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Next, we ll check to see if we are getting a new query that needs to be parsed. If the last query we parsed is the same as the current query, we can skip this step. It is very important to note that on line 47 we are verifying that the P_QUERY passed to us is just a SELECT we will use this package only to execute SQL SELECT statements. This check validates that for us: 45 46 47 48 49 50 51 52 53 54 if ( p_query <> g_query or g_query is NULL ) then if ( upper(trim(nvl(p_query,'x'))) not like 'SELECT%') then raise_application_error (-20001, 'This must be a select only' ); end if; dbms_sql.parse( g_cursor, p_query, dbms_sql.native ); g_query := p_query; end if;

We are ready to bind the inputs to this query. Any non-NULL names that were passed to us will be bound to the query, so when we execute it, it finds the right row: 55 56 57 58 59 bind_variable( bind_variable( bind_variable( bind_variable( p_name1, p_name2, p_name3, p_name4, p_bind1 p_bind2 p_bind3 p_bind4 ); ); ); );

And now we can execute the query and fetch the row. Using DBMS_SQL.COLUMN_VALUE_LONG, we extract the necessary substring of the LONG and return it: 60 61 62 dbms_sql.define_column_long(g_cursor, 1); if (dbms_sql.execute_and_fetch(g_cursor)>0) then

} } ...

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In any of the Report Layouts, you can format the outer row fields, so each item has a blank row after it. All the outer row fields will be affected by this setting. 1. Select a cell in the pivot table, and on the Ribbon, click the Design tab. 2. In the Layout group, click Blank Rows, and then click Insert Blank Line After Each Item.

63 dbms_sql.column_value_long 64 (g_cursor, 1, p_for, p_from-1, 65 l_buffer, l_buffer_len ); 66 end if; 67 return l_buffer; 68 end substr_of; 69 70 end; 71 / Package body created. That s it you should be able to use that package against any legacy LONG column in your database, allowing you to perform many WHERE clause operations that were not possible before. For example, you can now find all partitions in your schema such that the HIGH_VALUE has the year 2003 in it (please remember that if you do not have any tables with 2003 in the partition high value, you would not expect to see anything returned!): ops$tkyte@ORA11GR2> select * 2 from ( 3 select table_owner, table_name, partition_name, 4 long_help.substr_of 5 ( 'select high_value 6 from all_tab_partitions 7 where table_owner = :o 8 and table_name = :n 9 and partition_name = :p', 10 1, 4000, 11 'o', table_owner, 12 'n', table_name, 13 'p', partition_name ) high_value 14 from all_tab_partitions 15 where table_name = 'T' 16 and table_owner = user 17 ) 18 where high_value like '%2003%' 19 / TABLE_OWN TABLE PARTIT HIGH_VALUE --------- ----- ------ -----------------------------OPS$TKYTE T PART1 TO_DATE(' 2003-03-13 00:00:00' , 'SYYYY-MM-DD HH24:MI:SS', 'N LS_CALENDAR=GREGORIAN') OPS$TKYTE T PART2 TO_DATE(' 2003-03-14 00:00:00' , 'SYYYY-MM-DD HH24:MI:SS', 'N LS_CALENDAR=GREGORIAN')

Using this same technique that of processing the result of a query that returns a single row with a single LONG column in a function you can implement your own INSTR, LIKE, and so on as needed. This implementation works well on the LONG type, but will not work on LONG RAW types. LONG RAWs are not piecewise accessible (there is no COLUMN_VALUE_LONG_RAW function in DBMS_SQL). Fortunately, this is not too serious of a restriction since LONG RAWs are not used in the dictionary and the need to substring so you can search on it is rare. If you do have a need to do so, however, you will not use PL/SQL unless

the LONG RAW is 32KB or less, as there is simply no method for dealing with LONG RAWs over 32KB in PL/SQL itself. Java, C, C++, Visual Basic, or some other language would have to be used. Another approach is to temporarily convert the LONG or LONG RAW into a CLOB or BLOB using the TO_LOB built-in function and a global temporary table. Your PL/SQL procedure could be as follows: Insert into global_temp_table ( blob_column ) select to_lob(long_raw_column) from t where This would work well in an application that occasionally needs to work with a single LONG RAW value. You would not want to continuously do that, however, due to the amount of work involved. If you find yourself needing to resort to this technique frequently, you should definitely convert the LONG RAW to a BLOB once and be done with it.

db.close(); } catch (java.lang.Exception e) { System.err.println("error: " + e); }

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