How do I query an integer column for "starts with" in Entity Framework?
I have a co开发者_如何转开发lumn that's defined as an integer in EF (Code First). I want to search it using "starts with." Now, I can do this:
Where(x => SqlFunctions.StringConvert((double)x.AccountNumber).StartsWith(searchTerm))
However, SqlFunctions.StringConvert()
gets translated to the T-SQL function STR()
, which left-pads the result for reasons which are beyond my comprehension.
Also, I can't use string.TrimStart()
because it's not supported by the Entity Framework.
Can anyone lend any help?
Trim()
and TrimStart()
work in LINQ to Entities, so you can use:
Where(x => SqlFunctions.StringConvert((double)x.AccountNumber)
.TrimStart().StartsWith(searchTerm))
TrimStart
translates into LTRIM
in SQL. With searchTerm
= 123 for example you get something like:
WHERE LTRIM(STR( CAST( [Extent1].[AccountNumber] AS float))) LIKE N'123%'
精彩评论