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All of the major relational databases allow null values in unique key constraints.
As a workaround I could use unique indexes instead of alternate keys, but I would appreciate the semantics of a uniq…
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Text fields can have unique constraints over them.
However, when a Text field is newtype'd, for extra type safety, this facility appears to break:
In Model.hs with GeneralizedNewtypeDeriving:
```
n…
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```
Current behaviour:
UniqueConstraint/PrimaryKeyConstraint contain just the list of columns, we
can not find out sorting order for each column.
Indexes created to enforce such constraints are not …
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Pushing the discussion one step further, we should consider reinterpreting unique "ID" to mean that the same ID with dash/underscores/capitalisation is not allowed, e.g.,
`jdb_2` should block `JDB-…
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Basically when importing systems from EDSM, they come with addresses (as they should), but those addresses don't match up with the data coming in from EDDN. This leads to duplicate system issues.
M…
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This is the opposite behaviour of the gem, but it seems it would be useful to identify instances in which the unique constraint is defined at the database (schema) level, but not specified (eg via `un…
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**Enhancement**
OceanBase CE 3.1.4
mysql> SELECT count(1)
-> FROM information_schema.STATISTICS S
-> WHERE TABLE_SCHEMA='xxxxxxard04db'
-> AND TABLE_NAME='managexxxxxl_05' ;
+---…
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It would be nice to mark a column as unique. Related to that it would be nice to add arbitrary constraint and maybe have some helper function for stuff like unique column.
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Jesse Seldess (jseldess) commented:
PR: https://github.com/cockroachdb/cockroach/pull/57666
From release notes:
> Added a session setting `experimental_enable_unique_without_index_constraints` and …
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I built from scratch the sdk on Fedora. So I used the new Swift 6 Fedora 39 build, made a darwin-tools-linux toolchain with it, then built swift-sdk-darwin with that toolchain and Xcode 16.
Now, I…