ABAP Select data from SAP table ITAGCYCF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITAGCYCF
*  INTO TABLE @DATA(IT_ITAGCYCF2).
*--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_ITAGCYCF INDEX 1 INTO DATA(WA_ITAGCYCF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITAGCYCF>-CLIENT = 1.
<ITAGCYCF>-PLVAR = 1.
<ITAGCYCF>-OTYPE = 1.
<ITAGCYCF>-OBJID = 1.
<ITAGCYCF>-CDESK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITAGCYCF-CRDATE, sy-vline,
  WA_ITAGCYCF-SEQNO, sy-vline,
  WA_ITAGCYCF-PAYMT, sy-vline,
  WA_ITAGCYCF-COMPCODE, sy-vline,
  WA_ITAGCYCF-CURRENCY, sy-vline,
  WA_ITAGCYCF-AMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITAGCYCF 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_ITAGCYCF 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_ITAGCYCF INTO WA_ITAGCYCF.


*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 CHCKN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYCF-CHCKN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYCF-CHCKN.
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_ITAGCYCF_STR, 
CLIENT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
CDESK TYPE STRING,
CRDATE TYPE STRING,
SEQNO TYPE STRING,
PAYMT TYPE STRING,
COMPCODE TYPE STRING,
CURRENCY TYPE STRING,
AMOUNT TYPE STRING,
CHCKN TYPE STRING,
WDSTATUS TYPE STRING,
WDAMOUNT TYPE STRING,
WDCURRENCY TYPE STRING,
CFDATE TYPE STRING,
CFSEQNO TYPE STRING,
CRTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITAGCYCF_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_ITAGCYCF_STR-CLIENT sy-vline 
WA_ITAGCYCF_STR-PLVAR sy-vline 
WA_ITAGCYCF_STR-OTYPE sy-vline 
WA_ITAGCYCF_STR-OBJID sy-vline 
WA_ITAGCYCF_STR-CDESK sy-vline 
WA_ITAGCYCF_STR-CRDATE sy-vline 
WA_ITAGCYCF_STR-SEQNO sy-vline 
WA_ITAGCYCF_STR-PAYMT sy-vline 
WA_ITAGCYCF_STR-COMPCODE sy-vline 
WA_ITAGCYCF_STR-CURRENCY sy-vline 
WA_ITAGCYCF_STR-AMOUNT sy-vline 
WA_ITAGCYCF_STR-CHCKN sy-vline 
WA_ITAGCYCF_STR-WDSTATUS sy-vline 
WA_ITAGCYCF_STR-WDAMOUNT sy-vline 
WA_ITAGCYCF_STR-WDCURRENCY sy-vline 
WA_ITAGCYCF_STR-CFDATE sy-vline 
WA_ITAGCYCF_STR-CFSEQNO sy-vline 
WA_ITAGCYCF_STR-CRTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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