What does "~>" mean in terraform required_providers version?
Nov 13, 2022 · I am tring to understand how version in Terraform work. For example this demo in the Terraform doc: terraform { required_providers { mycloud = { source = "mycorp/mycloud"
In c# what does 'where T : class' mean? - Stack Overflow
Dec 7, 2012 · Interface constraint (where T : IMyInterface): This ensures that the type argument must implement a specific interface. Base class constraint (where T : MyBaseClass): This ensures that the …
What does "where T : class, new ()" mean? - Stack Overflow
Oct 2, 2015 · 6 where (C# Reference) The new () Constraint lets the compiler know that any type argument supplied must have an accessible parameterless--or default-- constructor So it should be, …
Why does SQL Server keep creating a DF constraint?
I know how to drop the constraint, but the constraint's name changes everytime (the suffix changes). I either need SQL Server to stop creating this randomly-named constraint OR I need to be able to …
sql - WITH CHECK ADD CONSTRAINT followed by CHECK …
Feb 10, 2009 · The first syntax is redundant - the WITH CHECK is default for new constraints, and the constraint is turned on by default as well. This syntax is generated by the SQL management studio …
database: primary key, Clustered or NonClustered
Dec 20, 2016 · CONSTRAINT pk_UserID PRIMARY KEY CLUSTERED (U_Id) You can only have the table data physicality ordered by one of the indexes, and by default that index is the one used for the …
Does MySQL ignore null values on unique constraints?
Sep 14, 2010 · A unique constraint is satisfied if and only if no two rows in a table have the same non-null values in the unique columns This statement can have two interpretations as : No two rows can …
What does it mean by integrity constraint violated - parent key not ...
Apr 15, 2021 · Otherwise it will fail due to integrity constraint violation. Summary Since you try to perform an insert on a child table, your problem is equivalent to Example 4, that is, you attempt to insert a …
mysql - Does a UNIQUE constraint automatically create an INDEX on …
Mar 19, 2012 · The accepted answer describes how a unique index automatically creates a unique constraint. For anyone else wondering, automatic creation works the other way too, because the …
Meaning of tilde-greater-than (~>) in version requirement?
The RubyGems manual calls this a pessimistic version constraint. Assume you have specified an n-part version number, e.g. 1.3 (2-part) or 3.5.6.2 (4-part) as the constraint. Then, in order to fulfill the …