Restructure project

Database/Database.Core/scripts/03-crud/02-UserCredential/USP_AddUserCredential.sql

@@ -0,0 +1,33 @@
+CREATE OR ALTER PROCEDURE dbo.USP_AddUserCredential(
+    @UserAccountId uniqueidentifier,
+    @Hash nvarchar(max)
+)
+AS
+BEGIN
+    SET NOCOUNT ON;
+    SET XACT_ABORT ON;
+
+    BEGIN TRANSACTION;
+
+    IF NOT EXISTS (
+        SELECT 1 
+        FROM dbo.UserAccount 
+        WHERE UserAccountID = @UserAccountId
+    )
+        THROW 50001, 'UserAccountID does not exist.', 1;
+    
+    IF EXISTS (
+        SELECT 1 
+        FROM dbo.UserCredential
+        WHERE UserAccountID = @UserAccountId
+    )
+        THROW 50002, 'UserCredential for this UserAccountID already exists.', 1;
+    
+
+    INSERT INTO dbo.UserCredential
+        (UserAccountId, Hash)
+    VALUES 
+        (@UserAccountId, @Hash);
+
+    COMMIT TRANSACTION;
+END;