ABAP Select data from SAP table OI0_PRCD_APP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OI0_PRCD_APP 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 OI0_PRCD_APP. 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 OI0_PRCD_APP 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_OI0_PRCD_APP TYPE STANDARD TABLE OF OI0_PRCD_APP,
      WA_OI0_PRCD_APP TYPE OI0_PRCD_APP,
      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: <OI0_PRCD_APP> TYPE OI0_PRCD_APP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OI0_PRCD_APP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OI0_PRCD_APP
  INTO TABLE IT_OI0_PRCD_APP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OI0_PRCD_APP
*  INTO TABLE @DATA(IT_OI0_PRCD_APP2).
*--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_OI0_PRCD_APP INDEX 1 INTO DATA(WA_OI0_PRCD_APP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OI0_PRCD_APP ASSIGNING <OI0_PRCD_APP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OI0_PRCD_APP>-OIKOSTL = 1.
<OI0_PRCD_APP>-OIACPOL = 1.
<OI0_PRCD_APP>-OIFEEMAN = 1.
<OI0_PRCD_APP>-OIKWERT = 1.
<OI0_PRCD_APP>-OIFEEPRT = 1.

ENDLOOP.

LOOP AT IT_OI0_PRCD_APP INTO WA_OI0_PRCD_APP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OI0_PRCD_APP-OIGRNET, sy-vline,
  WA_OI0_PRCD_APP-OIGNSTRA, sy-vline,
  WA_OI0_PRCD_APP-OIGRCHK, sy-vline,
  WA_OI0_PRCD_APP-OIINVCYC, sy-vline,
  WA_OI0_PRCD_APP-OIINVCYACT, sy-vline,
  WA_OI0_PRCD_APP-OIINCYST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OI0_PRCD_APP 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_OI0_PRCD_APP 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_OI0_PRCD_APP INTO WA_OI0_PRCD_APP.


*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 OIKOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0_PRCD_APP-OIKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0_PRCD_APP-OIKOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OILICIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OI0_PRCD_APP-OILICIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OI0_PRCD_APP-OILICIN.
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_OI0_PRCD_APP_STR, 
OIKOSTL TYPE STRING,
OIACPOL TYPE STRING,
OIFEEMAN TYPE STRING,
OIKWERT TYPE STRING,
OIFEEPRT TYPE STRING,
OIGRNET TYPE STRING,
OIGNSTRA TYPE STRING,
OIGRCHK TYPE STRING,
OIINVCYC TYPE STRING,
OIINVCYACT TYPE STRING,
OIINCYST TYPE STRING,
OIA_SPLTIV TYPE STRING,
OIA_ZTERM TYPE STRING,
OILICIN TYPE STRING,
OILICTP TYPE STRING,
OIREPORT TYPE STRING,
OIDATA TYPE STRING,
OIHEAD TYPE STRING,
OIITEM TYPE STRING,
OIERRHAN TYPE STRING,
OIU_EP TYPE STRING,
OIRCONDCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OI0_PRCD_APP_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_OI0_PRCD_APP_STR-OIKOSTL sy-vline 
WA_OI0_PRCD_APP_STR-OIACPOL sy-vline 
WA_OI0_PRCD_APP_STR-OIFEEMAN sy-vline 
WA_OI0_PRCD_APP_STR-OIKWERT sy-vline 
WA_OI0_PRCD_APP_STR-OIFEEPRT sy-vline 
WA_OI0_PRCD_APP_STR-OIGRNET sy-vline 
WA_OI0_PRCD_APP_STR-OIGNSTRA sy-vline 
WA_OI0_PRCD_APP_STR-OIGRCHK sy-vline 
WA_OI0_PRCD_APP_STR-OIINVCYC sy-vline 
WA_OI0_PRCD_APP_STR-OIINVCYACT sy-vline 
WA_OI0_PRCD_APP_STR-OIINCYST sy-vline 
WA_OI0_PRCD_APP_STR-OIA_SPLTIV sy-vline 
WA_OI0_PRCD_APP_STR-OIA_ZTERM sy-vline 
WA_OI0_PRCD_APP_STR-OILICIN sy-vline 
WA_OI0_PRCD_APP_STR-OILICTP sy-vline 
WA_OI0_PRCD_APP_STR-OIREPORT sy-vline 
WA_OI0_PRCD_APP_STR-OIDATA sy-vline 
WA_OI0_PRCD_APP_STR-OIHEAD sy-vline 
WA_OI0_PRCD_APP_STR-OIITEM sy-vline 
WA_OI0_PRCD_APP_STR-OIERRHAN sy-vline 
WA_OI0_PRCD_APP_STR-OIU_EP sy-vline 
WA_OI0_PRCD_APP_STR-OIRCONDCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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