ABAP Select data from SAP table ISAFTINVLISTH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISAFTINVLISTH
*  INTO TABLE @DATA(IT_ISAFTINVLISTH2).
*--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_ISAFTINVLISTH INDEX 1 INTO DATA(WA_ISAFTINVLISTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISAFTINVLISTH>-MANDT = 1.
<ISAFTINVLISTH>-BILLINGDOCUMENT = 1.
<ISAFTINVLISTH>-BILLINGDOCUMENTISCANCELLED = 1.
<ISAFTINVLISTH>-CANCELLEDBILLINGDOCUMENT = 1.
<ISAFTINVLISTH>-ACCOUNTINGTRANSFERSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISAFTINVLISTH-BILLINGDOCUMENTDATE, sy-vline,
  WA_ISAFTINVLISTH-CREATIONDATE, sy-vline,
  WA_ISAFTINVLISTH-CREATIONTIME, sy-vline,
  WA_ISAFTINVLISTH-SDDOCUMENTCATEGORY, sy-vline,
  WA_ISAFTINVLISTH-BILLINGDOCUMENTCATEGORY, sy-vline,
  WA_ISAFTINVLISTH-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISAFTINVLISTH 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_ISAFTINVLISTH 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_ISAFTINVLISTH INTO WA_ISAFTINVLISTH.


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

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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ISAFTINVLISTH-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISAFTINVLISTH-FISCALYEAR.
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_ISAFTINVLISTH_STR, 
MANDT TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
BILLINGDOCUMENTISCANCELLED TYPE STRING,
CANCELLEDBILLINGDOCUMENT TYPE STRING,
ACCOUNTINGTRANSFERSTATUS TYPE STRING,
BILLINGDOCUMENTDATE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
BILLINGDOCUMENTCATEGORY TYPE STRING,
CREATEDBYUSER TYPE STRING,
EXCHANGERATEDATE TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TOTALTAXAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CUSTOMERPAYMENTTERMS TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
PAYERPARTY TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGEXCHANGERATE TYPE STRING,
VATREGISTRATION TYPE STRING,
VATREGISTRATIONCOUNTRY TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISAFTINVLISTH_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_ISAFTINVLISTH_STR-MANDT sy-vline 
WA_ISAFTINVLISTH_STR-BILLINGDOCUMENT sy-vline 
WA_ISAFTINVLISTH_STR-BILLINGDOCUMENTISCANCELLED sy-vline 
WA_ISAFTINVLISTH_STR-CANCELLEDBILLINGDOCUMENT sy-vline 
WA_ISAFTINVLISTH_STR-ACCOUNTINGTRANSFERSTATUS sy-vline 
WA_ISAFTINVLISTH_STR-BILLINGDOCUMENTDATE sy-vline 
WA_ISAFTINVLISTH_STR-CREATIONDATE sy-vline 
WA_ISAFTINVLISTH_STR-CREATIONTIME sy-vline 
WA_ISAFTINVLISTH_STR-SDDOCUMENTCATEGORY sy-vline 
WA_ISAFTINVLISTH_STR-BILLINGDOCUMENTCATEGORY sy-vline 
WA_ISAFTINVLISTH_STR-CREATEDBYUSER sy-vline 
WA_ISAFTINVLISTH_STR-EXCHANGERATEDATE sy-vline 
WA_ISAFTINVLISTH_STR-TOTALNETAMOUNT sy-vline 
WA_ISAFTINVLISTH_STR-TOTALTAXAMOUNT sy-vline 
WA_ISAFTINVLISTH_STR-TRANSACTIONCURRENCY sy-vline 
WA_ISAFTINVLISTH_STR-CUSTOMERPAYMENTTERMS sy-vline 
WA_ISAFTINVLISTH_STR-COMPANYCODE sy-vline 
WA_ISAFTINVLISTH_STR-COMPANYCODECURRENCY sy-vline 
WA_ISAFTINVLISTH_STR-PAYERPARTY sy-vline 
WA_ISAFTINVLISTH_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_ISAFTINVLISTH_STR-FISCALYEAR sy-vline 
WA_ISAFTINVLISTH_STR-ACCOUNTINGEXCHANGERATE sy-vline 
WA_ISAFTINVLISTH_STR-VATREGISTRATION sy-vline 
WA_ISAFTINVLISTH_STR-VATREGISTRATIONCOUNTRY sy-vline 
WA_ISAFTINVLISTH_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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