-- Create a test table
CREATE TABLE dbo.TestDupes
(
	Id INTEGER NOT NULL PRIMARY KEY CLUSTERED IDENTITY(1,1),
	KeyPart1 INTEGER NOT NULL,
	KeyPart2 INTEGER NOT NULL,
	KeyPart3 INTEGER NOT NULL,
	value1 FLOAT NOT NULL,
	value2 FLOAT NOT NULL
);
GO
 
-- Insert some test data
INSERT INTO dbo.TestDupes
(
	KeyPart1,
	KeyPart2,
	KeyPart3,
	value1,
	value2
)
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5;
GO

TRUNCATE TABLE dbo.TestDupes;
-- Insert some test data
INSERT INTO dbo.TestDupes
(
	KeyPart1,
	KeyPart2,
	KeyPart3,
	value1,
	value2
)
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 5.5, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
SELECT 1, 2, 3, 2.0, 2.5
UNION ALL
-- Group 2 
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 5.5, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 5.5, 2.5
UNION ALL
SELECT 2, 2, 3, 5.5, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5
UNION ALL
SELECT 2, 2, 3, 2.0, 2.5;
GO
 
WITH Dupe_CTE (
			Id, 
			KeyPart1, 
			KeyPart2, 
			KeyPart3, 
			value1, 
			value2, 
			group_num, 
			group_row_num
		)
AS
(
	SELECT Id,
	       KeyPart1,
	       KeyPart2,
	       KeyPart3,
	       value1,
	       value2,
               DENSE_RANK() OVER(ORDER BY KeyPart1, KeyPart2, KeyPart3),
               ROW_NUMBER() OVER(PARTITION BY KeyPart1,
                                          KeyPart2,
                                          KeyPart3
                                 ORDER BY Id)
        FROM dbo.TestDupes
)
SELECT *
FROM Dupe_CTE;

WITH Dupe_CTE (
			Id, 
			KeyPart1, 
			KeyPart2, 
			KeyPart3, 
			value1, 
			value2, 
			group_num, 
			group_row_num
		)
AS
(
	SELECT Id,
		   KeyPart1,
		   KeyPart2,
		   KeyPart3,
		   value1,
		   value2,
           DENSE_RANK() OVER(ORDER BY KeyPart1, KeyPart2, KeyPart3),
           ROW_NUMBER() OVER(PARTITION BY KeyPart1,
                                          KeyPart2,
                                          KeyPart3
                             ORDER BY Id)
           FROM dbo.TestDupes
)
DELETE fg2
FROM Dupe_CTE fg1
INNER JOIN Dupe_CTE fg2
                ON fg1.Group_Num = fg2.Group_Num
                AND fg1.value1 = fg2.value1
                AND fg1.value2 = fg2.value2
WHERE fg1.group_row_num = fg2.group_row_num - 1;

DECLARE @num1 TINYINT = 50, @num2 TINYINT = 75;
 
SELECT @num1 - @num2;

USE test;
 
CREATE TABLE nums
(
	num1 INTEGER UNSIGNED NOT NULL,
	num2 INTEGER UNSIGNED NOT NULL
);
 
INSERT INTO nums
(
	num1,
	num2
)
VALUES
(
	50,
	75
);
 
SELECT num1 - num2
FROM nums;

SET @@SESSION.sql_mode = 'TRADITIONAL,NO_UNSIGNED_SUBTRACTION';
 
SELECT num1 - num2
FROM nums;

CREATE TABLE dbo.Appointments
(
	AppointId INTEGER IDENTITY (1,1) NOT NULL PRIMARY KEY CLUSTERED,
	AppointmentDateTime DATETIME NOT NULL,
	FirstName VARCHAR(50) NOT NULL,
	LastName VARCHAR(50) NOT NULL,
	Reason VARCHAR(50) NULL
);
GO
 
CREATE TABLE AppointmentBands
(
	AppointBandId INTEGER IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
	StartDateTime DATETIME NOT NULL,
	EndDateTime DATETIME NOT NULL
);
GO
 
