SQL Server 2019 preview builds on previous releases to grow SQL Server as a platform that gives you choices of development languages, data types, on-premises or cloud, and operating systems. This article summarizes what is new for SQL Server 2019. 

create trigger Prevent_AlterDrop
on database
for drop_table, alter_table
as
  print 'table can not be dropped or altered'
  rollback transaction

  CREATE TABLE ddl_log 
  (
     EventType nvarchar(100), 
 PostTime datetime,
 SPID nvarchar(100),
 ServerName nvarchar(100),
 LoginName nvarchar(100),
 UserName  nvarchar(100),
 DatabaseName  nvarchar(100),
 ObjectName  nvarchar(100),
 ObjectType  nvarchar(100),
 DefaultSchema nvarchar(100),
 [SID]  nvarchar(100),
 TSQLCommand nvarchar(2000));

CREATE TRIGGER [Log] ON DATABASE
 FOR DDL_DATABASE_LEVEL_EVENTS
 AS
 DECLARE @data XML
 SET @data = EVENTDATA()
 INSERT INTO ddl_log
 VALUES (
   @data.value('(/EVENT_INSTANCE/EventType)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/PostTime)[1]',   'datetime'),
   @data.value('(/EVENT_INSTANCE/SPID)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/ServerName)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/LoginName)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/UserName)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/DatabaseName)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/ObjectName)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/ObjectType)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/DefaultSchema)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/SID)[1]',   'nvarchar(100)'),
   @data.value('(/EVENT_INSTANCE/TSQLCommand)[1]',   'nvarchar(2000)'));

Server Level

DDL_SERVER_LEVEL_EVENTS

 DDL_LINKED_SERVER_EVENTS

 DDL_LINKED_SERVER_LOGIN_EVENTS

 DDL_REMOTE_SERVER_EVENTS

 DDL_EXTENDED_PROCEDURE_EVENTS

 DDL_MESSAGE_EVENTS

 DDL_ENDPOINT_EVENTS

 DDL_SERVER_SECURITY_EVENTS

 DDL_LOGIN_EVENTS

 DDL_GDR_SERVER_EVENTS

 DDL_AUTHORIZATION_SERVER_EVENT Database Level

Database Level

DDL_TABLE_VIEW_EVENTS

DDL_TABLE-EVENTS

DDL_VIEW_EVENTS

DDL_INDEX_EVENTS

DDL_STATISTICS_EVENTS

DDL_DATABASE_SECURITY_EVENTS

DDL_CERTIFICATE_EVENTS

DDL_USER_EVENTS

DDL_ROLE_EVENTS

DDL_APPLICATION_ROLE_EVENTS

DDL_SCHEMA_EVENTS

DDL_GDR_DATABASE_EVENTS

DDL_AUTHORIZATION_DATABASE_EVENTS

DDL_FUNCTION_EVENTS

DDL_PROCEDUER_EVENTS

DDL_TRIGGER_EVENTS

DDL_PARTITION_EVENTS

DDL_PARTITION_FUNCTION_EVENTS

DDL_PARTITION_SCHEME_EVENTS

DDL_SSB_EVENTS

DDL_MESSAGE_TYPE_EVENTS

DDL_CONTRACT_EVENTS

DDL_QUEUE_EVENTS

DDL_SERVER_EVENTS

DDL_ROUTE_EVENTS

DDL_REMOTE_SERVICE_BINDING_EVENTS

DDL_XML_SCHEMA_COLEECTION_EVENTS

DDL_FULLTEXT_CATALOG_EVENTS

DDL_DEFAULT_EVENTS

DDL_EXTENDED_PROPERTY_EVENTS

DDL_PLAN_GUIDE_EVENTS

DDL_RULE_EVENTS

DDL_SYNONYM_EVENTS

DDL_EVENT_NOTIFICATION_EVENTS

DDL_ASSEMBLY_EVENTS

DDL_TYPE_EVENTS

CREATE TABLE ftsXML(
id INT IDENTITY PRIMARY KEY,
doc XML NULL
CONSTRAINT UQ_FTS_Id UNIQUE(id)
)
GO
INSERT ftsXML VALUES('
<book>
<title>Sample book title 1</title>
<author>Vahid</author>
<chapter ID="1">
<title>Chapter 1</title>
<content>
"The quick brown fox jumps over the lazy dog" is an English-language 
pangram—a phrase that contains all of the letters of the English alphabet. 
It has been used to test typewriters and computer keyboards, and in other 
applications involving all of the letters in the English alphabet. Owing to its 
brevity and coherence, it has become widely known.
</content>
</chapter>
<chapter ID="2">
<title>Chapter 2</title>
<content>
In publishing and graphic design, lorem ipsum is a placeholder text commonly used 
to demonstrate the graphic elements of a document or visual presentation. 
By replacing the distraction of meaningful content with filler text of scrambled 
Latin it allows viewers to focus on graphical elements such as font, typography, 
and layout.
</content>
</chapter>
</book>
')

INSERT ftsXML VALUES('
<book>
<title>Sample book title 2</title>
<author>Farid</author>
<chapter ID="1">
<title>Chapter 1</title>
<content>
The original passage began: Neque porro quisquam est qui dolorem ipsum quia dolor sit 
amet consectetur adipisci velit 
</content>
</chapter>
<chapter ID="2">
<title>Chapter 2</title>
<content>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor 
incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis 
nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore 
eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, 
sunt in culpa qui officia deserunt mollit anim id est laborum.
</content>
</chapter>
</book>
')
GO

 CREATE FULLTEXT CATALOG FT_CATALOG
GO
CREATE FULLTEXT INDEX ON ftsXML([doc])
KEY INDEX UQ_FTS_Id ON ([FT_CATALOG], FILEGROUP [PRIMARY])
GO

 SQL Server encountered error 0x80070422 while communicating with full-text filter daemon host (FDHost) process.

 sp_fulltext_service 'restart_all_fdhosts'
go

 -- استفاده از ایکس کوئری برای جستجو در نتایج حاصل
SELECT T.doc.value('(/book/title)[1]', 'varchar(100)') AS title
FROM
-- استفاده از اف تی اس برای جستجو
(SELECT * FROM ftsXML
WHERE CONTAINS(doc, '"Quick Brown Fox "')) AS T

 SELECT T.doc.value('(/book/title)[1]', 'varchar(100)') AS title
FROM
(SELECT * FROM ftsXML
WHERE CONTAINS(doc, 'FORMSOF (INFLECTIONAL ,"Quick Brown Fox jumped")')) AS T

 SELECT T.doc.value('(/book/title)[1]', 'varchar(100)') AS title
FROM
(SELECT * FROM ftsXML
WHERE CONTAINS(doc, 'quick NEAR fox')) AS T

 SELECT doc.value('(/book/title)[1]', 'varchar(100)') AS title
FROM ftsXML
WHERE doc.exist('/book/chapter/content[contains(., "Quick Brown Fox")]') = 1