mail-id table contains two columns(email_id,userid) it contains different types of mail-ids,and no of users. here username length is differ na,(ex- tamil@yahoo.com,joshua@hotmail.com like) now i want to fetch the email-ids only starting from '@' (ex-@gmail.com,@yahoo.com,@hotmail.com

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Its possible to add more than one primary key for the table

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What is the least restrictive isolation level? : Transact sql

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1 SELECT a.field1, b.field2, c.field3, d.field4 2 FROM atable a, atable b, ctable c, dtable d 3 ? 4 ORDER BY 1 What is the minimum number of joins that must be specified on line 3 in the sample code above to properly link the tables? Notice that the table "atable" is aliased twice: once as "a" and once as "b." 1. One join 2. Two joins 3. Three joins 4. Four joins 5. Five joins

6 Answers   Sonata,

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How do we tune the code?

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How do I partition in sql?

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What is the difference between an inner and outer join?

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What will you get by the cursor attribute sql%notfound?

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How does a trigger work?

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how will you find out the last three records in a table with n no of records and delete them

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What is the difference between a subquery and a join?

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What are properties of the transaction?

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