Built-in operator call

An expression with operators is a compound expression that combines multiple expressions using builtin operators. The following sections discuss the supported operators in Yugabyte.

Nullary operations

OperatorDescription
EXISTS, NOT EXISTSpredicate for existence of a row
  • EXISTS and NOT EXISTS can only be used in the IF clause.

Unary operations

OperatorDescription-numeric negation+no-opNOTLogical (boolean) negation

  • Unary - and + can only be used with constant expressions such as -77.

Binary operations

OperatorDescriptionOR, ANDLogical (boolean) expression=, !=, <, <=, >, >=Comparison expression+Addition, append, or prepend-Subtraction or removal*Multiplication. Not yet supported/Division. Not yet supportedISNULL, IS NOT NULLNot yet supported comparison expression.

  • The first argument of comparison operators must be a column. For example, column_name = 7.
  • Comparing NULL with others always yields a false value. Operator ISNULL or IS NULL must be used when comparing with NULL.
  • When + and - are applied to a NULL argument of COUNTER data type, the NULL expression is replaced with a zero value before the computation. When these operators are applied to a NULL expression of all other numeric data types, the computed value is always NULL.
  • Operator + either prepends or appends a value to a LIST while operator - removes elements from LIST.
  • Operator + inserts new distinct elements to a MAP or SET while operator - removes elements from them.

See also