Struct Planner 

pub struct Planner { /* private fields */ }

Implementations

impl Planner

pub fn new(schema: SchemaRef) -> Self

pub fn with_enable_relations(self, enable_relations: bool) -> Self

If passed with true, then the first identifier in column reference is parsed as the relation. For example, table.field.inner will be read as the nested field field.inner (inner on struct field field) on the table relation. If false (the default), then no relations are used and all identifiers are assumed to be a nested column path.

pub fn parse_filter(&self, filter: &str) -> Result<Expr>

Create Logical Expr from a SQL filter clause.

Note: the returned expression must be passed through [optimize_expr()] before being passed to [create_physical_expr()].

pub fn parse_expr(&self, expr: &str) -> Result<Expr>

Create Logical Expr from a SQL expression.

Note: the returned expression must be passed through [optimize_filter()] before being passed to [create_physical_expr()].

pub fn optimize_expr(&self, expr: Expr) -> Result<Expr>

Optimize the filter expression and coerce data types.

pub fn create_physical_expr(&self, expr: &Expr) -> Result<Arc<dyn PhysicalExpr>>

Create the PhysicalExpr from a logical Expr

pub fn column_names_in_expr(expr: &Expr) -> Vec<String>

Collect the columns in the expression.

The columns are returned in sorted order.

If the expr refers to nested columns these will be returned as dotted paths (x.y.z)