ABAP Select data from SAP table ISU_INVREQSIMR_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_INVREQSIMR_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_INVREQSIMR_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_INVREQSIMR_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_INVREQSIMR_MT TYPE STANDARD TABLE OF ISU_INVREQSIMR_MT,
      WA_ISU_INVREQSIMR_MT TYPE ISU_INVREQSIMR_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_INVREQSIMR_MT> TYPE ISU_INVREQSIMR_MT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_INVREQSIMR_MT
*  INTO TABLE @DATA(IT_ISU_INVREQSIMR_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_INVREQSIMR_MT INDEX 1 INTO DATA(WA_ISU_INVREQSIMR_MT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_INVREQSIMR_MT>-CONTROLLER = 1.
<ISU_INVREQSIMR_MT>-REQUEST = 1.
<ISU_INVREQSIMR_MT>-CONTROLLER = 1.
<ISU_INVREQSIMR_MT>-UTILITIES_INVOICE_REQUEST = 1.
<ISU_INVREQSIMR_MT>-CONTROLLER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_INVREQSIMR_MT-UTILITIESCONTRACTID, sy-vline,
  WA_ISU_INVREQSIMR_MT-SIMULATIONCONDITIONS, sy-vline,
  WA_ISU_INVREQSIMR_MT-CONTROLLER, sy-vline,
  WA_ISU_INVREQSIMR_MT-BILLINGPERIODSTARTDATE, sy-vline,
  WA_ISU_INVREQSIMR_MT-BILLINGPERIODENDDATE, sy-vline,
  WA_ISU_INVREQSIMR_MT-UTILSINVCREQSIMUSCECODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_INVREQSIMR_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_INVREQSIMR_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_INVREQSIMR_MT INTO WA_ISU_INVREQSIMR_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_INVREQSIMR_MT_STR, 
CONTROLLER TYPE STRING,
REQUEST TYPE STRING,
CONTROLLER TYPE STRING,
UTILITIES_INVOICE_REQUEST TYPE STRING,
CONTROLLER TYPE STRING,
UTILITIESCONTRACTID TYPE STRING,
SIMULATIONCONDITIONS TYPE STRING,
CONTROLLER TYPE STRING,
BILLINGPERIODSTARTDATE TYPE STRING,
BILLINGPERIODENDDATE TYPE STRING,
UTILSINVCREQSIMUSCECODE TYPE STRING,
BILLRATEGROUPDETCODE TYPE STRING,
TAXJURISDICTIONCODE TYPE STRING,
SIMPERIODNUMBER TYPE STRING,
SIMCONDQTY_TAB TYPE STRING,
SIMCONDBILTERMS_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_INVREQSIMR_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_INVREQSIMR_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVREQSIMR_MT_STR-REQUEST sy-vline 
WA_ISU_INVREQSIMR_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVREQSIMR_MT_STR-UTILITIES_INVOICE_REQUEST sy-vline 
WA_ISU_INVREQSIMR_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVREQSIMR_MT_STR-UTILITIESCONTRACTID sy-vline 
WA_ISU_INVREQSIMR_MT_STR-SIMULATIONCONDITIONS sy-vline 
WA_ISU_INVREQSIMR_MT_STR-CONTROLLER sy-vline 
WA_ISU_INVREQSIMR_MT_STR-BILLINGPERIODSTARTDATE sy-vline 
WA_ISU_INVREQSIMR_MT_STR-BILLINGPERIODENDDATE sy-vline 
WA_ISU_INVREQSIMR_MT_STR-UTILSINVCREQSIMUSCECODE sy-vline 
WA_ISU_INVREQSIMR_MT_STR-BILLRATEGROUPDETCODE sy-vline 
WA_ISU_INVREQSIMR_MT_STR-TAXJURISDICTIONCODE sy-vline 
WA_ISU_INVREQSIMR_MT_STR-SIMPERIODNUMBER sy-vline 
WA_ISU_INVREQSIMR_MT_STR-SIMCONDQTY_TAB sy-vline 
WA_ISU_INVREQSIMR_MT_STR-SIMCONDBILTERMS_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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