-- Insert Test Data
INSERT INTO dbo.Appointments
(
	AppointmentDateTime,
	FirstName,
	LastName,
	Reason
)
SELECT '2010-02-18T17:00:00',
	   'Rhys',
	   'Campbell',
	   'Eye Test'
UNION ALL
SELECT '2010-02-23T12:00:00',
	   'John',
	   'Smith',
	   'Ear Test'
UNION ALL
SELECT '2010-02-28T14:00:00',
	   'Frank',
	   'Zappa',
	   'Eye Test';
GO
 
INSERT INTO dbo.AppointmentBands
(
	StartDateTime,
	EndDateTime
)
SELECT '2010-02-18T00:00:00',
	   '2010-02-22T23:59:59'
UNION ALL
SELECT '2010-02-23T00:00:00',
	   '2010-02-27T23:59:59'
UNION ALL
SELECT '2010-02-28T00:00:00',
	   '2010-03-01T23:59:59';

SELECT app.*, band.AppointBandId
FROM dbo.Appointments app
INNER JOIN dbo.AppointmentBands band
	ON app.AppointmentDateTime BETWEEN band.StartDateTime AND band.EndDateTime;

CREATE TABLE Appointments
(
	AppointId INTEGER AUTO_INCREMENT NOT NULL PRIMARY KEY,
	AppointmentDateTime DATETIME NOT NULL,
	FirstName VARCHAR(50) NOT NULL,
	LastName VARCHAR(50) NOT NULL,
	Reason VARCHAR(50) NULL
);
 
CREATE TABLE AppointmentBands
(
	AppointBandId INTEGER AUTO_INCREMENT NOT NULL PRIMARY KEY,
	StartDateTime DATETIME NOT NULL,
	EndDateTime DATETIME NOT NULL
);
 
-- Insert Test Data
INSERT INTO Appointments
(
	AppointmentDateTime,
	FirstName,
	LastName,
	Reason
)
SELECT '2010-02-18T17:00:00',
	   'Rhys',
	   'Campbell',
	   'Eye Test'
UNION ALL
SELECT '2010-02-23T12:00:00',
	   'John',
	   'Smith',
	   'Ear Test'
UNION ALL
SELECT '2010-02-28T14:00:00',
	   'Frank',
	   'Zappa',
	   'Eye Test';
 
INSERT INTO AppointmentBands
(
	StartDateTime,
	EndDateTime
)
SELECT '2010-02-18T00:00:00',
	   '2010-02-22T23:59:59'
UNION ALL
SELECT '2010-02-23T00:00:00',
	   '2010-02-27T23:59:59'
UNION ALL
SELECT '2010-02-28T00:00:00',
	   '2010-03-01T23:59:59';

SELECT app.*, band.AppointBandId
FROM Appointments app
INNER JOIN AppointmentBands band
	ON app.AppointmentDateTime BETWEEN band.StartDateTime AND band.EndDateTime;

CREATE TABLE [dbo].[Table_1]
(
	[id] [int] IDENTITY(1,1) PRIMARY KEY NOT NULL,
	[test] [nchar](10) NOT NULL
);

INSERT INTO dbo.Table_1
(
	test
)
SELECT 'One'
UNION ALL
SELECT 'Two'
UNION ALL
SELECT 'Three'
UNION ALL
SELECT 'Four'
UNION ALL
SELECT 'Five';

CREATE SCHEMA Test;

CREATE VIEW Test.Table_1
AS
	SELECT Id, Test
	FROM Table_1;

ALTER VIEW Test.Table_1
AS
	SELECT Id, Test
	FROM dbo.Table_1;

-- SQL Server 2005 /2008
CREATE TABLE #databases
(
 DATABASE_NAME VARCHAR(50),
 DATABASE_SIZE FLOAT,
 REMARKS VARCHAR(100)
)
 
INSERT #Databases EXEC ('EXEC sp_databases');
 
SELECT @@SERVERNAME AS SERVER_NAME,
    DATABASE_NAME,
    DATABASE_SIZE AS '(KB)',
    ROUND(DATABASE_SIZE / 1024, 2) AS '(MB)',
    ROUND((DATABASE_SIZE / 1024) / 1024, 2) AS '(GB)',
    REMARKS
FROM #databases;
 
DROP TABLE #databases;

