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Revision: 31987
at September 16, 2010 22:42 by hairajeshk

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Creating index on huge text columns:
Index will be limited to only 900 characters so try to create on 900 first 900 bytes (unique constraint or index)

--Create the table
IF OBJECT_ID('dbo.Unique900byte', 'U') IS NOT NULL
   DROP TABLE dbo.Unique900byte
CREATE TABLE dbo.Unique900byte (
   ReallyLongText VARCHAR(1000) NOT NULL
   , Unique_ReallyLongText AS SUBSTRING ( ReallyLongText, 1, 900) 
   , CONSTRAINT UC_Unique900byte_Unique_ReallyLongText UNIQUE (Unique_ReallyLongText))
--Insert long text 
INSERT dbo.Unique900byte SELECT REPLICATE('A', 900)+ 'This is just a filler data'
INSERT dbo.Unique900byte SELECT REPLICATE('B', 900)+ 'This is just a filler data'
--Check the data
SELECT * FROM dbo.Unique900byte

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Creating index on huge text columns

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Creating Index on Large Text columns

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