Microsoft Basic Extensions to SQL, T-SQL functions, CAST and Convert, CASE, etc.

1. T-SQL Expressions
Microsoft Extensions to SQL

2. DataTypes
Description SQL ServerType
Strings andTexts char, nchar, varchar, nvarchar, text,
ntext
Integer Numbers tinyint, smallint, int, bigint
Float Numbers real, float, double, decimal
Currency or Money smallmoney, money, decimal
Date andTime date, smalldatetime, datetime,
datetime2, time, datetimeoffset
Binary binary, varbinary, image
Boolean bit
GUIDs uniqueidentifier
SpatialTypes geometry, geography

3. Date &Time
Manipulation
GETDATE GETUTCDATE DATEPART
DAY MONTH YEAR
DATEDIFF DATEDIFF_BIG DATEADD
EOMONTH ISDATE

4. String
Manipulation
ASCII CHAR CHARINDEX
CONCAT CONCAT_WS DIFFERENCE
FORMAT LEFT LEN
LOWER LTRIM NCHAR
PATINDEX QUOTENAME REPLACE
REPLICATE REVERSE RIGHT
RTRIM SOUNDEX SPACE
STR STRING_AGG STRING_ESCAPE
STRING_SPLIT STUFF SUBSTRING
TRANSLATE TRIM UNICODE
UPPER

5. FORMAT
Function
 https://docs.microsoft.com/en-us/sql/t-sql/functions/format-
transact-sql
DECLARE @d DATETIME = '10/01/2011';
SELECT FORMAT ( @d, 'd', 'en-US' ) AS 'US English Result'
,FORMAT ( @d, 'd', 'en-gb' ) AS 'Great Britain English Result'
,FORMAT ( @d, 'd', 'de-de' ) AS 'German Result'
,FORMAT ( @d, 'd', 'zh-cn' ) AS 'Simplified Chinese (PRC) Result'
SELECT FORMAT ( @d, 'D', 'en-US' ) AS 'US English Result'
,FORMAT ( @d, 'D', 'en-gb' ) AS 'Great Britain English Result'
,FORMAT ( @d, 'D', 'de-de' ) AS 'German Result'
,FORMAT ( @d, 'D', 'zh-cn' ) AS 'Chinese (Simplified PRC) Result'

6. Cast and
Convert
 Using CAST
 CAST(‘1234’ AS int)
 CAST(1234 AS varchar)
 Using Convert
 CONVERT(int, ‘1234’)
 CONVERT(varchar, 123456)
 CONVERT(varchar, GETDATE(), 112)

7. CASEWHEN
 Use as Conditional Expression
CASE Gender
WHEN ‘M’ THEN ‘Male’
WHEN ‘F’ THEN ‘Female’
ELSE ‘Unknown’
END
CASE
WHEN TotalChildren <= 1 Then ‘< 2’
WHEN TotalChildren BETWEEN 2 AND 4 Then ‘2-4’
ELSE ‘> 4’
END

8. Misc
 Using Parameters (@param)
 Using Brackets [ ]
 Using System Information (sys.databases, sys.tables)
 RowAggregate Expressions ( using OVER, FIRST_VALUE, …)

9. About Me
Amin Choroomi
CTO & Co-Founder at vdash
Software Developer, Teacher and Consultant
DataVisualization, Analytics, Dashboards
Data Warehousing, Integration, Business Intelligence
http://www.vdash.ir
choroomi@live.com
choroomi@vdashonline.com
https://linkedin.com/in/choroomi
@aminchoroomi

10. ThankYou