-- SQL 2000
SELECT @@SERVERNAME AS SERVER_NAME,
    db.name AS DATABASE_NAME,
    SUM(size * 8) AS '(KB)',
    ROUND(SUM(CAST((size * 8) AS FLOAT)) / 1024, 2) AS '(MB)',
    ROUND(((SUM(CAST((size * 8) AS FLOAT)) / 1024) / 1024), 2) AS '(GB)'
FROM sysaltfiles files
INNER JOIN sysdatabases db
 ON db.dbid = files.dbid
GROUP BY db.name

-- @@hostname variable introduced in MySQL 5.0.38
SELECT @@hostname,
       TABLE_SCHEMA AS `DATABASE`,
       ROUND(SUM(data_length + index_length +data_free) / 1024, 2) '(KB)',
       ROUND(SUM(data_length + index_length +data_free)/ 1024 / 1024, 2) '(MB)',
       ROUND(SUM(data_length + index_length +data_free)/ 1024 / 1024 /1024, 2) '(GB)'
FROM information_schema.TABLES
GROUP BY TABLE_SCHEMA;

-- This function will provide the computed column definition
CREATE FUNCTION udf_extractPersonCode
(
	@input VARCHAR(100)
)
RETURNS CHAR(7)
WITH SCHEMABINDING
AS
BEGIN
 
	DECLARE @extractedPersonCode CHAR(7) = NULL;
 
	IF(PATINDEX('%[A-Z][0-9][0-9][0-9][0-9][0-9][0-9]%', @input) > 0)
	BEGIN
		SET @extractedPersonCode = SUBSTRING(@input, PATINDEX('%[A-Z][0-9][0-9][0-9][0-9][0-9][0-9]%', @input), 7);
	END
 
	RETURN @extractedPersonCode;
 
END
GO

CREATE TABLE dbo.ComputedColTable
(
	Id INTEGER IDENTITY(1, 1) NOT NULL PRIMARY KEY CLUSTERED,
	FirstName VARCHAR(30) NOT NULL,
	LastName VARCHAR(30) NOT NULL,
	PersonCode CHAR(7) NULL,
	Notes VARCHAR(100) NULL,
	ExtractedPersonCode AS dbo.udf_extractPersonCode(Notes) PERSISTED
);

-- Insert some sample data into our table
INSERT INTO dbo.ComputedColTable
(
	FirstName,
	LastName,
	PersonCode,
	Notes
)
VALUES
(
	'Rhys',
	'Campbell',
	'C123456', -- Correctly entered PersonCode
	NULL
),
(
	'John',
	'Smith',
	NULL, -- No Person Code here
	'Person code = C654321 New Customer' -- PersonCode put in notes
),
(
	'Joe',
	'Bloggs',
	NULL, -- No Person Code here
	'Visited London store C654320 customer code.' -- PersonCode put in notes
);

-- Select data
SELECT *
FROM dbo.ComputedColTable

-- Enable fulltext searching on the database
USE database1;
GO
EXEC sp_fulltext_database 'enable';
GO
-- Create a fulltext catalog
CREATE FULLTEXT CATALOG ft_catalog_database1
GO

-- Create a table to contain the poems
CREATE TABLE poems
(
	id INTEGER NOT NULL IDENTITY(1,1) PRIMARY KEY,
	author VARCHAR(50) NOT NULL,
	title VARCHAR(100) NOT NULL,
	poem TEXT NOT NULL
);

-- Insert some data
INSERT INTO poems
(
	author,
	title,
	poem
)
SELECT
 
	'Johann Wolfgang von Goethe',
	'Night Thoughts',
	'Stars, you are unfortunate, I pity you,
Beautiful as you are, shining in your glory,
Who guide seafaring men through stress and peril
And have no recompense from gods or mortals,
Love you do not, nor do you know what love is.
Hours that are aeons urgently conducting
Your figures in a dance through the vast heaven,
What journey have you ended in this moment,
Since lingering in the arms of my beloved
I lost all memory of you and midnight.'
UNION ALL
SELECT
	'Nikki Giovanni',
	'I Love You',
	'I love you
because the Earth turns round the sun
because the North wind blows north
sometimes
because the Pope is Catholic
and most Rabbis Jewish
because winters flow into springs
and the air clears after a storm'
UNION ALL
SELECT
	'Lord Byron',
	'She Walks In Beauty',
	'She walks in beauty, like the night
Of cloudless climes and starry skies;
And all that''s best of dark and bright
Meet in her aspect and her eyes:
Thus mellow''d to that tender light
Which heaven to gaudy day denies.
 
