ABAP Select data from SAP table CITSRFAREGHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CITSRFAREGHDR
*  INTO TABLE @DATA(IT_CITSRFAREGHDR2).
*--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_CITSRFAREGHDR INDEX 1 INTO DATA(WA_CITSRFAREGHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CITSRFAREGHDR>-MANDT = 1.
<CITSRFAREGHDR>-CURRENTSYSTEMTIME = 1.
<CITSRFAREGHDR>-CURRENTDATE = 1.
<CITSRFAREGHDR>-USERNAME = 1.
<CITSRFAREGHDR>-FIXEDASSETFORMCOLUMN01TITLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN02TITLE, sy-vline,
  WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN03TITLE, sy-vline,
  WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN04TITLE, sy-vline,
  WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN05TITLE, sy-vline,
  WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN06TITLE, sy-vline,
  WA_CITSRFAREGHDR-FIXEDASSETFORMCOLUMN07TITLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CITSRFAREGHDR 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_CITSRFAREGHDR 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_CITSRFAREGHDR INTO WA_CITSRFAREGHDR.


*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_CITSRFAREGHDR_STR, 
MANDT TYPE STRING,
CURRENTSYSTEMTIME TYPE STRING,
CURRENTDATE TYPE STRING,
USERNAME TYPE STRING,
FIXEDASSETFORMCOLUMN01TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN02TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN03TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN04TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN05TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN06TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN07TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN08TITLE TYPE STRING,
FIXEDASSETFORMCOLUMN09TITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CITSRFAREGHDR_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_CITSRFAREGHDR_STR-MANDT sy-vline 
WA_CITSRFAREGHDR_STR-CURRENTSYSTEMTIME sy-vline 
WA_CITSRFAREGHDR_STR-CURRENTDATE sy-vline 
WA_CITSRFAREGHDR_STR-USERNAME sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN01TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN02TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN03TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN04TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN05TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN06TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN07TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN08TITLE sy-vline 
WA_CITSRFAREGHDR_STR-FIXEDASSETFORMCOLUMN09TITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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