ABAP Select data from SAP table T5ITCO2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5ITCO2 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 T5ITCO2. 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 T5ITCO2 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_T5ITCO2 TYPE STANDARD TABLE OF T5ITCO2,
      WA_T5ITCO2 TYPE T5ITCO2,
      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: <T5ITCO2> TYPE T5ITCO2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5ITCO2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5ITCO2
  INTO TABLE IT_T5ITCO2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5ITCO2
*  INTO TABLE @DATA(IT_T5ITCO22).
*--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_T5ITCO2 INDEX 1 INTO DATA(WA_T5ITCO22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5ITCO2 ASSIGNING <T5ITCO2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5ITCO2>-MANDT = 1.
<T5ITCO2>-VARKY = 1.
<T5ITCO2>-COMTY = 1.
<T5ITCO2>-MASSN = 1.
<T5ITCO2>-MASSG = 1.

ENDLOOP.

LOOP AT IT_T5ITCO2 INTO WA_T5ITCO2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5ITCO2-TRSTEP, sy-vline,
  WA_T5ITCO2-LGA2, sy-vline,
  WA_T5ITCO2-TAB2, sy-vline,
  WA_T5ITCO2-SEQNR, sy-vline,
  WA_T5ITCO2-ENDDA, sy-vline,
  WA_T5ITCO2-BEGDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5ITCO2 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_T5ITCO2 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_T5ITCO2 INTO WA_T5ITCO2.


*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_T5ITCO2_STR, 
MANDT TYPE STRING,
VARKY TYPE STRING,
COMTY TYPE STRING,
MASSN TYPE STRING,
MASSG TYPE STRING,
TRSTEP TYPE STRING,
LGA2 TYPE STRING,
TAB2 TYPE STRING,
SEQNR TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
LGA1 TYPE STRING,
TAB1 TYPE STRING,
OPERATOR TYPE STRING,
CLAMT TYPE STRING,
CLNUM TYPE STRING,
CLRTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5ITCO2_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_T5ITCO2_STR-MANDT sy-vline 
WA_T5ITCO2_STR-VARKY sy-vline 
WA_T5ITCO2_STR-COMTY sy-vline 
WA_T5ITCO2_STR-MASSN sy-vline 
WA_T5ITCO2_STR-MASSG sy-vline 
WA_T5ITCO2_STR-TRSTEP sy-vline 
WA_T5ITCO2_STR-LGA2 sy-vline 
WA_T5ITCO2_STR-TAB2 sy-vline 
WA_T5ITCO2_STR-SEQNR sy-vline 
WA_T5ITCO2_STR-ENDDA sy-vline 
WA_T5ITCO2_STR-BEGDA sy-vline 
WA_T5ITCO2_STR-LGA1 sy-vline 
WA_T5ITCO2_STR-TAB1 sy-vline 
WA_T5ITCO2_STR-OPERATOR sy-vline 
WA_T5ITCO2_STR-CLAMT sy-vline 
WA_T5ITCO2_STR-CLNUM sy-vline 
WA_T5ITCO2_STR-CLRTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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