Trait tidb_query_datatype::codec::data_type::AsMySQLBool

pub trait AsMySQLBool {
    fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>;
}

A trait of evaluating current concrete eval type into a MySQL logic value, represented by Rust’s bool type.

Required methods

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

Evaluates into a MySQL logic value.

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Implementations on Foreign Types

impl<'a, T: AsMySQLBool> AsMySQLBool for &'a T

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl<'a, T> AsMySQLBool for Option<&'a T> where
    T: AsMySQLBool, 

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for Option<BytesRef<'a>>

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for Option<JsonRef<'a>>

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for Option<EnumRef<'a>>

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for Option<SetRef<'a>>

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

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Implementors

impl AsMySQLBool for ScalarValue

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Decimal

fn as_mysql_bool(&self, _ctx: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Duration

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Enum

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Json

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Set

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Time

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Bytes

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Int

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl AsMySQLBool for Real

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for EnumRef<'a>

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for JsonRef<'a>

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for SetRef<'a>

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

impl<'a> AsMySQLBool for BytesRef<'a>

fn as_mysql_bool(&self, context: &mut EvalContext) -> Result<bool>

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