Struct datafusion_sql::unparser::dialect::MySqlDialect

pub struct MySqlDialect {}

Trait Implementations

impl Dialect for MySqlDialect

fn identifier_quote_style(&self, _: &str) -> Option<char>

Return the character used to quote identifiers.

fn supports_nulls_first_in_sort(&self) -> bool

Does the dialect support specifying NULLS FIRST/LAST in ORDER BY clauses?

fn interval_style(&self) -> IntervalStyle

fn utf8_cast_dtype(&self) -> DataType

The SQL type to use for Arrow Utf8 unparsing Most dialects use VARCHAR, but some, like MySQL, require CHAR

fn large_utf8_cast_dtype(&self) -> DataType

The SQL type to use for Arrow LargeUtf8 unparsing Most dialects use TEXT, but some, like MySQL, require CHAR

fn date_field_extract_style(&self) -> DateFieldExtractStyle

The date field extract style to use: DateFieldExtractStyle

fn int64_cast_dtype(&self) -> DataType

The SQL type to use for Arrow Int64 unparsing Most dialects use BigInt, but some, like MySQL, require SIGNED

fn timestamp_cast_dtype( &self, _time_unit: &TimeUnit, _tz: &Option<Arc<str>>, ) -> DataType

The SQL type to use for Timestamp unparsing Most dialects use Timestamp, but some, like MySQL, require Datetime Some dialects like Dremio does not support WithTimeZone and requires always Timestamp

fn use_timestamp_for_date64(&self) -> bool

Does the dialect use TIMESTAMP to represent Date64 rather than DATETIME? E.g. Trino, Athena and Dremio does not have DATETIME data type

fn float64_ast_dtype(&self) -> DataType

Does the dialect use DOUBLE PRECISION to represent Float64 rather than DOUBLE? E.g. Postgres uses DOUBLE PRECISION instead of DOUBLE