No match found for function signature IF

[wrstrs]

hi, all

how to solve this problem?




Caused by: org.apache.calcite.sql.validate.SqlValidatorException: No match 
found for function signature IF(<BOOLEAN&gt;, <NUMERIC&gt;, <NUMERIC&gt;)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)