/**
* Creates an inference rule which returns a type with precision but no scale, such as {@code
* VARCHAR(100)}.
*/
public static ExplicitReturnTypeInference explicit(SqlTypeName typeName, int precision) {
return explicit(RelDataTypeImpl.proto(typeName, precision, false));
}
/** Creates an inference rule which returns a copy of a given data type. */
public static ExplicitReturnTypeInference explicit(RelDataType type) {
return explicit(RelDataTypeImpl.proto(type));
}