ABAP Select data from SAP table EWM_MU3_I03_REGISTER 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 EWM_MU3_I03_REGISTER 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 EWM_MU3_I03_REGISTER. 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 EWM_MU3_I03_REGISTER 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_EWM_MU3_I03_REGISTER TYPE STANDARD TABLE OF EWM_MU3_I03_REGISTER,
      WA_EWM_MU3_I03_REGISTER TYPE EWM_MU3_I03_REGISTER,
      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: <EWM_MU3_I03_REGISTER> TYPE EWM_MU3_I03_REGISTER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EWM_MU3_I03_REGISTER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EWM_MU3_I03_REGISTER
  INTO TABLE IT_EWM_MU3_I03_REGISTER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWM_MU3_I03_REGISTER
*  INTO TABLE @DATA(IT_EWM_MU3_I03_REGISTER2).
*--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_EWM_MU3_I03_REGISTER INDEX 1 INTO DATA(WA_EWM_MU3_I03_REGISTER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EWM_MU3_I03_REGISTER ASSIGNING <EWM_MU3_I03_REGISTER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWM_MU3_I03_REGISTER>-EQUNR = 1.
<EWM_MU3_I03_REGISTER>-ZWNUMMER = 1.
<EWM_MU3_I03_REGISTER>-ABLBELNR = 1.
<EWM_MU3_I03_REGISTER>-KENNZIFF = 1.
<EWM_MU3_I03_REGISTER>-E_ZWART = 1.

ENDLOOP.

LOOP AT IT_EWM_MU3_I03_REGISTER INTO WA_EWM_MU3_I03_REGISTER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWM_MU3_I03_REGISTER-STANZVORE, sy-vline,
  WA_EWM_MU3_I03_REGISTER-STANZNACE, sy-vline,
  WA_EWM_MU3_I03_REGISTER-ZWFAKT, sy-vline,
  WA_EWM_MU3_I03_REGISTER-MASSREAD, sy-vline,
  WA_EWM_MU3_I03_REGISTER-LAST_RESULT, sy-vline,
  WA_EWM_MU3_I03_REGISTER-LR_ADAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWM_MU3_I03_REGISTER 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_EWM_MU3_I03_REGISTER 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_EWM_MU3_I03_REGISTER INTO WA_EWM_MU3_I03_REGISTER.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I03_REGISTER-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I03_REGISTER-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABLBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I03_REGISTER-ABLBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I03_REGISTER-ABLBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASSREAD
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I03_REGISTER-MASSREAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I03_REGISTER-MASSREAD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LR_MASSREAD
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I03_REGISTER-LR_MASSREAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I03_REGISTER-LR_MASSREAD.
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_EWM_MU3_I03_REGISTER_STR, 
EQUNR TYPE STRING,
ZWNUMMER TYPE STRING,
ABLBELNR TYPE STRING,
KENNZIFF TYPE STRING,
E_ZWART TYPE STRING,
STANZVORE TYPE STRING,
STANZNACE TYPE STRING,
ZWFAKT TYPE STRING,
MASSREAD TYPE STRING,
LAST_RESULT TYPE STRING,
LR_ADAT TYPE STRING,
LR_MASSREAD TYPE STRING,
LR_ISTABLART TYPE STRING,
ESTIMATED_RESULT TYPE STRING,
E_VERBERW TYPE STRING,
W_MR_RESULT_MIN TYPE STRING,
W_MR_RESULT_MAX TYPE STRING,
E_MR_RESULT_MIN TYPE STRING,
E_MR_RESULT_MAX TYPE STRING,
TARIFTYP TYPE STRING,
PERIOD_ALT TYPE STRING,
ABLESER TYPE STRING,
ABLEINH TYPE STRING,
ADATSOLL TYPE STRING,
ABLESGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWM_MU3_I03_REGISTER_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_EWM_MU3_I03_REGISTER_STR-EQUNR sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ZWNUMMER sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ABLBELNR sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-KENNZIFF sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-E_ZWART sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-STANZVORE sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-STANZNACE sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ZWFAKT sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-MASSREAD sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-LAST_RESULT sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-LR_ADAT sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-LR_MASSREAD sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-LR_ISTABLART sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ESTIMATED_RESULT sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-E_VERBERW sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-W_MR_RESULT_MIN sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-W_MR_RESULT_MAX sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-E_MR_RESULT_MIN sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-E_MR_RESULT_MAX sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-TARIFTYP sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-PERIOD_ALT sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ABLESER sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ABLEINH sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ADATSOLL sy-vline 
WA_EWM_MU3_I03_REGISTER_STR-ABLESGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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