ABAP Select data from SAP table ICOLLSINVMEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICOLLSINVMEM
*  INTO TABLE @DATA(IT_ICOLLSINVMEM2).
*--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_ICOLLSINVMEM INDEX 1 INTO DATA(WA_ICOLLSINVMEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICOLLSINVMEM>-MANDT = 1.
<ICOLLSINVMEM>-COMPANYCODE = 1.
<ICOLLSINVMEM>-ACCOUNTINGDOCUMENT = 1.
<ICOLLSINVMEM>-FISCALYEAR = 1.
<ICOLLSINVMEM>-ACCOUNTINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICOLLSINVMEM-CUSTOMER, sy-vline,
  WA_ICOLLSINVMEM-BILLINGDOCUMENT, sy-vline,
  WA_ICOLLSINVMEM-POSTINGDATE, sy-vline,
  WA_ICOLLSINVMEM-NETDUEDATE, sy-vline,
  WA_ICOLLSINVMEM-DUEDATE, sy-vline,
  WA_ICOLLSINVMEM-CASHDISCOUNT1DUEDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICOLLSINVMEM 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_ICOLLSINVMEM 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_ICOLLSINVMEM INTO WA_ICOLLSINVMEM.


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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICOLLSINVMEM-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOLLSINVMEM-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICOLLSINVMEM-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOLLSINVMEM-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILLINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICOLLSINVMEM-BILLINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOLLSINVMEM-BILLINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BRANCHACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICOLLSINVMEM-BRANCHACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOLLSINVMEM-BRANCHACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCEDOCUMENTLOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICOLLSINVMEM-REFERENCEDOCUMENTLOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICOLLSINVMEM-REFERENCEDOCUMENTLOGICALSYSTEM.
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_ICOLLSINVMEM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
CUSTOMER TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
POSTINGDATE TYPE STRING,
NETDUEDATE TYPE STRING,
DUEDATE TYPE STRING,
CASHDISCOUNT1DUEDATE TYPE STRING,
PAYMENTDATE TYPE STRING,
LASTDUNNINGDATE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
PAIDAMOUNT TYPE STRING,
OPENAMOUNTINDOCUMENTCURRENCY TYPE STRING,
CREDITEDAMOUNT TYPE STRING,
DUNNEDAMOUNT TYPE STRING,
ARRANGEDAMOUNT TYPE STRING,
CASHDISCOUNTAMTINTRANSACCRCY TYPE STRING,
BRANCHACCOUNT TYPE STRING,
OBJECTKEY TYPE STRING,
OVERDUEDAYS TYPE STRING,
LASTDUNNINGDURATIONINDAYS TYPE STRING,
DUNNINGBLOCKINGREASON TYPE STRING,
COUNTRY TYPE STRING,
PAYMENTMETHOD TYPE STRING,
REFERENCEDOCUMENTLOGICALSYSTEM TYPE STRING,
COLLECTIONSINVOICEUNIQUEID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICOLLSINVMEM_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_ICOLLSINVMEM_STR-MANDT sy-vline 
WA_ICOLLSINVMEM_STR-COMPANYCODE sy-vline 
WA_ICOLLSINVMEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_ICOLLSINVMEM_STR-FISCALYEAR sy-vline 
WA_ICOLLSINVMEM_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_ICOLLSINVMEM_STR-CUSTOMER sy-vline 
WA_ICOLLSINVMEM_STR-BILLINGDOCUMENT sy-vline 
WA_ICOLLSINVMEM_STR-POSTINGDATE sy-vline 
WA_ICOLLSINVMEM_STR-NETDUEDATE sy-vline 
WA_ICOLLSINVMEM_STR-DUEDATE sy-vline 
WA_ICOLLSINVMEM_STR-CASHDISCOUNT1DUEDATE sy-vline 
WA_ICOLLSINVMEM_STR-PAYMENTDATE sy-vline 
WA_ICOLLSINVMEM_STR-LASTDUNNINGDATE sy-vline 
WA_ICOLLSINVMEM_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICOLLSINVMEM_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_ICOLLSINVMEM_STR-PAIDAMOUNT sy-vline 
WA_ICOLLSINVMEM_STR-OPENAMOUNTINDOCUMENTCURRENCY sy-vline 
WA_ICOLLSINVMEM_STR-CREDITEDAMOUNT sy-vline 
WA_ICOLLSINVMEM_STR-DUNNEDAMOUNT sy-vline 
WA_ICOLLSINVMEM_STR-ARRANGEDAMOUNT sy-vline 
WA_ICOLLSINVMEM_STR-CASHDISCOUNTAMTINTRANSACCRCY sy-vline 
WA_ICOLLSINVMEM_STR-BRANCHACCOUNT sy-vline 
WA_ICOLLSINVMEM_STR-OBJECTKEY sy-vline 
WA_ICOLLSINVMEM_STR-OVERDUEDAYS sy-vline 
WA_ICOLLSINVMEM_STR-LASTDUNNINGDURATIONINDAYS sy-vline 
WA_ICOLLSINVMEM_STR-DUNNINGBLOCKINGREASON sy-vline 
WA_ICOLLSINVMEM_STR-COUNTRY sy-vline 
WA_ICOLLSINVMEM_STR-PAYMENTMETHOD sy-vline 
WA_ICOLLSINVMEM_STR-REFERENCEDOCUMENTLOGICALSYSTEM sy-vline 
WA_ICOLLSINVMEM_STR-COLLECTIONSINVOICEUNIQUEID sy-vline      INTO ld_text SEPARATED BY SPACE.

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