(
&self,
id: Ident,
schema: &DFSchema,
planner_context: &mut PlannerContext,
)
| 32 | |
| 33 | impl<S: ContextProvider> SqlToRel<'_, S> { |
| 34 | pub(super) fn sql_identifier_to_expr( |
| 35 | &self, |
| 36 | id: Ident, |
| 37 | schema: &DFSchema, |
| 38 | planner_context: &mut PlannerContext, |
| 39 | ) -> Result<Expr> { |
| 40 | let id_span = id.span; |
| 41 | if id.value.starts_with('@') && id.quote_style.is_none() { |
| 42 | // TODO: figure out if ScalarVariables should be insensitive. |
| 43 | let var_names = vec![id.value]; |
| 44 | let field = self |
| 45 | .context_provider |
| 46 | .get_variable_field(&var_names) |
| 47 | .or_else(|| { |
| 48 | self.context_provider |
| 49 | .get_variable_type(&var_names) |
| 50 | .map(|ty| ty.into_nullable_field_ref()) |
| 51 | }) |
| 52 | .ok_or_else(|| { |
| 53 | plan_datafusion_err!("variable {var_names:?} has no type information") |
| 54 | })?; |
| 55 | Ok(Expr::ScalarVariable(field, var_names)) |
| 56 | } else { |
| 57 | // Don't use `col()` here because it will try to |
| 58 | // interpret names with '.' as if they were |
| 59 | // compound identifiers, but this is not a compound |
| 60 | // identifier. (e.g. it is "foo.bar" not foo.bar) |
| 61 | let normalize_ident = self.ident_normalizer.normalize(id); |
| 62 | |
| 63 | // lambdas parameters have higher precedence |
| 64 | if let Some(field) = planner_context.lambda_parameters().get(&normalize_ident) |
| 65 | { |
| 66 | let mut lambda_var = |
| 67 | LambdaVariable::new(normalize_ident, Some(Arc::clone(field))); |
| 68 | if self.options.collect_spans |
| 69 | && let Some(span) = Span::try_from_sqlparser_span(id_span) |
| 70 | { |
| 71 | lambda_var.spans_mut().add_span(span); |
| 72 | } |
| 73 | return Ok(Expr::LambdaVariable(lambda_var)); |
| 74 | } |
| 75 | |
| 76 | // Check for qualified field with unqualified name |
| 77 | if let Ok((qualifier, _)) = |
| 78 | schema.qualified_field_with_unqualified_name(normalize_ident.as_str()) |
| 79 | { |
| 80 | let mut column = Column::new( |
| 81 | qualifier.filter(|q| q.table() != UNNAMED_TABLE).cloned(), |
| 82 | normalize_ident, |
| 83 | ); |
| 84 | if self.options.collect_spans |
| 85 | && let Some(span) = Span::try_from_sqlparser_span(id_span) |
| 86 | { |
| 87 | column.spans_mut().add_span(span); |
| 88 | } |
| 89 | return Ok(Expr::Column(column)); |
| 90 | } |
| 91 |
no test coverage detected