Web Reference: The COALESCE() function is the preferred standard for handling potential NULL values. The COALESCE() function returns the first non-NULL value in a list of values. The function ifnull is the SQLite equivalent of the isnull function the question was asking about. To anyone reading this now, please see SQLMenace's answer (from over a year and a half earlier nevertheless) before writing your own solution using CASE. A null value in a relational database is used when the value in a column is unknown or missing. A null is neither an empty string (for character or datetime data types) nor a zero value (for numeric data types). The ANSI SQL-92 specification states that a null must be the same for all data types, so that all nulls are handled consistently. The Syst...
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