Why is sharding used?
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What will you get by the cursor attribute sql%found?
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i need department wise top 2 employees salary.which logic i will use
column A column b | output 10 7 | 10 5 8 | 8 7 -9 | 7 3 5 | 5 0 6 | 6 Write a sql query to print such output.
How is indexing done in search engines?
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