How to get Size of Column with sys object

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SQL-Server-2008

Hi ,
I want to khow the how to get the Size of table column from sys object method in sql server 2005.
i got table Column name with sys.column , DataType with sys.types, then i want to khow how we got Column Size ?
I want to run below quary.

SQL

Select 1 from sys.objects A, sys.columns B , sys.types C Where A.object_id = B.object_id And  A.name = 'tbl_13' And B.name='name' And C.name ='varchar'

Thanks in advanced.
regards
Ravi

Posted 14-Sep-11 20:53pm

Ravi Sharma 2

Updated 14-Sep-11 20:57pm

Suresh Suthar

v2

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MZwahlen · Answer 1 · 2011-09-14T20:59:00

Solution 1

To measure the length of VARCHAR fields you can use the function
LEN(varcharfield) .

To measure the length of TEXT fields the function is DATALENGTH(textfield). Len will not work for text field.

Example:

SQL

SELECT DATALENGTH(yourtextfield) AS TEXTFieldSize

Markus

Posted 14-Sep-11 20:59pm

MZwahlen

Updated 14-Sep-11 21:41pm

v4

Comments

Ravi Sharma 2 15-Sep-11 3:09am

How to find out the length with Sys object

MZwahlen 15-Sep-11 3:38am

Try 'select *' instead of 'select 1'

You can get all information about a TableRow with:

Select * from sys.objects A, sys.columns B , sys.types C Where A.object_id = B.object_id And A.name = 'tbl_13' And B.name='name' And C.name ='varchar'

the length is in 'max_length'