This commit makes it so that given `INSERT INTO foo(<cursor1>) SELECT <cursor2> FROM bar;`, we suggest `bar` columns for `<cursor2>` and `foo` columns for `<cursor1>`. Previous behaviour is sugggesting columns from both tables in both cases.
When the database URL contains a port, uri.port is (at least in Python 2.7.6) an integer, not a string, so urlparse.unquote chokes on it.
Fixes issue #536, but is probably worth verifying on Python 3.
If config.main.generate_aliases is True, for `SELECT * FROM `, we suggest `FooBar FB` and `foo_bar fb` instead of `FooBar` and `foo_bar`, respectively.
To be able to add a test, I had to add support for testing with different settings, which meant I could also add tests for casing.
There are two non-obvious changes that I can think of:
1. The lexical sorting of matches is modified so as to sort spaces and underscores before letters and to sort case-insensitively. This is so that e.g `Foob F` comes before 'FooBar FB' when `foob` is input.
2. We now suggest `some_func()` instead of `some_func` (because suggesting `some_func sf` didn't make any sense).
When self-joining a table with an FK to or from some other table, we got a false FK-join suggestion for that column.
There was also a problem with quoted tables not being quoted in the join condition.
And there were a couple of problems when trying to join a non-existent table or using a non-existent qualifier (`SELECT * FROM Foo JOIN Bar ON Meow.`).
I also rewrote get_join_condition_matches a bit in the process, hopefully making it a bit simpler.
If we have the input `SELECT * FROM Foo JOIN `, we now suggest `Foo Foo2 ON Foo2.ParentID = Foo.ID` (given the appropriate casing file and FK).
There were also some problems with quoted tables and with the casing of table aliases, which are now fixed.
I also made a few cosmetic changes to get_join_matches (pgcompleter.py) just to make it a bit easier to work with.
This is based on my previous work on suggesting join conditions, but here instead we suggest the whole join. What we do is simply check all the tables in the statement for FK relationships and then suggest joins based on those. I think this will not only save key presses, but also be rather useful when exploring an unfamiliar (part of a) database.
There's one non-obvious change in this commit (that I can think of): When calling **sqlcompletion.text_before_cursor**, the **text_before_cursor** argument now no longer includes **word_before_cursor**. This is because for 'SELECT * FROM foo JOIN bar<cursor>', we would otherwise consider the table **bar** already included in the statement and thus suggest e.g. 'baz on baz.barid = bar.barid'.
This adds support for defining the casing to be used in completions (for unquoted names). The casing is determined by the casing file, which consists of a \n-separated list of names using the preferred casing. This file can either be populated manually or created automatically (based on usage in SQL/PLPGSQL functions), with a config setting.
Getting the parameters from proargnames, proallargtypes and proargmodes instead of from parsing the arg_list string simplifies FunctionMetadata quite a bit.
I also made the ColumnMetadata for table/view columns use the same format for the type (i.e. regtype instead of typname). This means we now get join-condition suggestions for joining tables/views to functions, which didn't work before.
And add a setting to use alphabetic order instead.
We simply get the columns from the database in the canonical order, and then sort them if the user has opted for alphabetic order.
The user types 'SELECT * FROM parenttable p JOIN childtable c on '. We then suggest ['c.parenttableid = p.parenttableid', 'c.createdby = p.createdby', ...] as completions.
The suggestions are FK matches first, then name matches for int columns, then name matches for other columns, sorted by proximity from the cursor to the other table.
Some changes:
For "JOIN Foo USING(<cursor>)", now only columns present in Foo are suggested.
For all suggestions after 'ON', now only the tables before the cursor are considered.
meta[reltype]][relname] goes from being a list of columns to being an OrderedDict {column_name:ColumnMetadata}, where the ColumnMetaData contains the column's name, data type and a list of FKs involving the column. This entails modification of a number of functions dealing with columns.
