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For SQL Server 2008, if I have a table with a field defined as either varchar(255) or nvarchar(MAX), can I input a comma in place of a value when using an insert statement if the field has no value?

Posted on 2016-09-20
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Last Modified: 2016-09-21
For SQL Server 2008, if I have a table with a field defined as either varchar(255) or nvarchar(MAX), can I input a comma in place of a value when using an insert statement, if the field has no value? Allow Nulls is checked.
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Question by:zimmer9
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Expert Comment

by:lcohan
ID: 41807641
Sure you can. the difference between VARCHAR and NVARCHAR SQL types is that Nvarchar allows  input/storage of UNICODE characters and Varchar doesnt.

http://www.sqlserver.info/database-design/varchar-vs-nvarchar/
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Author Comment

by:zimmer9
ID: 41807708
OK, let's say I have a table with 14 fields that are defined as varchar(255) followed by the 15th field defined as bit, followed by 5 fields that are defined as varhar(255) followed by the 21st field defined as bit. How would you write an INSERT statement to load 1 record into this table using commas and a bit value of 1 for the 2 fields defined as bit.

For ex:

Insert Into dbo.tbl_CSL_Branches Values
(,,,,,,,,,,,,,,1,,,,,,1);
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Author Comment

by:zimmer9
ID: 41807838
When I use:

Insert Into dbo.tbl_CSL_Branches Values
 (,,,,,,,,,,,,,,1,,,,,,1);

I get the error:

Msg 102, Level 15, State 1, Line 2
Incorrect syntax near ','.
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Accepted Solution

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Pawan Kumar earned 500 total points
ID: 41807847
Comma is field separator in the syntax thats why it is not working. Also we have supply comma in single quotes as it a string value

@Author -- Pls use below

--

INSERT INTO dbo.tbl_CSL_Branches VALUES
(',',',',',',1,',',',',',',',')

--

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Expert Comment

by:Pawan Kumar
ID: 41807850
Varchar[(n)]
      
It is Non-Unicode Variable Length character data type.
Example: DECLARE @varchar AS VARCHAR(100) = 'Pawan'
SELECT @varchar      

NVarchar[(n)]

UNicode Variable Length character data type. It can store both non-Unicode and Unicode (i.e. Japanese, Korean, Chineese etc) characters.
DECLARE @Nvarchar AS NVARCHAR(100)= 'Pawan'
SELECT @Nvarchar

Complete code--

CREATE TABLE testComma
(
	Id TINYINT NOT NULL
	Val1 VARCHAR(255) NOT NULL
	Val2 NVARCHAR(MAX) NOT NULL
)
GO


INSERT INTO dbo.tbl_CSL_Branches
VALUES (1,',',',')

GO
--

Open in new window


--
Pls try and let us know in case of any issues..
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Expert Comment

by:Zberteoc
ID: 41808710
Why not use this:
INSERT INTO YourTable (bit_col1, bit_col2) VALUES(1,1)

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