Functions This section describes all MI_SQL functions and their syntax. Numeric FunctionsString FunctionsDate and Time FunctionsConversion FunctionsGeometry Constructor FunctionsGeometry Predicate Functions (boolean)Geometry Observer Functions (return a scalar value)Geometry Measurement FunctionsGeometry Functions (return a geometry)Aggregation FunctionsGeometry Aggregation FunctionsRaster / Grid FunctionsMiscellaneous Other Functions