ABAP Select data from SAP table T853 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T853 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 T853. 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 T853 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_T853 TYPE STANDARD TABLE OF T853,
      WA_T853 TYPE T853,
      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: <T853> TYPE T853.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T853.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T853
  INTO TABLE IT_T853.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T853
*  INTO TABLE @DATA(IT_T8532).
*--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_T853 INDEX 1 INTO DATA(WA_T8532).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T853 ASSIGNING <T853>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T853>-MANDT = 1.
<T853>-RLDNR = 1.
<T853>-RVERS = 1.
<T853>-RCOMP = 1.
<T853>-RYEAR = 1.

ENDLOOP.

LOOP AT IT_T853 INTO WA_T853.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T853-PERID, sy-vline,
  WA_T853-INRIN, sy-vline,
  WA_T853-INRDT, sy-vline,
  WA_T853-INRUS, sy-vline,
  WA_T853-INDAT, sy-vline,
  WA_T853-INERR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T853 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_T853 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_T853 INTO WA_T853.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T853-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T853-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T853-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T853-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T853-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T853-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_T853-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T853-RYEAR.
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_T853_STR, 
MANDT TYPE STRING,
RLDNR TYPE STRING,
RVERS TYPE STRING,
RCOMP TYPE STRING,
RYEAR TYPE STRING,
PERID TYPE STRING,
INRIN TYPE STRING,
INRDT TYPE STRING,
INRUS TYPE STRING,
INDAT TYPE STRING,
INERR TYPE STRING,
INBIN TYPE STRING,
INBDT TYPE STRING,
INBUS TYPE STRING,
PORIN TYPE STRING,
PORDT TYPE STRING,
PORUS TYPE STRING,
PODAT TYPE STRING,
POBIN TYPE STRING,
POBDT TYPE STRING,
POBUS TYPE STRING,
CCRIN TYPE STRING,
CCRDT TYPE STRING,
CCRUS TYPE STRING,
CCDAT TYPE STRING,
CCBIN TYPE STRING,
CCBDT TYPE STRING,
CCBUS TYPE STRING,
CCERR TYPE STRING,
PZ TYPE STRING,
RSBIN TYPE STRING,
RSDAT TYPE STRING,
RSTIM TYPE STRING,
INTIM TYPE STRING,
POTIM TYPE STRING,
CCTIM TYPE STRING,
KZCHP TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
CHUSE TYPE STRING,
IMSTS TYPE STRING,
IMDAT TYPE STRING,
IMTIM TYPE STRING,
IMUSR TYPE STRING,
IMDBCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T853_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_T853_STR-MANDT sy-vline 
WA_T853_STR-RLDNR sy-vline 
WA_T853_STR-RVERS sy-vline 
WA_T853_STR-RCOMP sy-vline 
WA_T853_STR-RYEAR sy-vline 
WA_T853_STR-PERID sy-vline 
WA_T853_STR-INRIN sy-vline 
WA_T853_STR-INRDT sy-vline 
WA_T853_STR-INRUS sy-vline 
WA_T853_STR-INDAT sy-vline 
WA_T853_STR-INERR sy-vline 
WA_T853_STR-INBIN sy-vline 
WA_T853_STR-INBDT sy-vline 
WA_T853_STR-INBUS sy-vline 
WA_T853_STR-PORIN sy-vline 
WA_T853_STR-PORDT sy-vline 
WA_T853_STR-PORUS sy-vline 
WA_T853_STR-PODAT sy-vline 
WA_T853_STR-POBIN sy-vline 
WA_T853_STR-POBDT sy-vline 
WA_T853_STR-POBUS sy-vline 
WA_T853_STR-CCRIN sy-vline 
WA_T853_STR-CCRDT sy-vline 
WA_T853_STR-CCRUS sy-vline 
WA_T853_STR-CCDAT sy-vline 
WA_T853_STR-CCBIN sy-vline 
WA_T853_STR-CCBDT sy-vline 
WA_T853_STR-CCBUS sy-vline 
WA_T853_STR-CCERR sy-vline 
WA_T853_STR-PZ sy-vline 
WA_T853_STR-RSBIN sy-vline 
WA_T853_STR-RSDAT sy-vline 
WA_T853_STR-RSTIM sy-vline 
WA_T853_STR-INTIM sy-vline 
WA_T853_STR-POTIM sy-vline 
WA_T853_STR-CCTIM sy-vline 
WA_T853_STR-KZCHP sy-vline 
WA_T853_STR-CHDAT sy-vline 
WA_T853_STR-CHTIM sy-vline 
WA_T853_STR-CHUSE sy-vline 
WA_T853_STR-IMSTS sy-vline 
WA_T853_STR-IMDAT sy-vline 
WA_T853_STR-IMTIM sy-vline 
WA_T853_STR-IMUSR sy-vline 
WA_T853_STR-IMDBCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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