ABAP Select data from SAP table /OLC/PMCOEA_OP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /OLC/PMCOEA_OP
*  INTO TABLE @DATA(IT_/OLC/PMCOEA_OP2).
*--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_/OLC/PMCOEA_OP INDEX 1 INTO DATA(WA_/OLC/PMCOEA_OP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</OLC/PMCOEA_OP>-VORNR = 1.
</OLC/PMCOEA_OP>-OBJWAER = 1.
</OLC/PMCOEA_OP>-KRKWAER = 1.
</OLC/PMCOEA_OP>-ANLWAER = 1.
</OLC/PMCOEA_OP>-OWAERD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/OLC/PMCOEA_OP-KWAERD, sy-vline,
  WA_/OLC/PMCOEA_OP-AWAERD, sy-vline,
  WA_/OLC/PMCOEA_OP-ORDERCOSTS, sy-vline,
  WA_/OLC/PMCOEA_OP-ORDERWAERS, sy-vline,
  WA_/OLC/PMCOEA_OP-IGESAMT, sy-vline,
  WA_/OLC/PMCOEA_OP-PGESAMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/OLC/PMCOEA_OP 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_/OLC/PMCOEA_OP 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_/OLC/PMCOEA_OP INTO WA_/OLC/PMCOEA_OP.


*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 VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/OLC/PMCOEA_OP-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OLC/PMCOEA_OP-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/OLC/PMCOEA_OP-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/OLC/PMCOEA_OP-MEINH.
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_/OLC/PMCOEA_OP_STR, 
VORNR TYPE STRING,
OBJWAER TYPE STRING,
KRKWAER TYPE STRING,
ANLWAER TYPE STRING,
OWAERD TYPE STRING,
KWAERD TYPE STRING,
AWAERD TYPE STRING,
ORDERCOSTS TYPE STRING,
ORDERWAERS TYPE STRING,
IGESAMT TYPE STRING,
PGESAMT TYPE STRING,
SGESAMT TYPE STRING,
IKOSTEN TYPE STRING,
PKOSTEN TYPE STRING,
SKOSTEN TYPE STRING,
IERTRAG TYPE STRING,
PERTRAG TYPE STRING,
SERTRAG TYPE STRING,
SELKNZ TYPE STRING,
ACPOS TYPE STRING,
KAGTX TYPE STRING,
IKOSTENKGR TYPE STRING,
PKOSTENKGR TYPE STRING,
SKOSTENKGR TYPE STRING,
IERTRAGKGR TYPE STRING,
PERTRAGKGR TYPE STRING,
SERTRAGKGR TYPE STRING,
PRFKNZ TYPE STRING,
LISKNZ TYPE STRING,
KENNZ TYPE STRING,
KNZTX TYPE STRING,
KENWRTGES TYPE STRING,
KENWRTKGR TYPE STRING,
DISP_WAERS TYPE STRING,
BEMOT TYPE STRING,
BMTTX TYPE STRING,
IMENGEN TYPE STRING,
PMENGEN TYPE STRING,
SMENGEN TYPE STRING,
MEINH TYPE STRING,
IMENGEKGR TYPE STRING,
PMENGEKGR TYPE STRING,
SMENGEKGR TYPE STRING,
IBETRAGKGR TYPE STRING,
PBETRAGKGR TYPE STRING,
SBETRAGKGR TYPE STRING,
IKOSTEN_OP TYPE STRING,
PKOSTEN_OP TYPE STRING,
SKOSTEN_OP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/OLC/PMCOEA_OP_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_/OLC/PMCOEA_OP_STR-VORNR sy-vline 
WA_/OLC/PMCOEA_OP_STR-OBJWAER sy-vline 
WA_/OLC/PMCOEA_OP_STR-KRKWAER sy-vline 
WA_/OLC/PMCOEA_OP_STR-ANLWAER sy-vline 
WA_/OLC/PMCOEA_OP_STR-OWAERD sy-vline 
WA_/OLC/PMCOEA_OP_STR-KWAERD sy-vline 
WA_/OLC/PMCOEA_OP_STR-AWAERD sy-vline 
WA_/OLC/PMCOEA_OP_STR-ORDERCOSTS sy-vline 
WA_/OLC/PMCOEA_OP_STR-ORDERWAERS sy-vline 
WA_/OLC/PMCOEA_OP_STR-IGESAMT sy-vline 
WA_/OLC/PMCOEA_OP_STR-PGESAMT sy-vline 
WA_/OLC/PMCOEA_OP_STR-SGESAMT sy-vline 
WA_/OLC/PMCOEA_OP_STR-IKOSTEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-PKOSTEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-SKOSTEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-IERTRAG sy-vline 
WA_/OLC/PMCOEA_OP_STR-PERTRAG sy-vline 
WA_/OLC/PMCOEA_OP_STR-SERTRAG sy-vline 
WA_/OLC/PMCOEA_OP_STR-SELKNZ sy-vline 
WA_/OLC/PMCOEA_OP_STR-ACPOS sy-vline 
WA_/OLC/PMCOEA_OP_STR-KAGTX sy-vline 
WA_/OLC/PMCOEA_OP_STR-IKOSTENKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-PKOSTENKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-SKOSTENKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-IERTRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-PERTRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-SERTRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-PRFKNZ sy-vline 
WA_/OLC/PMCOEA_OP_STR-LISKNZ sy-vline 
WA_/OLC/PMCOEA_OP_STR-KENNZ sy-vline 
WA_/OLC/PMCOEA_OP_STR-KNZTX sy-vline 
WA_/OLC/PMCOEA_OP_STR-KENWRTGES sy-vline 
WA_/OLC/PMCOEA_OP_STR-KENWRTKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-DISP_WAERS sy-vline 
WA_/OLC/PMCOEA_OP_STR-BEMOT sy-vline 
WA_/OLC/PMCOEA_OP_STR-BMTTX sy-vline 
WA_/OLC/PMCOEA_OP_STR-IMENGEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-PMENGEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-SMENGEN sy-vline 
WA_/OLC/PMCOEA_OP_STR-MEINH sy-vline 
WA_/OLC/PMCOEA_OP_STR-IMENGEKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-PMENGEKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-SMENGEKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-IBETRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-PBETRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-SBETRAGKGR sy-vline 
WA_/OLC/PMCOEA_OP_STR-IKOSTEN_OP sy-vline 
WA_/OLC/PMCOEA_OP_STR-PKOSTEN_OP sy-vline 
WA_/OLC/PMCOEA_OP_STR-SKOSTEN_OP sy-vline      INTO ld_text SEPARATED BY SPACE.

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