ABAP Select data from SAP table ICLPAY_HISTORY_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLPAY_HISTORY_ALV
*  INTO TABLE @DATA(IT_ICLPAY_HISTORY_ALV2).
*--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_ICLPAY_HISTORY_ALV INDEX 1 INTO DATA(WA_ICLPAY_HISTORY_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLPAY_HISTORY_ALV>-PAYMENT = 1.
<ICLPAY_HISTORY_ALV>-PAYMENTITEM = 1.
<ICLPAY_HISTORY_ALV>-BENTYPE = 1.
<ICLPAY_HISTORY_ALV>-PAMPAID = 1.
<ICLPAY_HISTORY_ALV>-CURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLPAY_HISTORY_ALV-REFNO, sy-vline,
  WA_ICLPAY_HISTORY_ALV-BUDAT, sy-vline,
  WA_ICLPAY_HISTORY_ALV-BLDAT, sy-vline,
  WA_ICLPAY_HISTORY_ALV-SUBCLAIM, sy-vline,
  WA_ICLPAY_HISTORY_ALV-ITEM, sy-vline,
  WA_ICLPAY_HISTORY_ALV-CLAIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLPAY_HISTORY_ALV 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_ICLPAY_HISTORY_ALV 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_ICLPAY_HISTORY_ALV INTO WA_ICLPAY_HISTORY_ALV.


*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_ICLPAY_HISTORY_ALV-CLAIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLPAY_HISTORY_ALV-CLAIM.
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_ICLPAY_HISTORY_ALV_STR, 
PAYMENT TYPE STRING,
PAYMENTITEM TYPE STRING,
BENTYPE TYPE STRING,
PAMPAID TYPE STRING,
CURR TYPE STRING,
REFNO TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
SUBCLAIM TYPE STRING,
ITEM TYPE STRING,
CLAIM TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDATE TYPE STRING,
CREATETIME TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDATE TYPE STRING,
CHANGETIME TYPE STRING,
APPROVEDBY TYPE STRING,
APPROVEDDATE TYPE STRING,
APPROVEDTIME TYPE STRING,
TRANSFERDATE TYPE STRING,
TRANSFERTIME TYPE STRING,
BKID TYPE STRING,
STATUS TYPE STRING,
METHOD TYPE STRING,
NOTE TYPE STRING,
CLIENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLPAY_HISTORY_ALV_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_ICLPAY_HISTORY_ALV_STR-PAYMENT sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-PAYMENTITEM sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-BENTYPE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-PAMPAID sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CURR sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-REFNO sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-BUDAT sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-BLDAT sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-SUBCLAIM sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-ITEM sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CLAIM sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CREATEDBY sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CREATEDATE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CREATETIME sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CHANGEDBY sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CHANGEDATE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CHANGETIME sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-APPROVEDBY sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-APPROVEDDATE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-APPROVEDTIME sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-TRANSFERDATE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-TRANSFERTIME sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-BKID sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-STATUS sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-METHOD sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-NOTE sy-vline 
WA_ICLPAY_HISTORY_ALV_STR-CLIENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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