ABAP Select data from SAP table ISU_INVOICE001Q_MT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_INVOICE001Q_MT 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 ISU_INVOICE001Q_MT. 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 ISU_INVOICE001Q_MT 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_ISU_INVOICE001Q_MT TYPE STANDARD TABLE OF ISU_INVOICE001Q_MT,
      WA_ISU_INVOICE001Q_MT TYPE ISU_INVOICE001Q_MT,
      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: <ISU_INVOICE001Q_MT> TYPE ISU_INVOICE001Q_MT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU_INVOICE001Q_MT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU_INVOICE001Q_MT
  INTO TABLE IT_ISU_INVOICE001Q_MT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_INVOICE001Q_MT
*  INTO TABLE @DATA(IT_ISU_INVOICE001Q_MT2).
*--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_ISU_INVOICE001Q_MT INDEX 1 INTO DATA(WA_ISU_INVOICE001Q_MT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU_INVOICE001Q_MT ASSIGNING <ISU_INVOICE001Q_MT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_INVOICE001Q_MT>-CONTROLLER = 1.
<ISU_INVOICE001Q_MT>-QUERY = 1.
<ISU_INVOICE001Q_MT>-CONTROLLER = 1.
<ISU_INVOICE001Q_MT>-ELEMENTS = 1.
<ISU_INVOICE001Q_MT>-CONTROLLER = 1.

ENDLOOP.

LOOP AT IT_ISU_INVOICE001Q_MT INTO WA_ISU_INVOICE001Q_MT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_INVOICE001Q_MT-UTILITIES_INVOICE_ID, sy-vline,
  WA_ISU_INVOICE001Q_MT-POSTING_DATE, sy-vline,
  WA_ISU_INVOICE001Q_MT-BILLING_PERIOD_ALLOCATION_TEXT, sy-vline,
  WA_ISU_INVOICE001Q_MT-UTILITIES_INVOICE_REASON_CODE, sy-vline,
  WA_ISU_INVOICE001Q_MT-INVOICE_LEGALLY_REQUIRED_ID, sy-vline,
  WA_ISU_INVOICE001Q_MT-CONTRACT_ACCOUNT_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_INVOICE001Q_MT 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_ISU_INVOICE001Q_MT 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_ISU_INVOICE001Q_MT INTO WA_ISU_INVOICE001Q_MT.


*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_ISU_INVOICE001Q_MT_STR, 
CONTROLLER TYPE STRING,
QUERY TYPE STRING,
CONTROLLER TYPE STRING,
ELEMENTS TYPE STRING,
CONTROLLER TYPE STRING,
UTILITIES_INVOICE_ID TYPE STRING,
POSTING_DATE TYPE STRING,
BILLING_PERIOD_ALLOCATION_TEXT TYPE STRING,
UTILITIES_INVOICE_REASON_CODE TYPE STRING,
INVOICE_LEGALLY_REQUIRED_ID TYPE STRING,
CONTRACT_ACCOUNT_ID TYPE STRING,
COLLECTIVE_CONTRACT_ACCOUNT_ID TYPE STRING,
BUSINESS_PARTNER_ID TYPE STRING,
CNC_UTILITIES_INVOICEID TYPE STRING,
SIMULATED_INDICATOR TYPE STRING,
NOT_RELEASED_INDICATOR TYPE STRING,
INVOICE_VALIDATION_TYPE_CODE TYPE STRING,
INVOICE_REVISION_REASON_CODE TYPE STRING,
PROCESSING_CONDITIONS TYPE STRING,
CONTROLLER TYPE STRING,
QUERY_HITS_MAXIMUM_NUMBER_VALU TYPE STRING,
UNLIMITED_QUERY_HITS_INDICATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_INVOICE001Q_MT_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_ISU_INVOICE001Q_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVOICE001Q_MT_STR-QUERY sy-vline 
WA_ISU_INVOICE001Q_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVOICE001Q_MT_STR-ELEMENTS sy-vline 
WA_ISU_INVOICE001Q_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVOICE001Q_MT_STR-UTILITIES_INVOICE_ID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-POSTING_DATE sy-vline 
WA_ISU_INVOICE001Q_MT_STR-BILLING_PERIOD_ALLOCATION_TEXT sy-vline 
WA_ISU_INVOICE001Q_MT_STR-UTILITIES_INVOICE_REASON_CODE sy-vline 
WA_ISU_INVOICE001Q_MT_STR-INVOICE_LEGALLY_REQUIRED_ID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-CONTRACT_ACCOUNT_ID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-COLLECTIVE_CONTRACT_ACCOUNT_ID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-BUSINESS_PARTNER_ID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-CNC_UTILITIES_INVOICEID sy-vline 
WA_ISU_INVOICE001Q_MT_STR-SIMULATED_INDICATOR sy-vline 
WA_ISU_INVOICE001Q_MT_STR-NOT_RELEASED_INDICATOR sy-vline 
WA_ISU_INVOICE001Q_MT_STR-INVOICE_VALIDATION_TYPE_CODE sy-vline 
WA_ISU_INVOICE001Q_MT_STR-INVOICE_REVISION_REASON_CODE sy-vline 
WA_ISU_INVOICE001Q_MT_STR-PROCESSING_CONDITIONS sy-vline 
WA_ISU_INVOICE001Q_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVOICE001Q_MT_STR-QUERY_HITS_MAXIMUM_NUMBER_VALU sy-vline 
WA_ISU_INVOICE001Q_MT_STR-UNLIMITED_QUERY_HITS_INDICATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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