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U4-8837 Change paging query for SQL server 2012+ to be more efficient

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This commit is contained in:
Shannon
2016-08-09 15:33:35 +02:00
parent 5b88f35471
commit c1da28dd47
6 changed files with 134 additions and 78 deletions
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49
src/Umbraco.Core/Persistence/SqlSyntax/SqlServerSyntaxProvider.cs
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@@ -14,12 +14,57 @@ namespace Umbraco.Core.Persistence.SqlSyntax
public SqlServerSyntaxProvider()
{
}
}
/// <summary>
/// Gets/sets the version of the current SQL server instance
/// </summary>
internal Lazy<SqlServerVersionName> VersionName { get; set; }
internal SqlServerVersionName GetVersionName(Database database)
{
if (_versionName.HasValue)
return _versionName.Value;
try
{
var version = database.ExecuteScalar<string>("SELECT SERVERPROPERTY('productversion')");
var firstPart = version.Split('.')[0];
switch (firstPart)
{
case "13":
_versionName = SqlServerVersionName.V2014;
break;
case "12":
_versionName = SqlServerVersionName.V2014;
break;
case "11":
_versionName = SqlServerVersionName.V2012;
break;
case "10":
_versionName = SqlServerVersionName.V2008;
break;
case "9":
_versionName = SqlServerVersionName.V2005;
break;
case "8":
_versionName = SqlServerVersionName.V2000;
break;
case "7":
_versionName = SqlServerVersionName.V7;
break;
default:
_versionName = SqlServerVersionName.Other;
break;
}
}
catch (Exception)
{
_versionName = SqlServerVersionName.Invalid;
}
return _versionName.Value;
}
private SqlServerVersionName? _versionName;
/// <summary>
/// SQL Server stores default values assigned to columns as constraints, it also stores them with named values, this is the only