ABAP Select data from SAP table PRU_0290_SCREEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PRU_0290_SCREEN 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 PRU_0290_SCREEN. 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 PRU_0290_SCREEN 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_PRU_0290_SCREEN TYPE STANDARD TABLE OF PRU_0290_SCREEN,
      WA_PRU_0290_SCREEN TYPE PRU_0290_SCREEN,
      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: <PRU_0290_SCREEN> TYPE PRU_0290_SCREEN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PRU_0290_SCREEN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PRU_0290_SCREEN
  INTO TABLE IT_PRU_0290_SCREEN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRU_0290_SCREEN
*  INTO TABLE @DATA(IT_PRU_0290_SCREEN2).
*--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_PRU_0290_SCREEN INDEX 1 INTO DATA(WA_PRU_0290_SCREEN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PRU_0290_SCREEN ASSIGNING <PRU_0290_SCREEN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRU_0290_SCREEN>-GESC1 = 1.
<PRU_0290_SCREEN>-GESC2 = 1.
<PRU_0290_SCREEN>-SBPD1 = 1.
<PRU_0290_SCREEN>-SBPD2 = 1.
<PRU_0290_SCREEN>-ICCD1 = 1.

ENDLOOP.

LOOP AT IT_PRU_0290_SCREEN INTO WA_PRU_0290_SCREEN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRU_0290_SCREEN-ICCD2, sy-vline,
  WA_PRU_0290_SCREEN-ICCD3, sy-vline,
  WA_PRU_0290_SCREEN-ICCD4, sy-vline,
  WA_PRU_0290_SCREEN-ICNUM, sy-vline,
  WA_PRU_0290_SCREEN-INN, sy-vline,
  WA_PRU_0290_SCREEN-AWACN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRU_0290_SCREEN 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_PRU_0290_SCREEN 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_PRU_0290_SCREEN INTO WA_PRU_0290_SCREEN.


*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_PRU_0290_SCREEN_STR, 
GESC1 TYPE STRING,
GESC2 TYPE STRING,
SBPD1 TYPE STRING,
SBPD2 TYPE STRING,
ICCD1 TYPE STRING,
ICCD2 TYPE STRING,
ICCD3 TYPE STRING,
ICCD4 TYPE STRING,
ICNUM TYPE STRING,
INN TYPE STRING,
AWACN TYPE STRING,
AWARS TYPE STRING,
AWADC TYPE STRING,
AGTXT TYPE STRING,
AWTXT TYPE STRING,
AWDOC TYPE STRING,
WPASSL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRU_0290_SCREEN_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_PRU_0290_SCREEN_STR-GESC1 sy-vline 
WA_PRU_0290_SCREEN_STR-GESC2 sy-vline 
WA_PRU_0290_SCREEN_STR-SBPD1 sy-vline 
WA_PRU_0290_SCREEN_STR-SBPD2 sy-vline 
WA_PRU_0290_SCREEN_STR-ICCD1 sy-vline 
WA_PRU_0290_SCREEN_STR-ICCD2 sy-vline 
WA_PRU_0290_SCREEN_STR-ICCD3 sy-vline 
WA_PRU_0290_SCREEN_STR-ICCD4 sy-vline 
WA_PRU_0290_SCREEN_STR-ICNUM sy-vline 
WA_PRU_0290_SCREEN_STR-INN sy-vline 
WA_PRU_0290_SCREEN_STR-AWACN sy-vline 
WA_PRU_0290_SCREEN_STR-AWARS sy-vline 
WA_PRU_0290_SCREEN_STR-AWADC sy-vline 
WA_PRU_0290_SCREEN_STR-AGTXT sy-vline 
WA_PRU_0290_SCREEN_STR-AWTXT sy-vline 
WA_PRU_0290_SCREEN_STR-AWDOC sy-vline 
WA_PRU_0290_SCREEN_STR-WPASSL sy-vline      INTO ld_text SEPARATED BY SPACE.

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