Struct datafusion::sql::parser::DFParser

pub struct DFParser<'a> { /* private fields */ }

DataFusion SQL Parser based on sqlparser

This parser handles DataFusion specific statements, delegating to Parser for other SQL statements.

Implementations

impl<'a> DFParser<'a>

pub fn new(sql: &str) -> Result<DFParser<'a>, ParserError>

Create a new parser for the specified tokens using the GenericDialect.

pub fn new_with_dialect( sql: &str, dialect: &'a (dyn Dialect + 'static) ) -> Result<DFParser<'a>, ParserError>

Create a new parser for the specified tokens with the specified dialect.

pub fn parse_sql(sql: &str) -> Result<VecDeque<Statement, Global>, ParserError>

Parse a sql string into one or Statements using the GenericDialect.

pub fn parse_sql_with_dialect( sql: &str, dialect: &(dyn Dialect + 'static) ) -> Result<VecDeque<Statement, Global>, ParserError>

Parse a SQL string and produce one or more Statements with with the specified dialect.

pub fn parse_statement(&mut self) -> Result<Statement, ParserError>

Parse a new expression

pub fn parse_describe(&mut self) -> Result<Statement, ParserError>

Parse a SQL DESCRIBE statement

pub fn parse_copy(&mut self) -> Result<Statement, ParserError>

Parse a SQL COPY TO statement

pub fn parse_option_key(&mut self) -> Result<String, ParserError>

Parse the next token as a key name for an option list

Note this is different than parse_literal_string because it allows keywords as well as other non words

pub fn parse_option_value(&mut self) -> Result<Value, ParserError>

Parse the next token as a value for an option list

Note this is different than parse_value as it allows any word or keyword in this location.

pub fn parse_create(&mut self) -> Result<Statement, ParserError>

Parse a SQL CREATE statement handling CREATE EXTERNAL TABLE

pub fn parse_order_by_exprs( &mut self ) -> Result<Vec<OrderByExpr, Global>, ParserError>

Parse the ordering clause of a CREATE EXTERNAL TABLE SQL statement

pub fn parse_order_by_expr(&mut self) -> Result<OrderByExpr, ParserError>

Parse an ORDER BY sub-expression optionally followed by ASC or DESC.