ABAP Select data from SAP table ICLE_PAYMENT_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLE_PAYMENT_HEADER
*  INTO TABLE @DATA(IT_ICLE_PAYMENT_HEADER2).
*--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_ICLE_PAYMENT_HEADER INDEX 1 INTO DATA(WA_ICLE_PAYMENT_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLE_PAYMENT_HEADER>-ACTIVE = 1.
<ICLE_PAYMENT_HEADER>-CLAIM = 1.
<ICLE_PAYMENT_HEADER>-SUBCLAIM = 1.
<ICLE_PAYMENT_HEADER>-PAYMENT = 1.
<ICLE_PAYMENT_HEADER>-PAYCATTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLE_PAYMENT_HEADER-CURR, sy-vline,
  WA_ICLE_PAYMENT_HEADER-METHOD, sy-vline,
  WA_ICLE_PAYMENT_HEADER-POSTDATE, sy-vline,
  WA_ICLE_PAYMENT_HEADER-BPARTNER, sy-vline,
  WA_ICLE_PAYMENT_HEADER-DESCRIP, sy-vline,
  WA_ICLE_PAYMENT_HEADER-DOCUMENTREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLE_PAYMENT_HEADER 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_ICLE_PAYMENT_HEADER 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_ICLE_PAYMENT_HEADER INTO WA_ICLE_PAYMENT_HEADER.


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

*Conversion exit ALPHA, internal->external for field BPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICLE_PAYMENT_HEADER-BPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLE_PAYMENT_HEADER-BPARTNER.
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_ICLE_PAYMENT_HEADER_STR, 
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
SUBCLAIM TYPE STRING,
PAYMENT TYPE STRING,
PAYCATTXT TYPE STRING,
CURR TYPE STRING,
METHOD TYPE STRING,
POSTDATE TYPE STRING,
BPARTNER TYPE STRING,
DESCRIP TYPE STRING,
DOCUMENTREF TYPE STRING,
PAMPAID TYPE STRING,
POSTING_STATUS TYPE STRING,
METHODTXT TYPE STRING,
PAYCAT TYPE STRING,
STATUS TYPE STRING,
STATUSTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLE_PAYMENT_HEADER_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_ICLE_PAYMENT_HEADER_STR-ACTIVE sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-CLAIM sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-SUBCLAIM sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-PAYMENT sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-PAYCATTXT sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-CURR sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-METHOD sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-POSTDATE sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-BPARTNER sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-DESCRIP sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-DOCUMENTREF sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-PAMPAID sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-POSTING_STATUS sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-METHODTXT sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-PAYCAT sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-STATUS sy-vline 
WA_ICLE_PAYMENT_HEADER_STR-STATUSTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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