Struct tidb_query_datatype::expr::EvalContext

pub struct EvalContext {
    pub cfg: Arc<EvalConfig>,
    pub warnings: EvalWarnings,
}

Some global variables needed in an evaluation.

Fields

cfg: Arc<EvalConfig>

warnings: EvalWarnings

Implementations

impl EvalContext

pub fn new(cfg: Arc<EvalConfig>) -> EvalContext

pub fn handle_truncate(&mut self, is_truncated: bool) -> Result<()>

pub fn handle_truncate_err(&mut self, err: Error) -> Result<()>

pub fn handle_overflow_err(&mut self, err: Error) -> Result<()>

handle_overflow treats ErrOverflow as warnings or returns the error based on the cfg.handle_overflow state.

pub fn handle_division_by_zero(&mut self) -> Result<()>

pub fn handle_invalid_time_error(&mut self, err: Error) -> Result<()>

pub fn overflow_from_cast_str_as_int(
    &mut self,
    bytes: &[u8],
    orig_err: Error,
    negative: bool
) -> Result<i64>

pub fn take_warnings(&mut self) -> EvalWarnings

pub fn should_clip_to_zero(&self) -> bool

Indicates whether values less than 0 should be clipped to 0 for unsigned integer types. This is the case for insert, update, alter table and load data infile statements, when not in strict SQL mode. see https://dev.mysql.com/doc/refman/5.7/en/out-of-range-and-overflow.html

Trait Implementations

impl Debug for EvalContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for EvalContext

fn default() -> EvalContext

Returns the “default value” for a type.