Struct PrestoDialect 

pub struct PrestoDialect;

Presto dialect

Implementations

impl PrestoDialect

pub fn oracle_to_presto_format(fmt: &str) -> String

Convert Oracle/PostgreSQL-style date format to Presto’s C-style format Oracle: dd, hh, hh24, mi, mm, ss, yyyy, yy Presto: %d, %H, %H, %i, %m, %s, %Y, %y

pub fn presto_to_java_format(fmt: &str) -> String

Convert Presto’s C-style date format to Java-style format (for Hive/Spark) Presto: %Y, %m, %d, %H, %i, %S, %s, %y, %T, %F Java: yyyy, MM, dd, HH, mm, ss, ss, yy, HH:mm:ss, yyyy-MM-dd

pub fn normalize_presto_format(fmt: &str) -> String

Normalize Presto format strings (e.g., %H:%i:%S -> %T, %Y-%m-%d -> %F)

pub fn presto_to_duckdb_format(fmt: &str) -> String

Convert Presto’s C-style format to DuckDB C-style (only difference: %i -> %M for minutes)

pub fn presto_to_bigquery_format(fmt: &str) -> String

Convert Presto’s C-style format to BigQuery format

pub fn is_default_timestamp_format(fmt: &str) -> bool

Check if a Presto format string matches the default timestamp format

pub fn is_default_date_format(fmt: &str) -> bool

Check if a Presto format string matches the default date format

Trait Implementations

impl DialectImpl for PrestoDialect

fn dialect_type(&self) -> DialectType

Returns the DialectType that identifies this dialect.

fn tokenizer_config(&self) -> TokenizerConfig

Returns the tokenizer configuration for this dialect.

fn generator_config(&self) -> GeneratorConfig

Returns the generator configuration for this dialect.

fn transform_expr(&self, expr: Expression) -> Result<Expression>

Transforms a single expression node for this dialect, without recursing into children.

fn generator_config_for_expr(&self, _expr: &Expression) -> GeneratorConfig

Returns a generator configuration tailored to a specific expression.

fn preprocess(&self, expr: Expression) -> Result<Expression>

Applies whole-tree preprocessing transforms before the recursive per-node pass.