ABAP Select data from SAP table EWM_MU_I01_DEV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EWM_MU_I01_DEV 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_MU_I01_DEV. 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_MU_I01_DEV 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_MU_I01_DEV TYPE STANDARD TABLE OF EWM_MU_I01_DEV,
      WA_EWM_MU_I01_DEV TYPE EWM_MU_I01_DEV,
      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_MU_I01_DEV> TYPE EWM_MU_I01_DEV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EWM_MU_I01_DEV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EWM_MU_I01_DEV
  INTO TABLE IT_EWM_MU_I01_DEV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWM_MU_I01_DEV
*  INTO TABLE @DATA(IT_EWM_MU_I01_DEV2).
*--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_MU_I01_DEV INDEX 1 INTO DATA(WA_EWM_MU_I01_DEV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EWM_MU_I01_DEV ASSIGNING <EWM_MU_I01_DEV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWM_MU_I01_DEV>-FLAG_ORDER = 1.
<EWM_MU_I01_DEV>-AUFNR = 1.
<EWM_MU_I01_DEV>-QMNUM = 1.
<EWM_MU_I01_DEV>-EQUNR = 1.
<EWM_MU_I01_DEV>-GERAET = 1.

ENDLOOP.

LOOP AT IT_EWM_MU_I01_DEV INTO WA_EWM_MU_I01_DEV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWM_MU_I01_DEV-MATNR, sy-vline,
  WA_EWM_MU_I01_DEV-TPLNR_DL, sy-vline,
  WA_EWM_MU_I01_DEV-SPARTE, sy-vline,
  WA_EWM_MU_I01_DEV-BAUFORM, sy-vline,
  WA_EWM_MU_I01_DEV-DISCSTATE, sy-vline,
  WA_EWM_MU_I01_DEV-BGLJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWM_MU_I01_DEV 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_MU_I01_DEV 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_MU_I01_DEV INTO WA_EWM_MU_I01_DEV.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR_DL
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU_I01_DEV-TPLNR_DL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU_I01_DEV-TPLNR_DL.
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_MU_I01_DEV_STR, 
FLAG_ORDER TYPE STRING,
AUFNR TYPE STRING,
QMNUM TYPE STRING,
EQUNR TYPE STRING,
GERAET TYPE STRING,
MATNR TYPE STRING,
TPLNR_DL TYPE STRING,
SPARTE TYPE STRING,
BAUFORM TYPE STRING,
DISCSTATE TYPE STRING,
BGLJAHR TYPE STRING,
BGLBIS TYPE STRING,
TURNUSJ TYPE STRING,
EINBDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWM_MU_I01_DEV_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_MU_I01_DEV_STR-FLAG_ORDER sy-vline 
WA_EWM_MU_I01_DEV_STR-AUFNR sy-vline 
WA_EWM_MU_I01_DEV_STR-QMNUM sy-vline 
WA_EWM_MU_I01_DEV_STR-EQUNR sy-vline 
WA_EWM_MU_I01_DEV_STR-GERAET sy-vline 
WA_EWM_MU_I01_DEV_STR-MATNR sy-vline 
WA_EWM_MU_I01_DEV_STR-TPLNR_DL sy-vline 
WA_EWM_MU_I01_DEV_STR-SPARTE sy-vline 
WA_EWM_MU_I01_DEV_STR-BAUFORM sy-vline 
WA_EWM_MU_I01_DEV_STR-DISCSTATE sy-vline 
WA_EWM_MU_I01_DEV_STR-BGLJAHR sy-vline 
WA_EWM_MU_I01_DEV_STR-BGLBIS sy-vline 
WA_EWM_MU_I01_DEV_STR-TURNUSJ sy-vline 
WA_EWM_MU_I01_DEV_STR-EINBDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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