Explain MySQL locks?

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In the below example, how many String Objects are created? String s1="I am Java Expert"; String s2="I am C Expert"; String s3="I am Java Expert";

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What is the datatype of image?

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List some mysql advantages and disadvantages?

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What is max_used_connections in mysql?

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In which language it is written?

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What does mysql workbench do?

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How to write optimized query in mysql?

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I have a table like this tblData (month int,Qty int) and i am inserting three rows in this table 1.tblData Values (1,100) 2.tblData Values (2,200) 3.tblData Values (3,300) The Result I want is the Running total of the field Qty that is 1 100 100 2 200 300 3 300 600 What is the Query for that ?

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what is mysql optimization in brief?

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How to change the database engine in mysql?

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Use a regular expression to find records. Use “REGEXP BINARY” to force case-sensitivity. This finds any record beginning with r.

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