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decide_join_sides

uqa_sql::semantics::join_predicates

Function decide_join_sides 

Source 
pub fn decide_join_sides<'a>(
    left: &RowSchema,
    right: &RowSchema,
    lhs: &'a ScalarExpr,
    rhs: &'a ScalarExpr,
) -> Option<(&'a ScalarExpr, &'a ScalarExpr)>
Expand description

Determine the input side of two equality operands from structured schema identities. Planning does not synthesize a sample row, and punctuation in a quoted identifier is never interpreted as a relation boundary.