ABAP Select data from SAP table ITAGCYCONTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITAGCYCONTH
*  INTO TABLE @DATA(IT_ITAGCYCONTH2).
*--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_ITAGCYCONTH INDEX 1 INTO DATA(WA_ITAGCYCONTH2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITAGCYCONTH-CDESK, sy-vline,
  WA_ITAGCYCONTH-CDMODE, sy-vline,
  WA_ITAGCYCONTH-CONTSTATUS, sy-vline,
  WA_ITAGCYCONTH-INV_FR, sy-vline,
  WA_ITAGCYCONTH-INV_TO, sy-vline,
  WA_ITAGCYCONTH-FIKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITAGCYCONTH 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_ITAGCYCONTH 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_ITAGCYCONTH INTO WA_ITAGCYCONTH.


*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 CONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYCONTH-CONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYCONTH-CONT.
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_ITAGCYCONTH_STR, 
CLIENT TYPE STRING,
CONT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
CDESK TYPE STRING,
CDMODE TYPE STRING,
CONTSTATUS TYPE STRING,
INV_FR TYPE STRING,
INV_TO TYPE STRING,
FIKEY TYPE STRING,
PAYLINK TYPE STRING,
PLVAR_TP TYPE STRING,
OTYPE_TP TYPE STRING,
OBJID_TP TYPE STRING,
XNETPRINC TYPE STRING,
XPOSREV TYPE STRING,
POSTDATE TYPE STRING,
SRCHTERM TYPE STRING,
GRPKEY TYPE STRING,
MAXPOS TYPE STRING,
AMOUNT_WTAX TYPE STRING,
CONTROL_POS TYPE STRING,
CONTROL_PREM TYPE STRING,
CONTROL_COMM TYPE STRING,
AMOUNT_DIFF TYPE STRING,
DIFFRULE TYPE STRING,
CONTTYPE TYPE STRING,
XPRINTREC TYPE STRING,
CLCOMPCODE TYPE STRING,
COMPCODE TYPE STRING,
TRCURRENCY TYPE STRING,
CURRENCY TYPE STRING,
XNO_PAYMETHOD TYPE STRING,
XNO_REPAMOUNT TYPE STRING,
DET_PAYAMOUNT TYPE STRING,
XHIERCOLL TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CRNAME TYPE STRING,
CHNGDATE TYPE STRING,
CHNGTIME TYPE STRING,
CHNGNAME TYPE STRING,
DIFFCAT TYPE STRING,
BUSCASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITAGCYCONTH_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_ITAGCYCONTH_STR-CLIENT sy-vline 
WA_ITAGCYCONTH_STR-CONT sy-vline 
WA_ITAGCYCONTH_STR-PLVAR sy-vline 
WA_ITAGCYCONTH_STR-OTYPE sy-vline 
WA_ITAGCYCONTH_STR-OBJID sy-vline 
WA_ITAGCYCONTH_STR-CDESK sy-vline 
WA_ITAGCYCONTH_STR-CDMODE sy-vline 
WA_ITAGCYCONTH_STR-CONTSTATUS sy-vline 
WA_ITAGCYCONTH_STR-INV_FR sy-vline 
WA_ITAGCYCONTH_STR-INV_TO sy-vline 
WA_ITAGCYCONTH_STR-FIKEY sy-vline 
WA_ITAGCYCONTH_STR-PAYLINK sy-vline 
WA_ITAGCYCONTH_STR-PLVAR_TP sy-vline 
WA_ITAGCYCONTH_STR-OTYPE_TP sy-vline 
WA_ITAGCYCONTH_STR-OBJID_TP sy-vline 
WA_ITAGCYCONTH_STR-XNETPRINC sy-vline 
WA_ITAGCYCONTH_STR-XPOSREV sy-vline 
WA_ITAGCYCONTH_STR-POSTDATE sy-vline 
WA_ITAGCYCONTH_STR-SRCHTERM sy-vline 
WA_ITAGCYCONTH_STR-GRPKEY sy-vline 
WA_ITAGCYCONTH_STR-MAXPOS sy-vline 
WA_ITAGCYCONTH_STR-AMOUNT_WTAX sy-vline 
WA_ITAGCYCONTH_STR-CONTROL_POS sy-vline 
WA_ITAGCYCONTH_STR-CONTROL_PREM sy-vline 
WA_ITAGCYCONTH_STR-CONTROL_COMM sy-vline 
WA_ITAGCYCONTH_STR-AMOUNT_DIFF sy-vline 
WA_ITAGCYCONTH_STR-DIFFRULE sy-vline 
WA_ITAGCYCONTH_STR-CONTTYPE sy-vline 
WA_ITAGCYCONTH_STR-XPRINTREC sy-vline 
WA_ITAGCYCONTH_STR-CLCOMPCODE sy-vline 
WA_ITAGCYCONTH_STR-COMPCODE sy-vline 
WA_ITAGCYCONTH_STR-TRCURRENCY sy-vline 
WA_ITAGCYCONTH_STR-CURRENCY sy-vline 
WA_ITAGCYCONTH_STR-XNO_PAYMETHOD sy-vline 
WA_ITAGCYCONTH_STR-XNO_REPAMOUNT sy-vline 
WA_ITAGCYCONTH_STR-DET_PAYAMOUNT sy-vline 
WA_ITAGCYCONTH_STR-XHIERCOLL sy-vline 
WA_ITAGCYCONTH_STR-CRDATE sy-vline 
WA_ITAGCYCONTH_STR-CRTIME sy-vline 
WA_ITAGCYCONTH_STR-CRNAME sy-vline 
WA_ITAGCYCONTH_STR-CHNGDATE sy-vline 
WA_ITAGCYCONTH_STR-CHNGTIME sy-vline 
WA_ITAGCYCONTH_STR-CHNGNAME sy-vline 
WA_ITAGCYCONTH_STR-DIFFCAT sy-vline 
WA_ITAGCYCONTH_STR-BUSCASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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