sql-school.blogspot.com
SQL School: SQL DELETE Statement
http://sql-school.blogspot.com/2010/08/sql-delete-statement.html
Free SQL Tutorial for all. The DELETE statement is used to delete records in a table. The DELETE statement is used to delete rows in a table. DELETE FROM table name. WHERE some column=some value. Notice the WHERE clause in the DELETE syntax. The WHERE clause specifies which record or records that should be deleted. If you omit the WHERE clause, all records will be deleted! Now we want to delete the person "Tjessem, Jakob" in the "Persons" table. We use the following SQL statement:. DELETE FROM table name.
sql-school.blogspot.com
SQL School: SQL ORDER BY Keyword
http://sql-school.blogspot.com/2010/08/sql-order-by-keyword.html
Free SQL Tutorial for all. SQL ORDER BY Keyword. The ORDER BY keyword is used to sort the result-set. The ORDER BY Keyword. The ORDER BY keyword is used to sort the result-set by a specified column. The ORDER BY keyword sort the records in ascending order by default. If you want to sort the records in a descending order, you can use the DESC keyword. SQL ORDER BY Syntax. ORDER BY column name(s) ASC DESC. We use the following SELECT statement:. SELECT * FROM Persons. The result-set will look like this:.
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SQL School: SQL INSERT INTO Statement
http://sql-school.blogspot.com/2010/08/sql-insert-into-statement.html
Free SQL Tutorial for all. SQL INSERT INTO Statement. The INSERT INTO statement is used to insert new records in a table. The INSERT INTO Statement. The INSERT INTO statement is used to insert a new row in a table. SQL INSERT INTO Syntax. It is possible to write the INSERT INTO statement in two forms. The first form doesn't specify the column names where the data will be inserted, only their values:. INSERT INTO table name. VALUES (value1, value2, value3,.). VALUES (value1, value2, value3,.). NCML (Natio...
sql-school.blogspot.com
SQL School: Oracle SQL Developer
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Free SQL Tutorial for all. Oracle SQL Developer is a free. And fully supported graphical tool for database development. With SQL Developer, you can browse database objects, run SQL statements and SQL scripts, and edit and debug PL/SQL statements. You can also run any number of provided reports, as well as create and save your own. SQL Developer enhances productivity and simplifies your database development tasks. Oracle SQL Developer 2.1 Patch 1 (2.1.1.64.45). Subscribe to: Posts (Atom).
sql-school.blogspot.com
SQL School: SQL TOP Clause
http://sql-school.blogspot.com/2010/08/sql-top-clause.html
Free SQL Tutorial for all. The TOP clause is used to specify the number of records to return. The TOP clause can be very useful on large tables with thousands of records. Returning a large number of records can impact on performance. Not all database systems support the TOP clause. SELECT TOP number percent column name(s). SQL SELECT TOP Equivalent in MySQL and Oracle. Now we want to select only the two first records in the table above. We use the following SELECT statement:. SELECT TOP 2 * FROM Persons.
sql-school.blogspot.com
SQL School: Introduction to SQL
http://sql-school.blogspot.com/2010/08/introduction-to-sql.html
Free SQL Tutorial for all. SQL is a standard language for accessing and manipulating databases. SQL stands for Structured Query Language. SQL lets you access and manipulate databases. SQL is an ANSI (American National Standards Institute) standard. What Can SQL do? SQL can execute queries against a database. SQL can retrieve data from a database. SQL can insert records in a database. SQL can update records in a database. SQL can delete records from a database. SQL can create new databases. RDBMS is the b...
sql-school.blogspot.com
SQL School: SQL WHERE Clause
http://sql-school.blogspot.com/2010/08/sql-where-clause.html
Free SQL Tutorial for all. The WHERE clause is used to filter records. The WHERE clause is used to extract only those records that fulfill a specified criterion. WHERE column name operator value. Now we want to select only the persons living in the city "Sandnes" from the table above. We use the following SELECT statement:. SELECT * FROM Persons. The result-set will look like this:. Quotes Around Text Fields. SQL uses single quotes around text values (most database systems will also accept double quotes).
sql-school.blogspot.com
SQL School: SQL Alias
http://sql-school.blogspot.com/2010/08/sql-alias.html
Free SQL Tutorial for all. With SQL, an alias name can be given to a table or to a column. You can give a table or a column another name by using an alias. This can be a good thing to do if you have very long or complex table names or column names. An alias name could be anything, but usually it is short. SQL Alias Syntax for Tables. SQL Alias Syntax for Columns. SELECT column name AS alias name. Now we want to list all the orders that "Ola Hansen" is responsible for. FROM Persons AS p,.
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SQL School: Free SQL Tutorial for Biggners
http://sql-school.blogspot.com/2010/08/welcome-to-sql-school.html
Free SQL Tutorial for all. Free SQL Tutorial for Biggners. Welcome to SQL-School.blogspot.com! This unique introductory SQL tutorial not only provides easy-to-understand SQL instructions. Subscribe to: Post Comments (Atom). خبرنامہ نیوز پاکستان Khabar Nama News. چیچہ وطنی میں ساڑھے 3 فٹ کا نوجوان اپنے سے بھی چھوٹے 3 فٹ قد کی دلہن بیاہ لایا. Infolinks In Text Ads. NCML (National Computer Masters PVT. Ltd.). Awesome Inc. template. Powered by Blogger.
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