Is there a way to convert varchar to UNIQUEIDENTIFIER?
However, the following query lines don’t work for me: Msg 8169, Level 16, State 2, Line 1 Conversion failed when converting from a character string to uniqueidentifier. The same queries using a hyphenated uniqueidentifier work fine but the data is not stored in that format.
Is there an implicit conversion between UNIQUEIDENTIFIER and PPA?
Conversion failed when converting from a character string to uniqueidentifier. This is a result of a query like this: Previous to adding the computed column, I could join on these two columns (r.seq_no is a UNIQUEIDENTIFIER and ppa.ref_id is a VARCHAR). SQL Server simply did an implicit conversion and never complained.
Is the varchar or char datatype hurting your performance?
A common issue I’ve seen with code developed in ADO.Net is parameterized SQL performing full scans as a result of implicit conversions (despite appropriate indexing). This seems to occur most commonly if a database uses VARCHAR/CHAR datatypes as opposed to NVARCHAR/NCHAR datatypes.
When to use implicit conversion in SQL Server?
SQL Server will perform an implicit conversion when attempting to compare two datatypes that do not match. I will use the Adventureworks2012 database in my examples. For the sake of example, I will create a copy of the sales.Customer table and create some indexes on it.
Is there an error selecting on unique identifier?
Both give me same error: Error converting data type varchar to uniqueidentifier. The first query is ok, but you are missing a digit on the first part of the GUID, it should have 8 digits, not seven….something like this: Thanks for contributing an answer to Stack Overflow!
How to select a column of type UNIQUEIDENTIFIER?
How do I select a column of type uniqueidentifier when I have a guid? Both give me same error: Error converting data type varchar to uniqueidentifier. The first query is ok, but you are missing a digit on the first part of the GUID, it should have 8 digits, not seven….something like this: