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In the Name field, you can search for a name or an e-mail address. The Text field enables you to search for any other text that might be found in the body of an e-mail, inside a calendar event, in an address book entry, in a memo, or in a task. If you decide to search for a name, then you can either type a few letters of a name, such as Martin, or press the Menu key and choose Select Name.

There will always be little inconsistencies like this that cause endless confusion, especially as you migrate through different versions of Oracle..

Listing 12-22. Handling Structured Exceptions // try_except.cpp #include <stdio.h> #include <windows.h> // for EXCEPTION_INT_DIVIDE_BY_ZERO #include <excpt.h> using namespace System; using namespace System::Runtime::InteropServices; #pragma unmanaged void generate_SEH_exception() { int i = 0; // Divide by zero generates an SEH exception. int x = 2 / i; } void generate_AV() { int *pn = 0; int n = *pn; // generates an access violation } int filter_div0(unsigned int code, struct _EXCEPTION_POINTERS *ep) { if (code == EXCEPTION_INT_DIVIDE_BY_ZERO) { return EXCEPTION_EXECUTE_HANDLER; } else { return EXCEPTION_CONTINUE_SEARCH; }; } // This must be a native function because __try/__except is not // allowed in the same function as code that uses try/catch. void try_except(bool bThrowUnhandledAV) { __try { if (bThrowUnhandledAV) generate_AV(); else generate_SEH_exception(); }

Then type a few letters to select the name from your contact list. Or press the Menu key and Click on the highlighted name. Select Name.

If you examine script btree_cost_02sql closely, you will see that it calls a copy of my hack_statssql script, which has been set to change the value of user_indexesnum_rows for the critical index Originally I had done this to check whether Oracle used the value of num_rows stored in user_tables or user_indexes when working with the less common uses of indexes In 8i and 9i, the reported cardinalities did not change when I made this change, but in 10104, I got the following results from the preceding query when I changed the num_rows value in user_indexes to 11,000 and 9,900 respectively: Execution Plan (10104, autotrace user_indexesnum_rows = 11,000) --------------------------------------------------------------------0 SELECT STATEMENT Optimizer=ALL_ROWS (Cost=264 Card=1 Bytes=58) 1 0 TABLE ACCESS (BY INDEX ROWID) OF 'T1' (TABLE) (Cost=264 Card=1 Bytes=58) 2 1 INDEX (RANGE SCAN) OF 'T1_I1' (INDEX) (Cost=184 Card=1797) Execution Plan (10.

If you are looking for a specific text, such as a word, phrase, or even phone number that is not in an e-mail address field, then you would type it into the Text field. When you are ready to start the search, click the trackpad and select Search.

104, autotrace user_indexesnum_rows = 9,900) -------------------------------------------------------------------0 SELECT STATEMENT Optimizer=ALL_ROWS (Cost=93 Card=1 Bytes=58) 1 0 TABLE ACCESS (BY INDEX ROWID) OF 'T1' (TABLE) (Cost=93 Card=1 Bytes=58) 2 1 INDEX (RANGE SCAN) OF 'T1_I1' (INDEX) (Cost=12 Card=82) In the case where I have boosted the value of num_rows from 10,000 to 11,000, the cardinality on the index line has gone up from 1,633 to 1,797 the optimizer seems to have used user_indexesnum_rows to calculate the cardinality of this line (1,797 = 1,633 * 11,000 / 10,000) Slightly surprising, but perfectly rational, and the cost of the query has not changed significantly, so quite a safe step But look what has happened when I artificially lowered the value of user_indexes num_rows the cost of the index line drops from its original 184 down to 12, and the cardinality drops from 1,633 to 82.

The constant , known as the decay constant, is used to represent ln 2 / halflife, so this could also be just

The results of the search are displayed with the number of found entries. The image to the right shows that there were four total matches found, three in the Messages (E-mail) and one in the Contacts.

The change in cardinality is no big deal, as the error is self-correcting by the time we reach the table but the dramatic drop in cost echoes on through the plan Basically, the arithmetic has simply dropped the cost of the leaf block scan (possibly through a simple numerical error: trunc(9,000 / 10,000) = 0) Of course, it isn t completely safe to draw absolutely firm conclusions from hacked statistics, so script btree_cost_02asql in the online code suite repeats the final test of btree_cost_02sql, but includes one extra line in setting up the data: update t1 set n1 = ind_pad = n2 = where rownum <= ;.