ABAP Select data from SAP table IMMSESITAPI01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IMMSESITAPI01 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 IMMSESITAPI01. 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 IMMSESITAPI01 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_IMMSESITAPI01 TYPE STANDARD TABLE OF IMMSESITAPI01,
      WA_IMMSESITAPI01 TYPE IMMSESITAPI01,
      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: <IMMSESITAPI01> TYPE IMMSESITAPI01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IMMSESITAPI01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IMMSESITAPI01
  INTO TABLE IT_IMMSESITAPI01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMMSESITAPI01
*  INTO TABLE @DATA(IT_IMMSESITAPI012).
*--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_IMMSESITAPI01 INDEX 1 INTO DATA(WA_IMMSESITAPI012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IMMSESITAPI01 ASSIGNING <IMMSESITAPI01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMMSESITAPI01>-MANDT = 1.
<IMMSESITAPI01>-SERVICEENTRYSHEET = 1.
<IMMSESITAPI01>-SERVICEENTRYSHEETITEM = 1.
<IMMSESITAPI01>-PURCHASEORDER = 1.
<IMMSESITAPI01>-PURCHASEORDERITEM = 1.

ENDLOOP.

LOOP AT IT_IMMSESITAPI01 INTO WA_IMMSESITAPI01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMMSESITAPI01-ISDELETED, sy-vline,
  WA_IMMSESITAPI01-SERVICE, sy-vline,
  WA_IMMSESITAPI01-SERVICEENTRYSHEETITEMDESC, sy-vline,
  WA_IMMSESITAPI01-SERVICEPERFORMER, sy-vline,
  WA_IMMSESITAPI01-ACCOUNTASSIGNMENTCATEGORY, sy-vline,
  WA_IMMSESITAPI01-MULTIPLEACCTASSGMTDISTRIBUTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMMSESITAPI01 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_IMMSESITAPI01 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_IMMSESITAPI01 INTO WA_IMMSESITAPI01.


*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 SERVICEENTRYSHEET
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-SERVICEENTRYSHEET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-SERVICEENTRYSHEET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SERVICE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-SERVICE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-SERVICE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SERVICEPERFORMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-SERVICEPERFORMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-SERVICEPERFORMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMMSESITAPI01-PURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMSESITAPI01-PURCHASECONTRACT.
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_IMMSESITAPI01_STR, 
MANDT TYPE STRING,
SERVICEENTRYSHEET TYPE STRING,
SERVICEENTRYSHEETITEM TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
ISDELETED TYPE STRING,
SERVICE TYPE STRING,
SERVICEENTRYSHEETITEMDESC TYPE STRING,
SERVICEPERFORMER TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
WORKITEM TYPE STRING,
CONFIRMEDQUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
SERVICEPERFORMANCEDATE TYPE STRING,
ORIGINOBJECT TYPE STRING,
NETAMOUNT TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
PURGDOCITEMEXTERNALREFERENCE TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PLANT TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMMSESITAPI01_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_IMMSESITAPI01_STR-MANDT sy-vline 
WA_IMMSESITAPI01_STR-SERVICEENTRYSHEET sy-vline 
WA_IMMSESITAPI01_STR-SERVICEENTRYSHEETITEM sy-vline 
WA_IMMSESITAPI01_STR-PURCHASEORDER sy-vline 
WA_IMMSESITAPI01_STR-PURCHASEORDERITEM sy-vline 
WA_IMMSESITAPI01_STR-ISDELETED sy-vline 
WA_IMMSESITAPI01_STR-SERVICE sy-vline 
WA_IMMSESITAPI01_STR-SERVICEENTRYSHEETITEMDESC sy-vline 
WA_IMMSESITAPI01_STR-SERVICEPERFORMER sy-vline 
WA_IMMSESITAPI01_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_IMMSESITAPI01_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_IMMSESITAPI01_STR-WORKITEM sy-vline 
WA_IMMSESITAPI01_STR-CONFIRMEDQUANTITY sy-vline 
WA_IMMSESITAPI01_STR-QUANTITYUNIT sy-vline 
WA_IMMSESITAPI01_STR-SERVICEPERFORMANCEDATE sy-vline 
WA_IMMSESITAPI01_STR-ORIGINOBJECT sy-vline 
WA_IMMSESITAPI01_STR-NETAMOUNT sy-vline 
WA_IMMSESITAPI01_STR-NETPRICEAMOUNT sy-vline 
WA_IMMSESITAPI01_STR-CURRENCY sy-vline 
WA_IMMSESITAPI01_STR-PURGDOCITEMEXTERNALREFERENCE sy-vline 
WA_IMMSESITAPI01_STR-PURCHASECONTRACT sy-vline 
WA_IMMSESITAPI01_STR-PURCHASECONTRACTITEM sy-vline 
WA_IMMSESITAPI01_STR-PURCHASINGORGANIZATION sy-vline 
WA_IMMSESITAPI01_STR-PURCHASINGGROUP sy-vline 
WA_IMMSESITAPI01_STR-PLANT sy-vline 
WA_IMMSESITAPI01_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_IMMSESITAPI01_STR-CREATIONDATETIME sy-vline 
WA_IMMSESITAPI01_STR-CREATEDBYUSER sy-vline 
WA_IMMSESITAPI01_STR-LASTCHANGEDATETIME sy-vline 
WA_IMMSESITAPI01_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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