ABAP Select data from SAP table /MERP/PP_PO_OPER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MERP/PP_PO_OPER 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 /MERP/PP_PO_OPER. 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 /MERP/PP_PO_OPER 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_/MERP/PP_PO_OPER TYPE STANDARD TABLE OF /MERP/PP_PO_OPER,
      WA_/MERP/PP_PO_OPER TYPE /MERP/PP_PO_OPER,
      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: </MERP/PP_PO_OPER> TYPE /MERP/PP_PO_OPER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MERP/PP_PO_OPER
*  INTO TABLE @DATA(IT_/MERP/PP_PO_OPER2).
*--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_/MERP/PP_PO_OPER INDEX 1 INTO DATA(WA_/MERP/PP_PO_OPER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MERP/PP_PO_OPER>-MANDT = 1.
</MERP/PP_PO_OPER>-ORDERINTERNALID = 1.
</MERP/PP_PO_OPER>-ORDEROPERATIONINTERNALID = 1.
</MERP/PP_PO_OPER>-SEQUENCE = 1.
</MERP/PP_PO_OPER>-OPERATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MERP/PP_PO_OPER-ORDERID, sy-vline,
  WA_/MERP/PP_PO_OPER-WORKCENTERINTERNALID, sy-vline,
  WA_/MERP/PP_PO_OPER-WORKCENTERTYPECODE, sy-vline,
  WA_/MERP/PP_PO_OPER-PLANT, sy-vline,
  WA_/MERP/PP_PO_OPER-OBJECTINTERNALID, sy-vline,
  WA_/MERP/PP_PO_OPER-OPERATIONTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MERP/PP_PO_OPER 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_/MERP/PP_PO_OPER 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_/MERP/PP_PO_OPER INTO WA_/MERP/PP_PO_OPER.


*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 SEQUENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_OPER-SEQUENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_OPER-SEQUENCE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_OPER-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_OPER-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OPERATIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_OPER-OPERATIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_OPER-OPERATIONUNIT.
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_/MERP/PP_PO_OPER_STR, 
MANDT TYPE STRING,
ORDERINTERNALID TYPE STRING,
ORDEROPERATIONINTERNALID TYPE STRING,
SEQUENCE TYPE STRING,
OPERATION TYPE STRING,
ORDERID TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
PLANT TYPE STRING,
OBJECTINTERNALID TYPE STRING,
OPERATIONTEXT TYPE STRING,
LANGUAGE TYPE STRING,
OPERATIONUNIT TYPE STRING,
OPPLANNEDTOTALQUANTITY TYPE STRING,
OPTOTALCONFIRMEDYIELDQTY TYPE STRING,
OPLTSTSCHEDLDEXECSTRTDTE TYPE STRING,
OPLTSTSCHEDLDEXECSTRTTME TYPE STRING,
OPLTSTSCHEDLDEXECENDDTE TYPE STRING,
OPLTSTSCHEDLDEXECENDTME TYPE STRING,
OPACTUALEXECUTIONSTARTDATE TYPE STRING,
OPACTUALEXECUTIONSTARTTIME TYPE STRING,
OPACTUALEXECUTIONENDDATE TYPE STRING,
OPACTUALEXECUTIONENDTIME TYPE STRING,
ACTUALOPERATIONSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MERP/PP_PO_OPER_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_/MERP/PP_PO_OPER_STR-MANDT sy-vline 
WA_/MERP/PP_PO_OPER_STR-ORDERINTERNALID sy-vline 
WA_/MERP/PP_PO_OPER_STR-ORDEROPERATIONINTERNALID sy-vline 
WA_/MERP/PP_PO_OPER_STR-SEQUENCE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPERATION sy-vline 
WA_/MERP/PP_PO_OPER_STR-ORDERID sy-vline 
WA_/MERP/PP_PO_OPER_STR-WORKCENTERINTERNALID sy-vline 
WA_/MERP/PP_PO_OPER_STR-WORKCENTERTYPECODE sy-vline 
WA_/MERP/PP_PO_OPER_STR-PLANT sy-vline 
WA_/MERP/PP_PO_OPER_STR-OBJECTINTERNALID sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPERATIONTEXT sy-vline 
WA_/MERP/PP_PO_OPER_STR-LANGUAGE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPERATIONUNIT sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPPLANNEDTOTALQUANTITY sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPTOTALCONFIRMEDYIELDQTY sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPLTSTSCHEDLDEXECSTRTDTE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPLTSTSCHEDLDEXECSTRTTME sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPLTSTSCHEDLDEXECENDDTE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPLTSTSCHEDLDEXECENDTME sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPACTUALEXECUTIONSTARTDATE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPACTUALEXECUTIONSTARTTIME sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPACTUALEXECUTIONENDDATE sy-vline 
WA_/MERP/PP_PO_OPER_STR-OPACTUALEXECUTIONENDTIME sy-vline 
WA_/MERP/PP_PO_OPER_STR-ACTUALOPERATIONSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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