ABAP Select data from SAP table MPE_ST_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPE_ST_D
*  INTO TABLE @DATA(IT_MPE_ST_D2).
*--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_MPE_ST_D INDEX 1 INTO DATA(WA_MPE_ST_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPE_ST_D>-MANDT = 1.
<MPE_ST_D>-DRAFTUUID = 1.
<MPE_ST_D>-MFGSTANDARDTEXT = 1.
<MPE_ST_D>-MFGSTANDARDTEXTFOREDIT = 1.
<MPE_ST_D>-MFGSTANDARDTEXTCATEGORYUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPE_ST_D-MFGSTANDARDTEXTCATEGORY, sy-vline,
  WA_MPE_ST_D-MFGSTANDARDTEXTUSAGETYPE, sy-vline,
  WA_MPE_ST_D-MFGSTANDARDTEXTREFERENCETYPE, sy-vline,
  WA_MPE_ST_D-MFGSTANDARDTEXTSTATUS, sy-vline,
  WA_MPE_ST_D-PLANT, sy-vline,
  WA_MPE_ST_D-MFGSTANDARDTEXTDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPE_ST_D 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_MPE_ST_D 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_MPE_ST_D INTO WA_MPE_ST_D.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MPE_ST_D_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
MFGSTANDARDTEXT TYPE STRING,
MFGSTANDARDTEXTFOREDIT TYPE STRING,
MFGSTANDARDTEXTCATEGORYUUID TYPE STRING,
MFGSTANDARDTEXTCATEGORY TYPE STRING,
MFGSTANDARDTEXTUSAGETYPE TYPE STRING,
MFGSTANDARDTEXTREFERENCETYPE TYPE STRING,
MFGSTANDARDTEXTSTATUS TYPE STRING,
PLANT TYPE STRING,
MFGSTANDARDTEXTDESCRIPTION TYPE STRING,
CREATIONTIME TYPE STRING,
CREATIONUSERNAME TYPE STRING,
CREATEDBYUSERDESCRIPTION TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDBYUSERDESCRIPTION TYPE STRING,
MFGSTANDARDTEXTLATESTVERSION TYPE STRING,
MFGSTANDARDTEXTVERSION TYPE STRING,
MFGSTANDARDTEXTVERSIONSTATUS TYPE STRING,
MFGSTDTEXTVERSIONSTATUSCRITLTY TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPE_ST_D_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_MPE_ST_D_STR-MANDT sy-vline 
WA_MPE_ST_D_STR-DRAFTUUID sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXT sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTFOREDIT sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTCATEGORYUUID sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTCATEGORY sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTUSAGETYPE sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTREFERENCETYPE sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTSTATUS sy-vline 
WA_MPE_ST_D_STR-PLANT sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTDESCRIPTION sy-vline 
WA_MPE_ST_D_STR-CREATIONTIME sy-vline 
WA_MPE_ST_D_STR-CREATIONUSERNAME sy-vline 
WA_MPE_ST_D_STR-CREATEDBYUSERDESCRIPTION sy-vline 
WA_MPE_ST_D_STR-LASTCHANGEDATETIME sy-vline 
WA_MPE_ST_D_STR-LASTCHANGEDBYUSER sy-vline 
WA_MPE_ST_D_STR-LASTCHANGEDBYUSERDESCRIPTION sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTLATESTVERSION sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTVERSION sy-vline 
WA_MPE_ST_D_STR-MFGSTANDARDTEXTVERSIONSTATUS sy-vline 
WA_MPE_ST_D_STR-MFGSTDTEXTVERSIONSTATUSCRITLTY sy-vline 
WA_MPE_ST_D_STR-HASACTIVEENTITY sy-vline 
WA_MPE_ST_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_MPE_ST_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_MPE_ST_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_MPE_ST_D_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_MPE_ST_D_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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