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frameworks_base/core/java/android
Hyoseong Kim ac4daee248 Add additional Method that check whether a table is empty or not
Application Devleopers are using queryNumEntries API
implemented by "COUNT(*)" to check whether a table is empty or not.
COUNT(*)  has to process the entire table to compute the result.
But, "EXISTS" can stop after a single matching row has been found.
So, Using "EXISTS" is more faster than "COUNT(*)"
I added new API using "EXISTS" to check whether a table is empty or not

Change-Id: Idcc2633d0a5349c59f41e125cf34c9dc6622cdbe
2013-04-01 15:55:55 +09:00
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