ABAP Select data from SAP table T852U into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP T852U 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 T852U. 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 T852U 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_T852U TYPE STANDARD TABLE OF T852U,
      WA_T852U TYPE T852U,
      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: <T852U> TYPE T852U.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T852U.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T852U
  INTO TABLE IT_T852U.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T852U
*  INTO TABLE @DATA(IT_T852U2).
*--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_T852U INDEX 1 INTO DATA(WA_T852U2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T852U ASSIGNING <T852U>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T852U>-MANDT = 1.
<T852U>-RVERS = 1.
<T852U>-RYEAR = 1.
<T852U>-RSUBD = 1.
<T852U>-RCOMP = 1.

ENDLOOP.

LOOP AT IT_T852U INTO WA_T852U.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T852U-PERID, sy-vline,
  WA_T852U-PERCENT, sy-vline,
  WA_T852U-PCNT1, sy-vline,
  WA_T852U-PCNT2, sy-vline,
  WA_T852U-PCNT3, sy-vline,
  WA_T852U-PCNT4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T852U 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_T852U 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_T852U INTO WA_T852U.


*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 RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T852U-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T852U-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T852U-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T852U-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T852U-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T852U-RCOMP.
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_T852U_STR, 
MANDT TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RSUBD TYPE STRING,
RCOMP TYPE STRING,
PERID TYPE STRING,
PERCENT TYPE STRING,
PCNT1 TYPE STRING,
PCNT2 TYPE STRING,
PCNT3 TYPE STRING,
PCNT4 TYPE STRING,
PCNTD TYPE STRING,
KZNE TYPE STRING,
REASN TYPE STRING,
CTYPP TYPE STRING,
CTYPG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T852U_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_T852U_STR-MANDT sy-vline 
WA_T852U_STR-RVERS sy-vline 
WA_T852U_STR-RYEAR sy-vline 
WA_T852U_STR-RSUBD sy-vline 
WA_T852U_STR-RCOMP sy-vline 
WA_T852U_STR-PERID sy-vline 
WA_T852U_STR-PERCENT sy-vline 
WA_T852U_STR-PCNT1 sy-vline 
WA_T852U_STR-PCNT2 sy-vline 
WA_T852U_STR-PCNT3 sy-vline 
WA_T852U_STR-PCNT4 sy-vline 
WA_T852U_STR-PCNTD sy-vline 
WA_T852U_STR-KZNE sy-vline 
WA_T852U_STR-REASN sy-vline 
WA_T852U_STR-CTYPP sy-vline 
WA_T852U_STR-CTYPG sy-vline      INTO ld_text SEPARATED BY SPACE.

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