Eval SQL.NET is a library that allows evaluating C# expression dynamically directly in T-SQL.
It provides to your SQL Server all missing pieces like regular expression and dynamic arithmetic string evaluation.
-- SELECT 3 SELECT SQLNET::New('x+y').ValueInt('x', 1).ValueInt('y', 2).EvalInt() as Result
Find your solutions:
- Dynamic Arithmetic Expression
- Dynamic Pivot Table
- Regular Expression
- String Interpolation
- Replace xp_cmdshell with DirectoryInfo & FileInfo
Performance tuning is one of the most important tasks for a DBA. Don’t miss the chance to dramatically improve query performance by 300% for simple expression and more than 2000% for complex code over User-Defined Function (UDF) and Table-Valued Function (TVF).
Benchmark to split string with delimiters in SQL
| Methods | 1,000 rows | 10,000 rows | 100,000 rows | 1,000,000 rows |
|---|---|---|---|---|
| Eval-SQL.NET | 4 ms | 13 ms | 160 ms | 1,650 ms |
| fn_split (TVF) | 100 ms | 625 ms | 5,500 ms | 55,000 ms |
* PRO Version unlocked for the current month
Minimum Requirements:
- SQL 2012 / SQL Azure v12
- SAFE Permission (SQL CLR)
Make the impossible now possible. Evaluate C# expression in SQL to overcome limitations.
- Allow trusted users to create report field and filter
- Consume Web Service
- Replace text in the template with String Interpolation
-- CREATE test DECLARE @table TABLE ( X INT, Y INT, Z INT ) INSERT INTO @table VALUES ( 2, 4, 6 ), ( 3, 5, 7 ), ( 4, 6, 8 ) -- Result: 14, 22, 32 DECLARE @sqlnet SQLNET = SQLNET::New('x*y+z') SELECT @sqlnet.ValueInt('x', X) .ValueInt('y', Y) .ValueInt('z', Z) .EvalInt() as Result FROM @table
Improve performance and capability for splitting text with an easy to use split function and LINQ expression
- Split text with multiple delimiters
- Split text using a regular expression
- Include row index
-- CREATE test
DECLARE @t TABLE (Id INT , Input VARCHAR(MAX))
INSERT INTO @t VALUES ( 1, '1, 2, 3; 4; 5' ), ( 2, '6;7,8;9,10' )
-- SPLIT with many delimiters: ',' and ';'
DECLARE @sqlnet SQLNET = SQLNET::New('Regex.Split(input, ",|;")')
SELECT *
FROM @t AS A
CROSS APPLY ( SELECT *
FROM dbo.SQLNET_EvalTVF_1(@sqlnet.ValueString('input', Input))
) AS B
Use Regex flexibility to overcome “LIKE” and “PATHINDEX” limitations.
- IsMatch
- Match
- Matches
- Replace
- Split
DECLARE @customer TABLE ( Email VARCHAR(255) ) INSERT INTO @customer VALUES ( '[email protected]' ), ( 'invalid.com' ), ( '[email protected]' ) DECLARE @valid_email SQLNET = SQLNET::New('Regex.IsMatch(email, @"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")') -- SELECT 'invalid.com' SELECT * FROM @customer WHERE @valid_email.ValueString('email', Email).EvalBit() = 0
Avoid enabling xp_cmdshell and compromising your SQL Server and use a more restrictive solution instead.
- Impersonate Context
- Improve maintainability
- Improve readability
- Improve security
-- REQUIRE EXTERNAL_ACCESS permission DECLARE @sqlnet SQLNET = SQLNET::New(' string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); var dir = new DirectoryInfo(path); return dir.GetFiles("*.*") .Select(x => new { x.FullName, FileContent = File.ReadAllText(x.FullName) }) .OrderBy(x => x.FullName)') .Impersonate() -- SELECT FullName, FileContext FROM DesktopFiles ORDER BY Fullname EXEC dbo.SQLNET_EvalResultSet @sqlnet
| Features | PRO Version |
|---|---|
| Maximum Characters | Unlimited |
| Commercial License | Yes |
| Support & Upgrades (1 year) | Yes |
Learn more about the PRO Version
The best way to contribute is by spreading the word about the library:
- Blog it
- Comment it
- Star it
- Share it
A HUGE THANKS for your help.
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To view all our free and paid projects, visit our website ZZZ Projects.