ABAP Select data from SAP table /SMERP/MM_IMLEVELSTOCK_STR 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 /SMERP/MM_IMLEVELSTOCK_STR 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 /SMERP/MM_IMLEVELSTOCK_STR. 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 /SMERP/MM_IMLEVELSTOCK_STR 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_/SMERP/MM_IMLEVELSTOCK_STR TYPE STANDARD TABLE OF /SMERP/MM_IMLEVELSTOCK_STR,
      WA_/SMERP/MM_IMLEVELSTOCK_STR TYPE /SMERP/MM_IMLEVELSTOCK_STR,
      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: </SMERP/MM_IMLEVELSTOCK_STR> TYPE /SMERP/MM_IMLEVELSTOCK_STR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SMERP/MM_IMLEVELSTOCK_STR
  INTO TABLE IT_/SMERP/MM_IMLEVELSTOCK_STR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SMERP/MM_IMLEVELSTOCK_STR
*  INTO TABLE @DATA(IT_/SMERP/MM_IMLEVELSTOCK_STR2).
*--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_/SMERP/MM_IMLEVELSTOCK_STR INDEX 1 INTO DATA(WA_/SMERP/MM_IMLEVELSTOCK_STR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SMERP/MM_IMLEVELSTOCK_STR ASSIGNING </SMERP/MM_IMLEVELSTOCK_STR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SMERP/MM_IMLEVELSTOCK_STR>-MATNR = 1.
</SMERP/MM_IMLEVELSTOCK_STR>-WERKS = 1.
</SMERP/MM_IMLEVELSTOCK_STR>-LGORT = 1.
</SMERP/MM_IMLEVELSTOCK_STR>-CHARG = 1.
</SMERP/MM_IMLEVELSTOCK_STR>-KZBUK = 1.

ENDLOOP.

LOOP AT IT_/SMERP/MM_IMLEVELSTOCK_STR INTO WA_/SMERP/MM_IMLEVELSTOCK_STR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SMERP/MM_IMLEVELSTOCK_STR-KZWER, sy-vline,
  WA_/SMERP/MM_IMLEVELSTOCK_STR-KZLGO, sy-vline,
  WA_/SMERP/MM_IMLEVELSTOCK_STR-KZCHA, sy-vline,
  WA_/SMERP/MM_IMLEVELSTOCK_STR-KZSON, sy-vline,
  WA_/SMERP/MM_IMLEVELSTOCK_STR-LABST, sy-vline,
  WA_/SMERP/MM_IMLEVELSTOCK_STR-INSME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SMERP/MM_IMLEVELSTOCK_STR 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_/SMERP/MM_IMLEVELSTOCK_STR 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_/SMERP/MM_IMLEVELSTOCK_STR INTO WA_/SMERP/MM_IMLEVELSTOCK_STR.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SMERP/MM_IMLEVELSTOCK_STR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SMERP/MM_IMLEVELSTOCK_STR-MATNR.
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_/SMERP/MM_IMLEVELSTOCK_STR_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
KZBUK TYPE STRING,
KZWER TYPE STRING,
KZLGO TYPE STRING,
KZCHA TYPE STRING,
KZSON TYPE STRING,
LABST TYPE STRING,
INSME TYPE STRING,
SPEME TYPE STRING,
EINME TYPE STRING,
RETME TYPE STRING,
UMLMC TYPE STRING,
UMLME TYPE STRING,
TRAME TYPE STRING,
KLABS TYPE STRING,
KINSM TYPE STRING,
KEINM TYPE STRING,
KSPEM TYPE STRING,
MENGK TYPE STRING,
MENGE TYPE STRING,
BDMNG TYPE STRING,
BDMNS TYPE STRING,
OMENG TYPE STRING,
FAMNG TYPE STRING,
BSABR TYPE STRING,
TRASF TYPE STRING,
LMINB TYPE STRING,
LBSTF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SMERP/MM_IMLEVELSTOCK_STR_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_/SMERP/MM_IMLEVELSTOCK_STR_STR-MATNR sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-WERKS sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-LGORT sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-CHARG sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KZBUK sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KZWER sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KZLGO sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KZCHA sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KZSON sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-LABST sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-INSME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-SPEME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-EINME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-RETME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-UMLMC sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-UMLME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-TRAME sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KLABS sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KINSM sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KEINM sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-KSPEM sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-MENGK sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-MENGE sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-BDMNG sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-BDMNS sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-OMENG sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-FAMNG sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-BSABR sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-TRASF sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-LMINB sy-vline 
WA_/SMERP/MM_IMLEVELSTOCK_STR_STR-LBSTF sy-vline      INTO ld_text SEPARATED BY SPACE.

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