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Lateral expressions for PostgreSQL #481

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Merged
merged 2 commits into from
Dec 28, 2017
Merged

Lateral expressions for PostgreSQL #481

merged 2 commits into from
Dec 28, 2017

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lautis
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@lautis lautis commented Apr 25, 2017

Support for PostgreSQL lateral expressions. This is treated as an unary function applied to a query expression.

Lateral is a separate function to provide interoperability with aliases and unions. These are also separate node types that wrap SelectStatements. The lateral option would need to be implemented in these nodes separately if lateral was an option of SelectStatement.

When building the query, an alias can be given as an argument. This enables building a lateral query with an table alias without using either Nodes::TableAlias or Nodes::Lateral directly.

Fixes #382.

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Thanks for the pull request, and welcome! The Rails team is excited to review your changes, and you should hear from @rafaelfranca (or someone else) soon.

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Support for PostgreSQL lateral expressions. This is treated as an unary
function applied to a query expression.

Lateral is a separate function to provide interoperability with aliases
and unions. These are also separate node types that wrap
SelectStatements. The lateral option would need to be implemented in
these nodes separately if lateral was an option of SelectStatement.

When building the query, an alias can be given as an argument. This
enables building a lateral query with an table alias without using
either Nodes::TableAlias or Nodes::Lateral directly.
@eric-pigeon
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@rafaelfranca any chance this will get merged?

@tenderlove tenderlove merged commit df2b74b into rails:master Dec 28, 2017
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5 participants