Relational Operators Relational operators compare one expression to another. The following table lists the supported relational operators. Table 44. Relational Operators Supported with Impala Entry SQL Level Operator Support in Impala SQL <> Supported < Supported <= Supported = Supported <=> Supported > Supported >= Supported IS [NOT] NULL Supported [NOT] BETWEEN x AND y Supported [NOT] IN Supported EXISTS Supported [NOT] LIKE Supported, except that no collate clause is allowed RLIKE Supported REGEXP Supported