ABAP Select data from SAP table ICHPSRCNTDT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICHPSRCNTDT
*  INTO TABLE @DATA(IT_ICHPSRCNTDT2).
*--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_ICHPSRCNTDT INDEX 1 INTO DATA(WA_ICHPSRCNTDT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICHPSRCNTDT>-MANDT = 1.
<ICHPSRCNTDT>-PAYTSLIPWTHREFSUBSCRIBER = 1.
<ICHPSRCNTDT>-CUSTOMER = 1.
<ICHPSRCNTDT>-COMPANYCODE = 1.
<ICHPSRCNTDT>-ISLEADINGCOMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICHPSRCNTDT-ACCTDETNFREEDEFINEDATTRIBUTE, sy-vline,
  WA_ICHPSRCNTDT-ACCOUNTINGDOCUMENTNUMBEROFFSET, sy-vline,
  WA_ICHPSRCNTDT-ACCOUNTINGDOCUMENTNUMBERLENGTH, sy-vline,
  WA_ICHPSRCNTDT-CUSTOMERNUMBEROFFSET, sy-vline,
  WA_ICHPSRCNTDT-CUSTOMERNUMBERLENGTH, sy-vline,
  WA_ICHPSRCNTDT-SALESORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICHPSRCNTDT 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_ICHPSRCNTDT 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_ICHPSRCNTDT INTO WA_ICHPSRCNTDT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICHPSRCNTDT_STR, 
MANDT TYPE STRING,
PAYTSLIPWTHREFSUBSCRIBER TYPE STRING,
CUSTOMER TYPE STRING,
COMPANYCODE TYPE STRING,
ISLEADINGCOMPANYCODE TYPE STRING,
ACCTDETNFREEDEFINEDATTRIBUTE TYPE STRING,
ACCOUNTINGDOCUMENTNUMBEROFFSET TYPE STRING,
ACCOUNTINGDOCUMENTNUMBERLENGTH TYPE STRING,
CUSTOMERNUMBEROFFSET TYPE STRING,
CUSTOMERNUMBERLENGTH TYPE STRING,
SALESORGANIZATION TYPE STRING,
BANK TYPE STRING,
PAYTSLIPWTHREFISNOTPRINTED TYPE STRING,
PAYTSLIPWTHREFPROCEDURE TYPE STRING,
DUNNINGNOTICEISPRINTED TYPE STRING,
ORIGINAPPLICATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICHPSRCNTDT_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_ICHPSRCNTDT_STR-MANDT sy-vline 
WA_ICHPSRCNTDT_STR-PAYTSLIPWTHREFSUBSCRIBER sy-vline 
WA_ICHPSRCNTDT_STR-CUSTOMER sy-vline 
WA_ICHPSRCNTDT_STR-COMPANYCODE sy-vline 
WA_ICHPSRCNTDT_STR-ISLEADINGCOMPANYCODE sy-vline 
WA_ICHPSRCNTDT_STR-ACCTDETNFREEDEFINEDATTRIBUTE sy-vline 
WA_ICHPSRCNTDT_STR-ACCOUNTINGDOCUMENTNUMBEROFFSET sy-vline 
WA_ICHPSRCNTDT_STR-ACCOUNTINGDOCUMENTNUMBERLENGTH sy-vline 
WA_ICHPSRCNTDT_STR-CUSTOMERNUMBEROFFSET sy-vline 
WA_ICHPSRCNTDT_STR-CUSTOMERNUMBERLENGTH sy-vline 
WA_ICHPSRCNTDT_STR-SALESORGANIZATION sy-vline 
WA_ICHPSRCNTDT_STR-BANK sy-vline 
WA_ICHPSRCNTDT_STR-PAYTSLIPWTHREFISNOTPRINTED sy-vline 
WA_ICHPSRCNTDT_STR-PAYTSLIPWTHREFPROCEDURE sy-vline 
WA_ICHPSRCNTDT_STR-DUNNINGNOTICEISPRINTED sy-vline 
WA_ICHPSRCNTDT_STR-ORIGINAPPLICATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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