One shade more, one ray less,
Had half impair''d the nameless grace
Which waves in every raven tress,
Or softly lightens o''er her face;
Where thoughts serenely sweet express
How pure, how dear their dwelling place.
 
And on that cheek, and o''er that brow
So soft, so calm, yet eloquent,
The smiles that win, the tints that glow,
But tell of days in goodness spent,
A mind at peace with all below,
A heart whose love is innocent!'
UNION ALL
SELECT
	'Christopher Marlowe',
	'Come Live With Me',
	'Come live with me, and be my love;
And we will all the pleasures prove
That valleys, groves, hills, and fields,
Woods or steepy mountain yields.'
UNION ALL
SELECT
	'Thomas Campbell',
	'Freedom and Love',
	'How delicious is the winning
Of a kiss at love''s beginning,
When two mutual hearts are sighing
For the knot there''s no untying!
 
Yet remember, ''midst your wooing
Love has bliss, but Love has ruing;
Other smiles may make you fickle,
Tears for other charms may trickle.
 
Love he comes and Love he tarries
Just as fate or fancy carries;
Longest stays, when sorest chidden;
Laughs and flies, when press''d and bidden.
 
Bind the sea to slumber stilly,
Bind its odour to the lily,
Bind the aspen ne''er to quiver,
Then bind Love to last for ever.
 
Love''s a fire that needs renewal
Of fresh beauty for its fuel;
Love''s wing moults when caged and captured,
Only free, he soars enraptured.
 
Can you keep the bees from ranging,
Or the ringdove''s neck from changing?
No! nor fetter''d Love from dying
In the knot there''s no untying.';

-- Create a fulltext index on title and poem
CREATE FULLTEXT INDEX ON database1.dbo.poems
(
	title
	Language 0X0,
	poem
	Language 0X0
)
KEY INDEX PK__poems__00551192 ON ft_catalog_database1
WITH CHANGE_TRACKING AUTO;

SELECT * 
FROM poems
WHERE CONTAINS(title, '"I love you"');

SELECT *
FROM CONTAINSTABLE(dbo.poems, *, '"I love you"') AS t1
JOIN dbo.poems AS t2
	ON t1.[KEY] = t2.id
ORDER BY t1.[RANK] DESC;

ALTER TABLE TestTable COMMENT 'Data supplied by ACME Corp.';

-- View table comments for the current database
SELECT TABLE_NAME, TABLE_COMMENT
FROM information_schema.tables
WHERE TABLE_SCHEMA = DATABASE();

EXEC sys.sp_addextendedproperty @name=N'Description', 
				@value=N'hello table Customer',
				@level0type=N'SCHEMA', 
				@level0name=N'dbo', 
				@level1type=N'TABLE', 
				@level1name=N'Customer';

-- Table comments
SELECT objtype, objname, name, value
FROM fn_listextendedproperty
(
	NULL, 
	'schema', 
	'dbo', 
	'table', 
	default, 
	NULL, 
	NULL
);
GO

SELECT TABLE_SCHEMA, TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE';

-- Generate T_SQL to add extended properties to all tables
-- in temp_table_comments
SELECT 'EXEC sys.sp_addextendedproperty @name=N''TABLE_COMMENT'', 
					@value=N''' + COMMENT + ''',
					@level0type=N''SCHEMA'', 
					@level0name=N''' + TABLE_SCHEMA + ''',
					@level1type=N''TABLE'', 
					@level1name=N''' + TABLE_NAME + ''';'
FROM temp_table_comments;

-- Table comments for AdventureWorks
-- Sales schema
SELECT objtype, objname, name, value
FROM fn_listextendedproperty
(
	NULL, 
	'schema', 
	'Sales', 
	'table', 
	NULL, 
	NULL, 
	NULL
)
WHERE [name] = 'TABLE_COMMENT'
GO

-- Create first database
CREATE DATABASE database1 COLLATE Latin1_General_CI_AS;
GO
-- Create second database
CREATE DATABASE database2 COLLATE SQL_Latin1_General_Pref_CP850_CI_AS;
GO
 
