ABAP Select data from SAP table ITAGCYTC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITAGCYTC
*  INTO TABLE @DATA(IT_ITAGCYTC2).
*--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_ITAGCYTC INDEX 1 INTO DATA(WA_ITAGCYTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITAGCYTC>-CLIENT = 1.
<ITAGCYTC>-TCID = 1.
<ITAGCYTC>-SEQNO = 1.
<ITAGCYTC>-XBLNR = 1.
<ITAGCYTC>-OPBEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITAGCYTC-OPUPK, sy-vline,
  WA_ITAGCYTC-GPART, sy-vline,
  WA_ITAGCYTC-VKONT, sy-vline,
  WA_ITAGCYTC-VTREF, sy-vline,
  WA_ITAGCYTC-BETRW, sy-vline,
  WA_ITAGCYTC-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITAGCYTC 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_ITAGCYTC 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_ITAGCYTC INTO WA_ITAGCYTC.


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

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL_COMM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-OPBEL_COMM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-OPBEL_COMM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-CONT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-CONT_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTRE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-VTRE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-VTRE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGPART2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYTC-VGPART2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYTC-VGPART2.
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_ITAGCYTC_STR, 
CLIENT TYPE STRING,
TCID TYPE STRING,
SEQNO TYPE STRING,
XBLNR TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
FAEDN TYPE STRING,
ECONTR TYPE STRING,
LOBUS TYPE STRING,
POLTY TYPE STRING,
REASON TYPE STRING,
RECEIPT TYPE STRING,
INFO TYPE STRING,
TCPOP TYPE STRING,
AUGST TYPE STRING,
XIACC TYPE STRING,
BETRW_COMM TYPE STRING,
TCPOP_COMM TYPE STRING,
PLVAR_COMM TYPE STRING,
OTYPE_COMM TYPE STRING,
OBJID_COMM TYPE STRING,
OPBEL_COMM TYPE STRING,
OPUPK_COMM TYPE STRING,
CRDATE TYPE STRING,
CRNAME TYPE STRING,
CONT_ID TYPE STRING,
CONT_ITEM_ID TYPE STRING,
BETRW_COINS TYPE STRING,
VTRE2 TYPE STRING,
VGPART2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITAGCYTC_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_ITAGCYTC_STR-CLIENT sy-vline 
WA_ITAGCYTC_STR-TCID sy-vline 
WA_ITAGCYTC_STR-SEQNO sy-vline 
WA_ITAGCYTC_STR-XBLNR sy-vline 
WA_ITAGCYTC_STR-OPBEL sy-vline 
WA_ITAGCYTC_STR-OPUPK sy-vline 
WA_ITAGCYTC_STR-GPART sy-vline 
WA_ITAGCYTC_STR-VKONT sy-vline 
WA_ITAGCYTC_STR-VTREF sy-vline 
WA_ITAGCYTC_STR-BETRW sy-vline 
WA_ITAGCYTC_STR-WAERS sy-vline 
WA_ITAGCYTC_STR-BUKRS sy-vline 
WA_ITAGCYTC_STR-BUDAT sy-vline 
WA_ITAGCYTC_STR-BLDAT sy-vline 
WA_ITAGCYTC_STR-FAEDN sy-vline 
WA_ITAGCYTC_STR-ECONTR sy-vline 
WA_ITAGCYTC_STR-LOBUS sy-vline 
WA_ITAGCYTC_STR-POLTY sy-vline 
WA_ITAGCYTC_STR-REASON sy-vline 
WA_ITAGCYTC_STR-RECEIPT sy-vline 
WA_ITAGCYTC_STR-INFO sy-vline 
WA_ITAGCYTC_STR-TCPOP sy-vline 
WA_ITAGCYTC_STR-AUGST sy-vline 
WA_ITAGCYTC_STR-XIACC sy-vline 
WA_ITAGCYTC_STR-BETRW_COMM sy-vline 
WA_ITAGCYTC_STR-TCPOP_COMM sy-vline 
WA_ITAGCYTC_STR-PLVAR_COMM sy-vline 
WA_ITAGCYTC_STR-OTYPE_COMM sy-vline 
WA_ITAGCYTC_STR-OBJID_COMM sy-vline 
WA_ITAGCYTC_STR-OPBEL_COMM sy-vline 
WA_ITAGCYTC_STR-OPUPK_COMM sy-vline 
WA_ITAGCYTC_STR-CRDATE sy-vline 
WA_ITAGCYTC_STR-CRNAME sy-vline 
WA_ITAGCYTC_STR-CONT_ID sy-vline 
WA_ITAGCYTC_STR-CONT_ITEM_ID sy-vline 
WA_ITAGCYTC_STR-BETRW_COINS sy-vline 
WA_ITAGCYTC_STR-VTRE2 sy-vline 
WA_ITAGCYTC_STR-VGPART2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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