# Functions
ComputeArithmetic computes the arithmetic operation on two datums.
ComputeBit computes the bitwise operation on two datums.
FlagsToStatementContext creates a StatementContext from a `tipb.SelectRequest.Flags`.
NewEvaluator creates a new Evaluator instance.
# Constants
Error codes.
FlagIgnoreTruncate indicates if truncate error should be ignored.
FlagTruncateAsWarning indicates if truncate error should be returned as warning.
# Variables
Error instances.