ABAP Select data from SAP table MMIM_MATERIAL_PLANTS_HELP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMIM_MATERIAL_PLANTS_HELP
*  INTO TABLE @DATA(IT_MMIM_MATERIAL_PLANTS_HELP2).
*--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_MMIM_MATERIAL_PLANTS_HELP INDEX 1 INTO DATA(WA_MMIM_MATERIAL_PLANTS_HELP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMIM_MATERIAL_PLANTS_HELP>-MATNR = 1.
<MMIM_MATERIAL_PLANTS_HELP>-WERKS = 1.
<MMIM_MATERIAL_PLANTS_HELP>-WERKS_NAME = 1.
<MMIM_MATERIAL_PLANTS_HELP>-LGORT = 1.
<MMIM_MATERIAL_PLANTS_HELP>-LGOBE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMIM_MATERIAL_PLANTS_HELP-TARG_DATE, sy-vline,
  WA_MMIM_MATERIAL_PLANTS_HELP-LABST, sy-vline,
  WA_MMIM_MATERIAL_PLANTS_HELP-INSME, sy-vline,
  WA_MMIM_MATERIAL_PLANTS_HELP-RETME, sy-vline,
  WA_MMIM_MATERIAL_PLANTS_HELP-UMLME, sy-vline,
  WA_MMIM_MATERIAL_PLANTS_HELP-UMLMC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMIM_MATERIAL_PLANTS_HELP 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_MMIM_MATERIAL_PLANTS_HELP 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_MMIM_MATERIAL_PLANTS_HELP INTO WA_MMIM_MATERIAL_PLANTS_HELP.


*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_MMIM_MATERIAL_PLANTS_HELP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIM_MATERIAL_PLANTS_HELP-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMIM_MATERIAL_PLANTS_HELP-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIM_MATERIAL_PLANTS_HELP-MEINS.
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_MMIM_MATERIAL_PLANTS_HELP_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
WERKS_NAME TYPE STRING,
LGORT TYPE STRING,
LGOBE TYPE STRING,
TARG_DATE TYPE STRING,
LABST TYPE STRING,
INSME TYPE STRING,
RETME TYPE STRING,
UMLME TYPE STRING,
UMLMC TYPE STRING,
TRAME TYPE STRING,
SPEME TYPE STRING,
EINME TYPE STRING,
GLGMG TYPE STRING,
BWESB TYPE STRING,
MEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMIM_MATERIAL_PLANTS_HELP_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_MMIM_MATERIAL_PLANTS_HELP_STR-MATNR sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-WERKS sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-WERKS_NAME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-LGORT sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-LGOBE sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-TARG_DATE sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-LABST sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-INSME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-RETME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-UMLME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-UMLMC sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-TRAME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-SPEME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-EINME sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-GLGMG sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-BWESB sy-vline 
WA_MMIM_MATERIAL_PLANTS_HELP_STR-MEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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