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ExecuteScalarAsync(String, Object[], CancellationToken)
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sql, parameterValues, cancellationToken
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Executes the specified SQL query and returns the first column of the first row in the result set returned by the query.
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ExecuteScalarAsync(String, String[], Object[], CancellationToken)
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sql, parameterNames, parameterValues, cancellationToken
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Asynchronously executes the specified SQL query and returns the first column of the first row in the result set returned by the query.
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ExecuteScalarAsync(String, CancellationToken)
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sql, cancellationToken
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Executes the specified SQL query and returns the first column of the first row in the result set returned by the query.
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