USE database1;
GO
-- Create Customer table in database1
CREATE TABLE Customer
(
	CustID INTEGER NOT NULL IDENTITY(1, 1) PRIMARY KEY CLUSTERED,
	FirstName VARCHAR(30) NOT NULL,
	LastName VARCHAR(30) NOT NULL,
	DOB DATETIME NOT NULL,
	StartDate DATETIME NOT NULL DEFAULT GETDATE()
); 
GO
USE database2;
GO
-- Create Customer table in database2
CREATE TABLE Customer
(
	CustID INTEGER NOT NULL IDENTITY(1, 1) PRIMARY KEY CLUSTERED,
	FirstName VARCHAR(30) NOT NULL,
	LastName VARCHAR(30) NOT NULL,
	DOB DATETIME NOT NULL,
	StartDate DATETIME NOT NULL DEFAULT GETDATE()
); 
GO
 
USE database1;
GO
-- Insert test data
INSERT INTO dbo.Customer
(
	FirstName,
	LastName,
	DOB
)
SELECT 'Joe', 'Bloggs', '1975-01-01 00:00:00'
UNION ALL
SELECT'Dave', 'Smith', '1977-10-11 00:00:00'
UNION ALL
SELECT'Fred', 'Bloggs', '1965-11-28 00:00:00'
UNION ALL
SELECT'Sue', 'Smith', '1974-06-17 00:00:00'
UNION ALL
SELECT 'Steve', 'Smith', '1981-07-07 00:00:00';
GO
USE database2;
GO
-- Insert test data
INSERT INTO dbo.Customer
(
	FirstName,
	LastName,
	DOB
)
SELECT 'Joe', 'Bloggs', '1975-01-01 00:00:00'
UNION ALL
SELECT'Dave', 'Smith', '1977-10-11 00:00:00'
UNION ALL
SELECT'Fred', 'Bloggs', '1965-11-28 00:00:00'
UNION ALL
SELECT'Sue', 'Smith', '1974-06-17 00:00:00'
UNION ALL
SELECT 'Steve', 'Smith', '1981-07-07 00:00:00';
GO

-- Cross-database query causing the collation conflict
SELECT *
FROM dbo.Customer c1
INNER JOIN database1.dbo.Customer AS c2
	ON c1.FirstName = c2.FirstName
AND c1.LastName = c2.LastName;

-- Set database2 to the same collation as database1
ALTER DATABASE database2 COLLATE Latin1_General_CI_AS;
-- Change VARCHAR columns on our existing tables
ALTER TABLE Customer ALTER COLUMN FirstName VARCHAR(30) COLLATE Latin1_General_CI_AS;
ALTER TABLE Customer ALTER COLUMN LastName VARCHAR(30) COLLATE Latin1_General_CI_AS;

-- Using COLLATE DATABASE_DEFAULT
SELECT *
FROM dbo.Customer c1
INNER JOIN database1.dbo.Customer AS c2
	ON c1.FirstName = c2.FirstName COLLATE DATABASE_DEFAULT
AND c1.LastName = c2.LastName COLLATE DATABASE_DEFAULT;

DELIMITER $$
DROP PROCEDURE IF EXISTS `test`.`usp_test`$$
CREATE PROCEDURE `test`.`usp_test`()    
	LANGUAGE SQL
	DETERMINISTIC
	SQL SECURITY INVOKER
	COMMENT 'Test Procedure returns the numbers 1-5'
BEGIN
	SELECT 1
	UNION ALL
	SELECT 2
	UNION ALL
	SELECT 3
	UNION ALL
	SELECT 4
	UNION ALL
	SELECT 5;
END$$
DELIMITER ;

EXEC('CALL test.usp_test()') AT MYSQL;

EXEC('SHOW TABLES') AT MySQL; -- Show the tables in the current database
EXEC('SHOW SLAVE STATUS') AT MySQL; -- Show Slave status info (if applicable)
EXEC('SHOW DATABASES') AT MySQL; -- Show the accessible databases
EXEC('SHOW CREATE TABLE mysql.user') AT MySQL; -- Show the SQL used to create mysql.users