ABAP Select data from SAP table CPEV_PSM_OTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPEV_PSM_OTYPE
*  INTO TABLE @DATA(IT_CPEV_PSM_OTYPE2).
*--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_CPEV_PSM_OTYPE INDEX 1 INTO DATA(WA_CPEV_PSM_OTYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPEV_PSM_OTYPE>-CLIENT = 1.
<CPEV_PSM_OTYPE>-PSMETHOD = 1.
<CPEV_PSM_OTYPE>-METHODTEXT = 1.
<CPEV_PSM_OTYPE>-PSMSTATUS = 1.
<CPEV_PSM_OTYPE>-STATUSTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPEV_PSM_OTYPE-ORDERTYPE, sy-vline,
  WA_CPEV_PSM_OTYPE-ORDERCATEGORY, sy-vline,
  WA_CPEV_PSM_OTYPE-ORDERTYPEDESC, sy-vline,
  WA_CPEV_PSM_OTYPE-ORDEREXPIRATIONINST, sy-vline,
  WA_CPEV_PSM_OTYPE-ORDERPRICINGEXECINST, sy-vline,
  WA_CPEV_PSM_OTYPE-ORDEREXCHANGETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPEV_PSM_OTYPE 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_CPEV_PSM_OTYPE 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_CPEV_PSM_OTYPE INTO WA_CPEV_PSM_OTYPE.


*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_CPEV_PSM_OTYPE_STR, 
CLIENT TYPE STRING,
PSMETHOD TYPE STRING,
METHODTEXT TYPE STRING,
PSMSTATUS TYPE STRING,
STATUSTEXT TYPE STRING,
ORDERTYPE TYPE STRING,
ORDERCATEGORY TYPE STRING,
ORDERTYPEDESC TYPE STRING,
ORDEREXPIRATIONINST TYPE STRING,
ORDERPRICINGEXECINST TYPE STRING,
ORDEREXCHANGETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPEV_PSM_OTYPE_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_CPEV_PSM_OTYPE_STR-CLIENT sy-vline 
WA_CPEV_PSM_OTYPE_STR-PSMETHOD sy-vline 
WA_CPEV_PSM_OTYPE_STR-METHODTEXT sy-vline 
WA_CPEV_PSM_OTYPE_STR-PSMSTATUS sy-vline 
WA_CPEV_PSM_OTYPE_STR-STATUSTEXT sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDERTYPE sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDERCATEGORY sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDERTYPEDESC sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDEREXPIRATIONINST sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDERPRICINGEXECINST sy-vline 
WA_CPEV_PSM_OTYPE_STR-ORDEREXCHANGETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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