Geospatial and array column projections are not supported in the COALESCE function and CASE expressions.
You can use a subquery anywhere an expression can be used, subject to any runtime constraints of that expression. For example, a subquery in a CASE statement must return exactly one row, but a subquery can return multiple values to an IN expression.
You can use a subquery anywhere a table is allowed (for example, FROM subquery), using aliases to name any reference to the table and columns returned by the subquery.
Operator
Description
AND
Logical AND
NOT
Negates value
OR
Logical OR
Expression
Description
CASE WHEN condition THEN result ELSE default END
Case operator
COALESCE(val1, val2, ..)
Returns the first non-null value in the list
Expression
Description
expr IN (subquery or list of values)
Evaluates whether expr equals any value of the IN list.
expr NOT IN (subquery or list of values)
Evaluates whether expr does not equal any value of the IN list.