ABAP Select data from SAP table ITAGCYCONTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITAGCYCONTP
*  INTO TABLE @DATA(IT_ITAGCYCONTP2).
*--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_ITAGCYCONTP INDEX 1 INTO DATA(WA_ITAGCYCONTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITAGCYCONTP>-CLIENT = 1.
<ITAGCYCONTP>-CONT = 1.
<ITAGCYCONTP>-SEQNO = 1.
<ITAGCYCONTP>-TYPE = 1.
<ITAGCYCONTP>-POSSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITAGCYCONTP-CURR, sy-vline,
  WA_ITAGCYCONTP-PAYMENTAMOUNT, sy-vline,
  WA_ITAGCYCONTP-CLEARINGAMOUNT, sy-vline,
  WA_ITAGCYCONTP-WITHHTAXAMOUNT, sy-vline,
  WA_ITAGCYCONTP-INTERESTAMOUNT, sy-vline,
  WA_ITAGCYCONTP-DIFFERENCEAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITAGCYCONTP 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_ITAGCYCONTP 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_ITAGCYCONTP INTO WA_ITAGCYCONTP.


*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_ITAGCYCONTP-CONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYCONTP-CONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REV_CONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITAGCYCONTP-REV_CONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITAGCYCONTP-REV_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_ITAGCYCONTP_STR, 
CLIENT TYPE STRING,
CONT TYPE STRING,
SEQNO TYPE STRING,
TYPE TYPE STRING,
POSSTATUS TYPE STRING,
CURR TYPE STRING,
PAYMENTAMOUNT TYPE STRING,
CLEARINGAMOUNT TYPE STRING,
WITHHTAXAMOUNT TYPE STRING,
INTERESTAMOUNT TYPE STRING,
DIFFERENCEAMOUNT TYPE STRING,
DIFFRULE TYPE STRING,
COLLDATE TYPE STRING,
PAYLINK TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CRNAME TYPE STRING,
DIFFCAT TYPE STRING,
XSEVDIFF TYPE STRING,
REV_CONT TYPE STRING,
REV_SEQNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITAGCYCONTP_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_ITAGCYCONTP_STR-CLIENT sy-vline 
WA_ITAGCYCONTP_STR-CONT sy-vline 
WA_ITAGCYCONTP_STR-SEQNO sy-vline 
WA_ITAGCYCONTP_STR-TYPE sy-vline 
WA_ITAGCYCONTP_STR-POSSTATUS sy-vline 
WA_ITAGCYCONTP_STR-CURR sy-vline 
WA_ITAGCYCONTP_STR-PAYMENTAMOUNT sy-vline 
WA_ITAGCYCONTP_STR-CLEARINGAMOUNT sy-vline 
WA_ITAGCYCONTP_STR-WITHHTAXAMOUNT sy-vline 
WA_ITAGCYCONTP_STR-INTERESTAMOUNT sy-vline 
WA_ITAGCYCONTP_STR-DIFFERENCEAMOUNT sy-vline 
WA_ITAGCYCONTP_STR-DIFFRULE sy-vline 
WA_ITAGCYCONTP_STR-COLLDATE sy-vline 
WA_ITAGCYCONTP_STR-PAYLINK sy-vline 
WA_ITAGCYCONTP_STR-CRDATE sy-vline 
WA_ITAGCYCONTP_STR-CRTIME sy-vline 
WA_ITAGCYCONTP_STR-CRNAME sy-vline 
WA_ITAGCYCONTP_STR-DIFFCAT sy-vline 
WA_ITAGCYCONTP_STR-XSEVDIFF sy-vline 
WA_ITAGCYCONTP_STR-REV_CONT sy-vline 
WA_ITAGCYCONTP_STR-REV_SEQNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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