Include EXPLAIN command in the embedded dynamic SQL statements 52.How do you simulate the EXPLAIN of an embedded SQL statement in SPUFI/QMF? Give an example with a host variable in WHERE clause.)

Yes, Virtuoso implements SQL extensions that enable the results of standard SQL queries to be transformed into XML documents, these documents are openly accessible to user agents such as Web Browsers via HTTP and/or WebDAV. It is important to note that these SQL-XML documents are URL accessible, and sensitive to the underlying changes that occur in the underlying database tables from which they have been derived.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Private Sub ddlCulture_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ddlCulture.SelectedIndexChanged

A collection of 18 tips on managing tables and data rows with PHP scripts. Clear explanations and tutorial exercises are provided on creating and dropping tables; inserting, updating, and deleting rows, selecting and looping through data rows by pages; setting auto-increment IDs.

Many users attempt to alias SQL statements or clauses like this: 1> \alias nrows="SELECT COUNT(*) FROM *!" 1> nrows syscolumns; sqsh: Invalid command however it is stated in the manual page that \alias only applies to aliasing other sqsh commands. The above problem can be expressed using environment variables as: 1> \set nrows="SELECT COUNT(*) FROM" 1> $nrows syscolumns; This problem is covered extensively in README.SGI supplied with the sqsh distribution.

Yes, the SQL to XML functionality sits above Virtuoso's virtual database functionality, which enables a unified logical and physical representation of database tables and views that reside in disparate database engines from different database vendors. The only requirement is that these database have to be ODBC or JDBC accessible - implying the existence of data access drivers for these databases.

When building up a single SQL statement in a string, do not include any semicolon at the end (inside the quotation marks). When building up a PL/SQL anonymous block, include the semicolon at the end of each PL/SQL statement and at the end of the anonymous block. You will have a semicolon right before the end of the string literal, and another right after the closing single quotation mark.

Starting from Oracle8i one can use the "EXECUTE IMMEDIATE" statement to execute dynamic SQL and PL/SQL statements (statements created at run-time). Look at these examples. Note that the statements within quotes are NOT semicolon terminated: EXECUTE IMMEDIATE 'CREATE TABLE x (a NUMBER)'; -- Using bind variables... sql_stmt := 'INSERT INTO dept VALUES (:1, :2, :3)'; EXECUTE IMMEDIATE sql_stmt USING dept_id, dept_name, location; -- Returning a cursor..

Hi there - I am new to Oracle (used to Ingres).I am having trouble creating a database.I keep getting the following oracle errors.ORA-01501ORA-01519ORA-00604ORA-30012Can you tell me what I am doing incorrectly?Many thankseibbed

Where n is an integer, and word is an alpha-numeric identifier (or number). When the placeholder is associated with a number, that number identifies the index of the bind variable to replace it with. When it is an identifier, it identifies the name of the correponding bind variable. (In the instance of the first format—a single question mark—the placeholder is assigned a number one greater than the last index used, or 1 if it is the first.

When you got the error you got a SQL state code. Type ? and the code to get more information on the error.

Disk Groups help you organize Dynamic Disks and help to prevent data loss. Windows 2000 allows only one Disk Group per computer (this may change). Disk Groups can organize storage when you use Veritas LDM-Pro. A Disk Group uses a name consisting of the computer name plus a suffix of Dg0. If you use LDM-Pro, the suffix can be incremental, such as Dg1 or Dg2. To view the name of your disk group, see the following registry entry:

Do an explain on the statement or program which will give details as to the access path the optimizer has chosen.

Is it possible to write a trigger referencing more than one table - I want a trigger to audit a master/detail pair. Is it possible to easily convert existing SQL scripts into a format that cannot be read or altered? This is to improve security on an existing site.

The semi colon is only used to end a multi-line SQL command. The Oterro engine does not support multi-line commands. All you should need to do if you are accessing a database through an ODBC connection is to replace the database name in the connect string. When using DAO or RDO controls, you would replace the database name with an ODBC connection to the Oterro database.

Use back-ticks to refer to the column names and then alias them so you can refer to them as something else: SELECT 'First Name' AS FirstName, 'Last-Name' AS LastName, PhoneExtension FROM Employees ORDER BY 'Last Name', 'First Name'

Statements including group functions impact performance. Use a WHERE clause to exclude unwanted rows. HAVING should only be used with an aggregate condition. Inappropriate use of the HAVING clause increases response time. READ_MODULE reads the last module and action names set by SET_ACTION or SET_MODULE. READ_CLIENT_INFO reads the last client information set for the session.

Because SALARY is not declared to have NULLs and the employees for whom the salary is not known are also counted.

Okay. The first point is the purposeful arrangement of parts. Science doesn't really deal with questions of purpose, value, and meaning. So to say that science has discovered a purposeful arrangement of parts puts science on the other side of this divide of empirical knowledge where it doesn't belong, so that certainly is not true.

Solution: Indexing allows a SAS data set to be used (by Eventus in this case) as if the data set were sorted by the index variable or variables. In Eventus 8, you no longer need to index the mini-database component data sets; Eventus builds the indexes for you automatically. Further event studies can be run using the same estimation period for each firm as in the first event study using a request file setup process similar to that shown for the second event study above.