Menu
When I try to create UK for 7 columns I get
Total size of an index or primary key can not exceed 900 bytes.
How can I solve this error?
658
A table can only take one primary key. Primary columns have a maximum length of 900 bytes. A primary key column cannot accept null values.
The maximum key length for a nonclustered index is 1700 bytes.
A primary key index consists of one or more fields that uniquely identify all records in a table in a predefined order. Because the index field must be unique, the Unique property of the Index object is set to True.
If you are in SSMS you will get this error and will not be able to create the index.
You can however can script it out and the same index creation will only produce a warning.
Warning! The maximum key length is 900 bytes. The index 'IX_Member_LoginName' has maximum length of 2000 bytes. For some combination of large values, the insert/update operation will fail.
script was
CREATE NONCLUSTERED INDEX [IX_Members_LoginName] ON [dbo].[Members]
(
[LoginName] ASC
)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE =
OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF,
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
