ABAP Select data from SAP table MMPROCMTPROJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPROCMTPROJ
*  INTO TABLE @DATA(IT_MMPROCMTPROJ2).
*--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_MMPROCMTPROJ INDEX 1 INTO DATA(WA_MMPROCMTPROJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPROCMTPROJ>-MANDT = 1.
<MMPROCMTPROJ>-PROCUREMENTPROJECTUUID = 1.
<MMPROCMTPROJ>-PROCUREMENTPROJECT = 1.
<MMPROCMTPROJ>-PROCUREMENTPROJECTNAME = 1.
<MMPROCMTPROJ>-EXTERNALPROJECTREFERENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPROCMTPROJ-COMPANYCODE, sy-vline,
  WA_MMPROCMTPROJ-CREATEDBYUSER, sy-vline,
  WA_MMPROCMTPROJ-LASTCHANGEDBYUSER, sy-vline,
  WA_MMPROCMTPROJ-CREATIONDATETIME, sy-vline,
  WA_MMPROCMTPROJ-LASTCHANGEDATETIME, sy-vline,
  WA_MMPROCMTPROJ-PROCUREMENTPROJECTACTVTNSTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPROCMTPROJ 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_MMPROCMTPROJ 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_MMPROCMTPROJ INTO WA_MMPROCMTPROJ.


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

*Conversion exit ALPHA, internal->external for field EXTERNALPROJECTREFERENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPROCMTPROJ-EXTERNALPROJECTREFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPROCMTPROJ-EXTERNALPROJECTREFERENCE.
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_MMPROCMTPROJ_STR, 
MANDT TYPE STRING,
PROCUREMENTPROJECTUUID TYPE STRING,
PROCUREMENTPROJECT TYPE STRING,
PROCUREMENTPROJECTNAME TYPE STRING,
EXTERNALPROJECTREFERENCE TYPE STRING,
COMPANYCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PROCUREMENTPROJECTACTVTNSTS TYPE STRING,
PROCMTPLANNINGSUBPROJECTUUID TYPE STRING,
SOURCINGORIGIN TYPE STRING,
SOURCINGSCENARIO TYPE STRING,
ISEOPBLOCKED TYPE STRING,
DUMMY_PPROJ_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPROCMTPROJ_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_MMPROCMTPROJ_STR-MANDT sy-vline 
WA_MMPROCMTPROJ_STR-PROCUREMENTPROJECTUUID sy-vline 
WA_MMPROCMTPROJ_STR-PROCUREMENTPROJECT sy-vline 
WA_MMPROCMTPROJ_STR-PROCUREMENTPROJECTNAME sy-vline 
WA_MMPROCMTPROJ_STR-EXTERNALPROJECTREFERENCE sy-vline 
WA_MMPROCMTPROJ_STR-COMPANYCODE sy-vline 
WA_MMPROCMTPROJ_STR-CREATEDBYUSER sy-vline 
WA_MMPROCMTPROJ_STR-LASTCHANGEDBYUSER sy-vline 
WA_MMPROCMTPROJ_STR-CREATIONDATETIME sy-vline 
WA_MMPROCMTPROJ_STR-LASTCHANGEDATETIME sy-vline 
WA_MMPROCMTPROJ_STR-PROCUREMENTPROJECTACTVTNSTS sy-vline 
WA_MMPROCMTPROJ_STR-PROCMTPLANNINGSUBPROJECTUUID sy-vline 
WA_MMPROCMTPROJ_STR-SOURCINGORIGIN sy-vline 
WA_MMPROCMTPROJ_STR-SOURCINGSCENARIO sy-vline 
WA_MMPROCMTPROJ_STR-ISEOPBLOCKED sy-vline 
WA_MMPROCMTPROJ_STR-DUMMY_PPROJ_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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