How to append data in SQL

I think you want to update a column of a table, right?
Then you SQL statement should be something like:

UPDATE YourTableNameHere
SET FieldToBeUpdated = FieldToBeUpdated + TextToBeAppend
WHERE WOC.WONUM = WO.WONUM and WO.CLOSEDATE = '1900-01-01 00:00:00.000' and 
 WO.REQUESTDATE < '2014-01-01 00:00:00.000'

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UPDATE mytable
SET table_field = table_field + ISNULL(mytext,'')
FROM
mytable WOC,
mytable2 WO
WHERE WOC.WONUM = WO.WONUM and WO.CLOSEDATE = '1900-01-01 00:00:00.000' and 
 WO.REQUESTDATE < '2014-01-01 00:00:00.000'

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Hi

I have created the query
UPDATE WOC
Set WOC.TEXTS = WOC.TEXTS + 'Authorised by BJ'
From WOC,WO
where WOC.WONUM = WO.WONUM and WO.CLOSEDATE = '1900-01-01 00:00:00.000' and
WO.REQUESTDATE < '2014-01-01 00:00:00.000'

But got the following error
Msg 402, Level 16, State 1, Line 2
The data types text and varchar are incompatible in the add operator.

The WOC.TEXT field is (text, Null)

Gordon

and that should be changed, unless you have some old sql server (or the db in a old compatibility version)
change the field to varchar(max) which has the same capacity as TEXT, but the normal operations than varchar.

Guy Hengel is right. Why you need a TEXT data type? How many characters are you expecting to store in that field?

The WOC.TEXt is in a database which I cannot change

Gordon

updating TEXT columns is not so easy, and cannot be done in a UPDATE or JOIN.
see here for the syntax, please refer to the tech reference:
http://msdn.microsoft.com/en-us/library/ms189466.aspx

Works Great