How Can I Efficiently Determine the Size of a java.sql.ResultSet?

Determining the Size of a java.sql.ResultSet

Finding the number of rows in a java.sql.ResultSet might seem trivial, but there's no direct size() or length() method.

*Method 1: `SELECT COUNT()` Query**

The most efficient way is to execute a separate SELECT COUNT(*) query. This directly returns the row count without needing to process the entire result set.

Method 2: Using rs.last() and rs.getRow()

Another approach involves using rs.last() to move the cursor to the end of the result set, then calling rs.getRow() to get the row number (which equals the size).

Both methods efficiently determine the ResultSet size without iterating through all rows, ensuring accuracy and performance.

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