Module datafusion_expr::type_coercion::binary

Coercion rules for matching argument types for binary operators

Functions

• any_decimal
  Determine if at least of one of lhs and rhs is decimal
• coerce_types
  Coercion rules for all binary operators. Returns the ‘coerce_types’ is returns the type the arguments should be coerced to
• coercion_decimal_mathematics_type
  Returns the coerced type of applying mathematics operations on decimal types. Two sides of the mathematics operation will be coerced to the same type. Note that we don’t coerce the decimal operands in analysis phase, but do it in the execution phase because this is not idempotent.
• comparison_coercion
  Returns the output type of applying comparison operations such as eq, not eq, lt, lteq, gt, and gteq to arguments of lhs_type and rhs_type.
• decimal_op_mathematics_type
  Returns the output type of applying mathematics operations on decimal types. The rule is from spark. Note that this is different to the coerced type applied to two sides of the arithmetic operation.
• get_result_type
  returns the resulting type of a binary expression evaluating the op with the left and right hand types
• like_coercion
  coercion rules for like operations. This is a union of string coercion rules and dictionary coercion rules
• math_decimal_coercion
  Coercion rules for mathematics operators between decimal and non-decimal types.
• regex_coercion
  coercion rules for regular expression comparison operations. This is a union of string coercion rules and dictionary coercion rules