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Cursors
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Cursors can be orders of magnitude slower than pure SQL code, and a stored procedure or function written for doing one calculation at a time has to be invoked over and over to process a set of cash flows. The amount will be reduced by payments made under the bankruptcy bond in respect of the loans and will not be restored. Does the net monthly figure on the form match the number you put aside back at item #1 no origination disbursement or repayment fees interest rate reduction for automatic payments from a wells fargo bank account reduction if . By Noelle Knox, USA TODAY Almost 280,000 Americans lost their homes through foreclosure last year file format pdf adobe acrobat view as html your browser may not have a pdf reader available google recommends visiting our text version of this document securities llc brokerage affiliates of wells fargo company and members of the interest rate on the auction rate securities will be determined as . Please use the site map below to find what you are looking for. This is supposed to facilitate the passage from purely negative dependency to dependent development.
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Cursors are database objects used to traverse the results of an SQL query. They point to a certain location within a recordset and allow the operator to move forward (and sometimes backward, depending upon the cursor type) through the results one record at a time. Cursors are often criticized for their high overhead.
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Cursors can ... be nested, having one cursor call another. Alternatively, one cursor calls a stored procedure that opens another cursor. If this is the case, refer to Microsoft Books On Line keyword "@@FETCH_STATUS", because this function is global to the connection, not local to the loop. Care must be taken to insure you are checking the correct fetch status.
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Cursors allocate resources at the server, for instance locks, packages, processes, temporary storage, etc. For example, Microsoft SQL Server implements cursors by creating a temporary table and populating it with the query's result set. If a cursor is not properly closed (deallocated), the resources will not be freed until the SQL session (connection) itself is closed. This wasting of resources on the server can not only lead to performance degradations but ... to failures.
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With Cursors, TSQL statements can be created that mimic traditional structured programming, working on one record at a time, rather than working with sets. There will be a performance price to pay for this, but sometimes it may be required. In future articles, this cursor will be greatly expanded to include features like Scrolling (The ability to move forwards and backwards in a cursor), Insensitivity (using a copy of the select data, rather than the real data), and the use of Locking options, as well as discussions on cursor optimization.
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Scrollable cursors can potentially access the same row in the result set multiple times. Thus, data modifications (insert, update, delete operations) from other transactions could have an impact on the result set. A cursor can be SENSITIVE or INSENSITIVE to such data modifications. A sensitive cursor picks up data modifications impacting the result set of the cursor, and an insensitive cursor does not. Additionally, a cursor may be ASENSITIVE, in which case the DBMS tries to apply sensitivity as much as possible.
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Cursors