Can any one tell me how to increase the performance of a sql query ie what are the performance tips in creating or writing a sql query !!?

3 Answers   eBay,

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What is dba in sql? : SQL DBA

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How to display all Friday's in a year with date?

4 Answers   Flipkart,

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How do I remove duplicates in two columns?

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What is difference between left and right outer join?

0 Answers  

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If I have a table T with 4 rows & 2 columns A & B. A has values 1,2,3,4. and B has 10,20,30,40. Write an Update SQL query which can Swap the values of A & B for all records. (Do not use a sub-query)

5 Answers  

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How do I view tables in sql developer?

0 Answers  

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A table was given with 3 columns like Manager id,Manager Name and Employee name. Question was to create hierarchy.

2 Answers   TCS,

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what are the performance and scalability characteristics of mysql? : Sql dba

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i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id. pls give me answer. i want urgent

3 Answers  

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I want to display the employees who have joined in last two months. (It should be executed randomly means If I execute the query in March it should display Jan and Feb joined employees. Same query if i execute in Feb, 2007 it should display dec, 2006 and jan 2007 joined employees.

15 Answers   Wipro,

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What is a sql statement?

0 Answers  

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