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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘SQL Server 2008 R2’ Category

Interesting: SQL Server FileStream and FileTable

Posted by jpluimers on 2020/09/03

Some links for my research (when writing this a few years back, I had not done a lot of SQL Server BLOB work for a while, so I missed a lot of interesting progress).

 

As of SQL Server 2008, one can use FileStream, which SQL Server installs on an NTFS file system local to the SQL Server instance, but is accessible over the SQL Server API. It benefits from a lot of SQL Server features (including transactional and backup related).

As of SQL Server 2012, FileTable has extended FileStream, which makes it even easier to access the files from Windows applications.

Over the years, FileStream and FileTable has improved a lot.

Some links to get a feel:

–jeroen

Posted in Development, Database Development, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | Leave a Comment »

How to terminate sqlcmd immediately after execution completed? – Stack Overflow

Posted by jpluimers on 2018/01/24

The subtle difference between -q and -Q: the latter will exit after executing the command (regardless of the SQL server version; I think this was introduced in SQL Server 2005 or 2000).

Inside the command, you can use single ' quotes for strings.

C:\Users\jeroenp>sqlcmd /?
Microsoft (R) SQL Server Command Line Tool
Version 10.50.2500.0 NT x64
Copyright (c) Microsoft Corporation.  All rights reserved.

usage: Sqlcmd            [-U login id]          [-P password]
  [-S server]            [-H hostname]          [-E trusted connection]
  [-N Encrypt Connection][-C Trust Server Certificate]
  [-d use database name] [-l login timeout]     [-t query timeout]
  [-h headers]           [-s colseparator]      [-w screen width]
  [-a packetsize]        [-e echo input]        [-I Enable Quoted Identifiers]
  [-c cmdend]            [-L[c] list servers[clean output]]
  [-q "cmdline query"]   [-Q "cmdline query" and exit]
  [-m errorlevel]        [-V severitylevel]     [-W remove trailing spaces]
  [-u unicode output]    [-r[0|1] msgs to stderr]
  [-i inputfile]         [-o outputfile]        [-z new password]
  [-f  | i:[,o:]] [-Z new password and exit]
  [-k[1|2] remove[replace] control characters]
  [-y variable length type display width]
  [-Y fixed length type display width]
  [-p[1] print statistics[colon format]]
  [-R use client regional setting]
  [-b On error batch abort]
  [-v var = "value"...]  [-A dedicated admin connection]
  [-X[1] disable commands, startup script, enviroment variables [and exit]]
  [-x disable variable substitution]
  [-? show syntax summary]

–jeroen

via: [WayBackc# – How to terminate sqlcmd immediately after execution completed? – Stack Overflow

Posted in Database Development, Development, Software Development, SQL, SQL Server, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | 1 Comment »

Static Code Analyzer for T-SQL – MS SQL Server. Plugs into MS SSMS and can al…

Posted by jpluimers on 2017/01/12

Static Code Analyzer for T-SQL – MS SQL Server.

Plugs into MS SSMS and can also be run from command line.It reports useful clues which you can turn/on off to your liking. http://sqlcodeguard.com/index-database-issues.html

It will spot declared but unused variables, but it appears it doesn’t do code coverage or execution path to spot stuff like variables being used without being initialized.

http://sqlcodeguard.com/ Price: Free

Source: Lars Fosdal on G+: Static Code Analyzer for T-SQL – MS SQL Server. Plugs into MS SSMS and can al…

–jeroen

Posted in Database Development, Development, SQL, SQL Server, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | Leave a Comment »

SQL Server, Modulo, floats

Posted by jpluimers on 2016/12/08

SQL server % (modulo, not mod) operator doesn’t like floats (with reason).

You should get rid of the floats as they will give inaccurate results.

As a workaround, cast either through an integer or through a decimal: sql server modulo float – Google Search

CAST(CAST(TheInaccurateFloatValue AS decimal(38,19)) % ModuloValue AS float)

The decimal(38,19) is the maximum non-float precision you get.

( cast(dividend as integer) % divisor ) + ( dividend - cast(dividend as integer))

–jeroen

Posted in Algorithms, Database Development, Development, Floating point handling, Software Development, SQL, SQL Server, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | Leave a Comment »

Common Table Expressions: no nesting, but consecutively usage – via Stack Overflow

Posted by jpluimers on 2016/09/28

Common table expressions are awesome. They work in at least Oracle and SQL Server.

You cannot nest them, but you can use them consecutively. Thanks spender for explaining that:

WITH
x AS
(
SELECT * FROM MyTable
),
y AS
(
SELECT * FROM x
)
SELECT * FROM y

–jeroen

via: sql – Can you create nested WITH clauses for Common Table Expressions? – Stack Overflow.

Posted in Database Development, Development, OracleDB, SQL Server, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 | Leave a Comment »

 
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