ABAP Select data from SAP table IMASTERWARRANTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMASTERWARRANTY
*  INTO TABLE @DATA(IT_IMASTERWARRANTY2).
*--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_IMASTERWARRANTY INDEX 1 INTO DATA(WA_IMASTERWARRANTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMASTERWARRANTY>-MANDT = 1.
<IMASTERWARRANTY>-MASTERWARRANTY = 1.
<IMASTERWARRANTY>-WARRANTYTYPE = 1.
<IMASTERWARRANTY>-VALIDITYSTARTDATE = 1.
<IMASTERWARRANTY>-VALIDITYENDDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMASTERWARRANTY-WARRANTYSORTFIELD, sy-vline,
  WA_IMASTERWARRANTY-WARRANTYGROUP, sy-vline,
  WA_IMASTERWARRANTY-CREATIONDATE, sy-vline,
  WA_IMASTERWARRANTY-CREATEDBYUSER, sy-vline,
  WA_IMASTERWARRANTY-LASTCHANGEDATE, sy-vline,
  WA_IMASTERWARRANTY-LASTCHANGEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMASTERWARRANTY 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_IMASTERWARRANTY 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_IMASTERWARRANTY INTO WA_IMASTERWARRANTY.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IMASTERWARRANTY-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMASTERWARRANTY-LANGUAGE.
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_IMASTERWARRANTY_STR, 
MANDT TYPE STRING,
MASTERWARRANTY TYPE STRING,
WARRANTYTYPE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
WARRANTYSORTFIELD TYPE STRING,
WARRANTYGROUP TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
ISDELETED TYPE STRING,
OBJECTINTERNALID TYPE STRING,
PARTNERSCHEMA TYPE STRING,
LANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMASTERWARRANTY_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_IMASTERWARRANTY_STR-MANDT sy-vline 
WA_IMASTERWARRANTY_STR-MASTERWARRANTY sy-vline 
WA_IMASTERWARRANTY_STR-WARRANTYTYPE sy-vline 
WA_IMASTERWARRANTY_STR-VALIDITYSTARTDATE sy-vline 
WA_IMASTERWARRANTY_STR-VALIDITYENDDATE sy-vline 
WA_IMASTERWARRANTY_STR-WARRANTYSORTFIELD sy-vline 
WA_IMASTERWARRANTY_STR-WARRANTYGROUP sy-vline 
WA_IMASTERWARRANTY_STR-CREATIONDATE sy-vline 
WA_IMASTERWARRANTY_STR-CREATEDBYUSER sy-vline 
WA_IMASTERWARRANTY_STR-LASTCHANGEDATE sy-vline 
WA_IMASTERWARRANTY_STR-LASTCHANGEDBYUSER sy-vline 
WA_IMASTERWARRANTY_STR-AUTHORIZATIONGROUP sy-vline 
WA_IMASTERWARRANTY_STR-ISDELETED sy-vline 
WA_IMASTERWARRANTY_STR-OBJECTINTERNALID sy-vline 
WA_IMASTERWARRANTY_STR-PARTNERSCHEMA sy-vline 
WA_IMASTERWARRANTY_STR-LANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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