ABAP Select data from SAP table ASTAT_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASTAT_LIST
*  INTO TABLE @DATA(IT_ASTAT_LIST2).
*--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_ASTAT_LIST INDEX 1 INTO DATA(WA_ASTAT_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASTAT_LIST>-APNAM = 1.
<ASTAT_LIST>-DESCR = 1.
<ASTAT_LIST>-COUNT = 1.
<ASTAT_LIST>-RESPTI = 1.
<ASTAT_LIST>-CPUTI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASTAT_LIST-QUEUETI, sy-vline,
  WA_ASTAT_LIST-DBCALLTI, sy-vline,
  WA_ASTAT_LIST-BYTES, sy-vline,
  WA_ASTAT_LIST-DBCALLS, sy-vline,
  WA_ASTAT_LIST-READDIRCNT, sy-vline,
  WA_ASTAT_LIST-READSEQCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASTAT_LIST 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_ASTAT_LIST 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_ASTAT_LIST INTO WA_ASTAT_LIST.


*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_ASTAT_LIST_STR, 
APNAM TYPE STRING,
DESCR TYPE STRING,
COUNT TYPE STRING,
RESPTI TYPE STRING,
CPUTI TYPE STRING,
QUEUETI TYPE STRING,
DBCALLTI TYPE STRING,
BYTES TYPE STRING,
DBCALLS TYPE STRING,
READDIRCNT TYPE STRING,
READSEQCNT TYPE STRING,
CHNGCNT TYPE STRING,
PHYREADCNT TYPE STRING,
PHYCHNGREC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASTAT_LIST_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_ASTAT_LIST_STR-APNAM sy-vline 
WA_ASTAT_LIST_STR-DESCR sy-vline 
WA_ASTAT_LIST_STR-COUNT sy-vline 
WA_ASTAT_LIST_STR-RESPTI sy-vline 
WA_ASTAT_LIST_STR-CPUTI sy-vline 
WA_ASTAT_LIST_STR-QUEUETI sy-vline 
WA_ASTAT_LIST_STR-DBCALLTI sy-vline 
WA_ASTAT_LIST_STR-BYTES sy-vline 
WA_ASTAT_LIST_STR-DBCALLS sy-vline 
WA_ASTAT_LIST_STR-READDIRCNT sy-vline 
WA_ASTAT_LIST_STR-READSEQCNT sy-vline 
WA_ASTAT_LIST_STR-CHNGCNT sy-vline 
WA_ASTAT_LIST_STR-PHYREADCNT sy-vline 
WA_ASTAT_LIST_STR-PHYCHNGREC sy-vline      INTO ld_text SEPARATED BY SPACE.

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