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Module variadic_left
mz_sql
0.0.0
Module variadic_
left
Module Items
Functions
In mz_
sql::
plan::
lowering
mz_sql
::
plan
::
lowering
Module
variadic_
left
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Source
Functions
ยง
attempt_
left_
join_
magic
๐
Attempt to render a stack of left joins as an inner join against โenrichedโ right relations.
decompose_
left_
to_
right_
equations
๐
If
predicate
can be decomposed as any number of
col(x) = col(y)
expressions anded together, return them. In order to only find
useful
equations, one column must be
< lhs_cutoff
and one must be
>= lhs_cutoff
.
recompose_
equations
๐
Turns column equation into idiomatic Rust equation, where nulls equate.