* Also export ValidOnClauseValue
This is a constraint on `on`, but not exported, so you have to go into the source to see what it does. Exporting makes this easier.
* add to ChangeLog and bumped version
* Simplify ToFromT. Converted most closed type families to be associated type families with the exception of IsLateral, Nullable and the two new FromOnClause and FromCrossJoin type families that handle the overlaps instead of ToFromT
* Use type families instead of empty classes
* It's not possible to expand a closed type family.
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
* Make ToAliasT and ToAliasReferenceT associated types of the corresponding classes
* Update changelog
* Remove ToAliasT and ToAliasReferenceT
* Update changelog and deprecate type families instead of deleting them
* Apply suggestions from code review
Co-authored-by: Ben Levy <benjaminlevy007@gmail.com>
Co-authored-by: Ben Levy <benjaminlevy007@gmail.com>
* Initial attempt at Lateral joins
* Fix lateral queries for Inner and Left joins. Remove for Full and Right as this is apparently illegal(who knew). Add TypeError on Full and Right joins. Update on clause to use a custom constraint instead of relying on ToFrom.
* Fix typo leading to erroneous ToFrom instance
* Implement non-recursive CTE's
* add withRecursive; cleanup whitespace
* Fix multiple recursive CTEs. Apparently the spec just wants RECURSIVE if any of the queries are recursive.
* Add test to verify that a CTE can reference a previously defined CTE
* Update with/Recursive to return an element of a from clause to allow for joins against CTEs
* Modify set operations to use a custom data type + typeclass + typefamily to allow direct use of SqlQuery a in set operation and to allow recursive cte's to unify syntax with SqlSetOperation. Added lowercase names for set operations. If we can migrate off the constructor names we may be able to simplify the implementation.
* Fixed haddock documentation issue from v3.3.4.0 and added documentation
for new features introduced by v3.4.0.0
* fixed comments that were changed while debugging haddock build
* Cleanup formatting in From per PR. Cleanup ValidOnClause, added documentation and reduced the number of instances
* Update src/Database/Esqueleto/Experimental.hs
Co-authored-by: charukiewicz <charukiewicz@protonmail.com>
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
* Fix issue with extra characters. Extra parens in valueList caused issues in mysql. Extra backticks in value reference names
* update changelog and bump version number
* Fix issue caused by toAliasReference failing to reindex an alias reference by its new alias source
* Add support for SqlExpr (Maybe (Entity a))) to aliasing in Experimental. Fix#193
* Update changelog with new PR name. Fix name shadowing in test.
* Fix binary operations(i.e. ==.) on aliased values.
* no need for version bump since 3.3.3.3 hasnt been released yet
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
* Add new SetOperation constructor for parenthesized query. Automatically detect when parentheses are needed on SelectQuery usage (only works for MySQL).
* Add Parens to SelectQueryP and create a pattern synonym for SelectQuery. SelectQueryP is hidden as end users should only be using SelectQuery.
* Document isNothing
I have two goals with this documentation:
1. Surface how to do `IS NOT NULL`. This PR makes a search for that string turn up a result, and directs you to combine `isNothing` with `not_`.
2. Documents a major gotcha where behavior between Persistent and Esqueleto is different. I haven't tested this in awhile, but we run into this gotcha occassionally, so I'm pretty confident it's still an issue.
* ..
* ..
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
* Test and further document ToBaseId
My coworker Lev was adding this typeclass to our codebase and we hadn't used it before. I added a little more documentation that I think would help clarify things, particularly what the point of the witness function was. More importantly I added a test for this typeclass.
* 3.3.3.2
* It works?
* Add multiple return values back in
* Allow order by alias
* Support groupBy and count, Returning value from a fromQuery now will make it into an alias
* Eliminate Alias type, TODO: finish implementing all the functions on Value for the alias constructors
* Add entity support to subqueries
* Cleanup duplication; Cleanup warnings and finish implementing all the cases for aliased values and entities.
* Cleanup fromQuery and add comments
* Modify EValueReference to support aliased entity fields instead of having to use opaque ERaw in field access
* Implement SQL Set Operations
* Add test to show novel use of fromQuery
* Cleanup unsafe case statements
* Add type annotations to helper queries to satisfy the typechecker on older GHC
* New syntax for joins, using placeholder names with ' in them to avoid name conflict with existing join types.
New api properly enforces Maybe on outer joins and requires an on clause for all joins in their construction.
* Add some more test queries using the new syntax
* Add test to verify that delete works with the new syntax
* Add cross join and implicit cross join using comma examples to test code for new from syntax
* Comment out use of CrossJoin in common tests since postgres cant handle it with the current implementation of the CrossJoin kind
* Add typeclass machinery to support the use of the old Join data types used in the existing from clause
* Fix bug with CrossJoin and add on_ syntax sugar
* move new from syntax into Database.Esqueleto.Experimental
* Merge subqueries and unions with the new join syntax, they all seem to play nicely together
* Cleanup somehow copies of ToAlias ended up staying in Internal and a swp file made it in to the branch.
* Fix compilation errors
* Swith tuple to using a TypeOperator
* Make operator only 2 characters
* added up to 8-tuple instances for ToMaybe, ToAlias, and ToAliasReference
* Add compiler error tests for new syntax to support making better errors
* Use closed data families to allow for catching missing on statements in joins.
* Convert ToAliasReferenceT to be a closed type family matching the other classes in the Experimental module
* added Esqueleto.Experimental documentation: added introduction and several examples of old vs. new syntax
* added more usage examples to module introduction; added documentation to SqlSetOperation, From, on, from, and (:&)
* Update (^.) to only treat natural keys with more than one component as ECompositeKey. Fixes#176.
* Update article metadata test to ensure the correct response was being returned instead of just check if an exception was thrown
* Add article metadata to cleanDB before deleting all articles to fix foreign key constraint errors
* Bump version number and add changelog entry
* Fix issue with ToMaybeT for Values, Maybe was going in the wrong place compared to the rest of the library. Add test to prove that Left joining into a subquery that returns a maybe flattens the maybe properly to avoid needing to call joinV.
* Fix common test for postgres, needed to add dogCounts to the group by since postgres is strict on only agregates for non grouped columns; I really need to set up a local postgresql
* Revert ToFromT changes. Only accept functions that return a SqlExpr (Value Bool) in ToFromT
* escaped use of '@' in TypeApplications in documentation
* Add more specific type signature to `on`
per parsonsmatt review suggestion. Improves type inference significantly.
Co-Authored-By: Matt Parsons <parsonsmatt@gmail.com>
Co-authored-by: charukiewicz <c.charukiewicz@gmail.com>
Co-authored-by: Matt Parsons <parsonsmatt@gmail.com>
* Update (^.) to only treat natural keys with more than one component as ECompositeKey. Fixes#176.
* Update article metadata test to ensure the correct response was being returned instead of just check if an exception was thrown
* Add article metadata to cleanDB before deleting all articles to fix foreign key constraint errors
* Bump version number and add changelog entry
