ABAP Select data from SAP table SQIXADVDB4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SQIXADVDB4 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 SQIXADVDB4. 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 SQIXADVDB4 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_SQIXADVDB4 TYPE STANDARD TABLE OF SQIXADVDB4,
      WA_SQIXADVDB4 TYPE SQIXADVDB4,
      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: <SQIXADVDB4> TYPE SQIXADVDB4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SQIXADVDB4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SQIXADVDB4
  INTO TABLE IT_SQIXADVDB4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SQIXADVDB4
*  INTO TABLE @DATA(IT_SQIXADVDB42).
*--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_SQIXADVDB4 INDEX 1 INTO DATA(WA_SQIXADVDB42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SQIXADVDB4 ASSIGNING <SQIXADVDB4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SQIXADVDB4>-TABLE_SCHEMA = 1.
<SQIXADVDB4>-TABLE_NAME = 1.
<SQIXADVDB4>-PARTITION_NAME = 1.
<SQIXADVDB4>-INDEX_TYPE = 1.
<SQIXADVDB4>-LAST_ADVISED = 1.

ENDLOOP.

LOOP AT IT_SQIXADVDB4 INTO WA_SQIXADVDB4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SQIXADVDB4-TIMES_ADVISED, sy-vline,
  WA_SQIXADVDB4-EST_CREATE_TIME, sy-vline,
  WA_SQIXADVDB4-REASON_ADVISED, sy-vline,
  WA_SQIXADVDB4-LOGICAL_PAGESIZE, sy-vline,
  WA_SQIXADVDB4-MOST_EXP_QUERY, sy-vline,
  WA_SQIXADVDB4-AVG_QUERY_EST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SQIXADVDB4 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_SQIXADVDB4 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_SQIXADVDB4 INTO WA_SQIXADVDB4.


*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_SQIXADVDB4_STR, 
TABLE_SCHEMA TYPE STRING,
TABLE_NAME TYPE STRING,
PARTITION_NAME TYPE STRING,
INDEX_TYPE TYPE STRING,
LAST_ADVISED TYPE STRING,
TIMES_ADVISED TYPE STRING,
EST_CREATE_TIME TYPE STRING,
REASON_ADVISED TYPE STRING,
LOGICAL_PAGESIZE TYPE STRING,
MOST_EXP_QUERY TYPE STRING,
AVG_QUERY_EST TYPE STRING,
TABLE_SIZE TYPE STRING,
NLSS_TABLENAME TYPE STRING,
NLSS_TABLESCHEMA TYPE STRING,
MTI_USED TYPE STRING,
MTI_CREATED TYPE STRING,
LAST_MTI_USED TYPE STRING,
KEY_COLS_ADVISED TYPE STRING,
LEADING_COL_KEYS TYPE STRING,
AVG_QUERY_EST_MICR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SQIXADVDB4_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_SQIXADVDB4_STR-TABLE_SCHEMA sy-vline 
WA_SQIXADVDB4_STR-TABLE_NAME sy-vline 
WA_SQIXADVDB4_STR-PARTITION_NAME sy-vline 
WA_SQIXADVDB4_STR-INDEX_TYPE sy-vline 
WA_SQIXADVDB4_STR-LAST_ADVISED sy-vline 
WA_SQIXADVDB4_STR-TIMES_ADVISED sy-vline 
WA_SQIXADVDB4_STR-EST_CREATE_TIME sy-vline 
WA_SQIXADVDB4_STR-REASON_ADVISED sy-vline 
WA_SQIXADVDB4_STR-LOGICAL_PAGESIZE sy-vline 
WA_SQIXADVDB4_STR-MOST_EXP_QUERY sy-vline 
WA_SQIXADVDB4_STR-AVG_QUERY_EST sy-vline 
WA_SQIXADVDB4_STR-TABLE_SIZE sy-vline 
WA_SQIXADVDB4_STR-NLSS_TABLENAME sy-vline 
WA_SQIXADVDB4_STR-NLSS_TABLESCHEMA sy-vline 
WA_SQIXADVDB4_STR-MTI_USED sy-vline 
WA_SQIXADVDB4_STR-MTI_CREATED sy-vline 
WA_SQIXADVDB4_STR-LAST_MTI_USED sy-vline 
WA_SQIXADVDB4_STR-KEY_COLS_ADVISED sy-vline 
WA_SQIXADVDB4_STR-LEADING_COL_KEYS sy-vline 
WA_SQIXADVDB4_STR-AVG_QUERY_EST_MICR sy-vline      INTO ld_text SEPARATED BY SPACE.

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