPE STRING,
KAWRT TYPE STRING,
AWEIN TYPE STRING,
AWEI1 TYPE STRING,
KBETR TYPE STRING,
KOEIN TYPE STRING,
KOEI1 TYPE STRING,
KKURS TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
KNTYP TYPE STRING,
KSTAT TYPE STRING,
KHERK TYPE STRING,
KWERT TYPE STRING,
KSTEU TYPE STRING,
KINAK TYPE STRING,
KOAID TYPE STRING,
KNUMT TYPE STRING,
DRUKZ TYPE STRING,
VTEXT TYPE STRING,
MWSKZ TYPE STRING,
STUFE TYPE STRING,
WEGXX TYPE STRING,
KFAKTOR TYPE STRING,
NRMNG TYPE STRING,
MDFLG TYPE STRING,
KWERT_EURO TYPE STRING,
KAQTY TYPE STRING,
KWERT_HWAER TYPE STRING,
KAWRT_HWAER TYPE STRING,
TAX_COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRCON_IT_COND_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_TRCON_IT_COND_STR-TC_NUMB sy-vline 
WA_TRCON_IT_COND_STR-TPOSN sy-vline 
WA_TRCON_IT_COND_STR-TPOSN_SUB sy-vline 
WA_TRCON_IT_COND_STR-KPOSN sy-vline 
WA_TRCON_IT_COND_STR-STUNR sy-vline 
WA_TRCON_IT_COND_STR-ZAEHK sy-vline 
WA_TRCON_IT_COND_STR-KAPPL sy-vline 
WA_TRCON_IT_COND_STR-KSCHL sy-vline 
WA_TRCON_IT_COND_STR-KRECH sy-vline 
WA_TRCON_IT_COND_STR-KAWRT sy-vline 
WA_TRCON_IT_COND_STR-AWEIN sy-vline 
WA_TRCON_IT_COND_STR-AWEI1 sy-vline 
WA_TRCON_IT_COND_STR-KBETR sy-vline 
WA_TRCON_IT_COND_STR-KOEIN sy-vline 
WA_TRCON_IT_COND_STR-KOEI1 sy-vline 
WA_TRCON_IT_COND_STR-KKURS sy-vline 
WA_TRCON_IT_COND_STR-KPEIN sy-vline 
WA_TRCON_IT_COND_STR-KMEIN sy-vline 
WA_TRCON_IT_COND_STR-KUMZA sy-vline 
WA_TRCON_IT_COND_STR-KUMNE sy-vline 
WA_TRCON_IT_COND_STR-KNTYP sy-vline 
WA_TRCON_IT_COND_STR-KSTAT sy-vline 
WA_TRCON_IT_COND_STR-KHERK sy-vline 
WA_TRCON_IT_COND_STR-KWERT sy-vline 
WA_TRCON_IT_COND_STR-KSTEU sy-vline 
WA_TRCON_IT_COND_STR-KINAK sy-vline 
WA_TRCON_IT_COND_STR-KOAID sy-vline 
WA_TRCON_IT_COND_STR-KNUMT sy-vline 
WA_TRCON_IT_COND_STR-DRUKZ sy-vline 
WA_TRCON_IT_COND_STR-VTEXT sy-vline 
WA_TRCON_IT_COND_STR-MWSKZ sy-vline 
WA_TRCON_IT_COND_STR-STUFE sy-vline 
WA_TRCON_IT_COND_STR-WEGXX sy-vline 
WA_TRCON_IT_COND_STR-KFAKTOR sy-vline 
WA_TRCON_IT_COND_STR-NRMNG sy-vline 
WA_TRCON_IT_COND_STR-MDFLG sy-vline 
WA_TRCON_IT_COND_STR-KWERT_EURO sy-vline 
WA_TRCON_IT_COND_STR-KAQTY sy-vline 
WA_TRCON_IT_COND_STR-KWERT_HWAER sy-vline 
WA_TRCON_IT_COND_STR-KAWRT_HWAER sy-vline 
WA_TRCON_IT_COND_STR-TAX_COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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