I had to connect to a SQL Server database from a PHP script earlier, and I came across an error I wasn’t expecting.
My SQL was working fine, until I tried to select one particular column, it would then give me a 4004 error. Other columns in this table worked fine, so I investigated more.
The error string returned with the 4004 error code was “Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier.”
Looking at the table definition, the column I was trying to SELECT was of type ntext. This is used to hold UTF-8 data.
By default the driver I had installed for PHP on Ubuntu Linux using
apt-get install php5-sybase
/etc/freedts/freetds.conf I added these settings
[global] tds version = 8.0 client charset = UTF-8
After adding those settings, I was successfully able to
SELECT the ntext column from the SQL Server database.