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qualify_columns

polyglot_sql::optimizer::qualify_columns

Function qualify_columns 

Source 
pub fn qualify_columns(
    expression: Expression,
    schema: &dyn Schema,
    options: &QualifyColumnsOptions,
) -> QualifyColumnsResult<Expression>
Expand description

Rewrite SQL AST to have fully qualified columns.

§Example

ⓘ
// SELECT col FROM tbl => SELECT tbl.col AS col FROM tbl

§Arguments

  • expression - Expression to qualify
  • schema - Database schema for column lookup
  • options - Qualification options

§Returns

The qualified expression