ABAP Select data from SAP table MPE_PLAN_MFG_ALT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MPE_PLAN_MFG_ALT 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_PLAN_MFG_ALT. 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_PLAN_MFG_ALT 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_PLAN_MFG_ALT TYPE STANDARD TABLE OF MPE_PLAN_MFG_ALT,
      WA_MPE_PLAN_MFG_ALT TYPE MPE_PLAN_MFG_ALT,
      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_PLAN_MFG_ALT> TYPE MPE_PLAN_MFG_ALT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPE_PLAN_MFG_ALT
*  INTO TABLE @DATA(IT_MPE_PLAN_MFG_ALT2).
*--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_PLAN_MFG_ALT INDEX 1 INTO DATA(WA_MPE_PLAN_MFG_ALT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPE_PLAN_MFG_ALT>-MANDT = 1.
<MPE_PLAN_MFG_ALT>-SRCE_STLTY = 1.
<MPE_PLAN_MFG_ALT>-SRCE_STLAN = 1.
<MPE_PLAN_MFG_ALT>-SRCE_STLNR = 1.
<MPE_PLAN_MFG_ALT>-SRCE_STLAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPE_PLAN_MFG_ALT-SRCE_STVKN_VERSN, sy-vline,
  WA_MPE_PLAN_MFG_ALT-TGT_STLTY, sy-vline,
  WA_MPE_PLAN_MFG_ALT-TGT_STLAN, sy-vline,
  WA_MPE_PLAN_MFG_ALT-TGT_STLNR, sy-vline,
  WA_MPE_PLAN_MFG_ALT-TGT_STLAL, sy-vline,
  WA_MPE_PLAN_MFG_ALT-TGT_STVKN_VERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPE_PLAN_MFG_ALT 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_PLAN_MFG_ALT 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_PLAN_MFG_ALT INTO WA_MPE_PLAN_MFG_ALT.


*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 NUMCV, internal->external for field SRCE_STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPE_PLAN_MFG_ALT-SRCE_STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPE_PLAN_MFG_ALT-SRCE_STLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field TGT_STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPE_PLAN_MFG_ALT-TGT_STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPE_PLAN_MFG_ALT-TGT_STLNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field TGT_OLD_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPE_PLAN_MFG_ALT-TGT_OLD_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPE_PLAN_MFG_ALT-TGT_OLD_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TGT_NEW_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPE_PLAN_MFG_ALT-TGT_NEW_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPE_PLAN_MFG_ALT-TGT_NEW_UOM.
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_MPE_PLAN_MFG_ALT_STR, 
MANDT TYPE STRING,
SRCE_STLTY TYPE STRING,
SRCE_STLAN TYPE STRING,
SRCE_STLNR TYPE STRING,
SRCE_STLAL TYPE STRING,
SRCE_STVKN_VERSN TYPE STRING,
TGT_STLTY TYPE STRING,
TGT_STLAN TYPE STRING,
TGT_STLNR TYPE STRING,
TGT_STLAL TYPE STRING,
TGT_STVKN_VERSN TYPE STRING,
SRCE_MATERIAL TYPE STRING,
TGT_OLD_MATERIAL TYPE STRING,
TGT_NEW_MATERIAL TYPE STRING,
TGT_OLD_QTY TYPE STRING,
TGT_NEW_QTY TYPE STRING,
TGT_OLD_UOM TYPE STRING,
TGT_NEW_UOM TYPE STRING,
CREATED_DATE TYPE STRING,
CREATED_USER TYPE STRING,
CHANGED_DATE TYPE STRING,
CHANGED_USER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPE_PLAN_MFG_ALT_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_PLAN_MFG_ALT_STR-MANDT sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_STLTY sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_STLAN sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_STLNR sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_STLAL sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_STVKN_VERSN sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_STLTY sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_STLAN sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_STLNR sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_STLAL sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_STVKN_VERSN sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-SRCE_MATERIAL sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_OLD_MATERIAL sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_NEW_MATERIAL sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_OLD_QTY sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_NEW_QTY sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_OLD_UOM sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-TGT_NEW_UOM sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-CREATED_DATE sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-CREATED_USER sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-CHANGED_DATE sy-vline 
WA_MPE_PLAN_MFG_ALT_STR-CHANGED_USER sy-vline      INTO ld_text SEPARATED BY SPACE.

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