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I have a situation where I would like to search a single word.
For that scenario, which query would be good from a performance point of view?
Select Col1, Col2 from Table Where Col1 Like '%Search%'
or
Select Col1, Col2 from Table Where Col1 CONTAINS(Col1,'Search')
?
Full Text Searching (using the CONTAINS) will be faster/more efficient than using LIKE with wildcarding. Full Text Searching (FTS) includes the ability to define Full Text Indexes, which FTS can use. I don’t know why you wouldn’t define a FTS index if you intended to use the functionality.
LIKE with wildcarding on the left side (IE:
LIKE '%Search') can not use an index (assuming one exists for the column), guaranteeing a table scan. I haven’t tested & compared, but regex has the same pitfall. To clarify,LIKE '%Search'andLIKE '%Search%'can not use an index;LIKE 'Search%'can use an index.