33 lines
1.4 KiB
C#
33 lines
1.4 KiB
C#
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namespace Umbraco.Core.Persistence.SqlSyntax
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{
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internal static class SqlSyntaxProviderExtensions
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{
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/// <summary>
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/// Returns the quotes tableName.columnName combo
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="tableName"></param>
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/// <param name="columnName"></param>
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/// <returns></returns>
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public static string GetQuotedColumn(this ISqlSyntaxProvider sql, string tableName, string columnName)
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{
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return sql.GetQuotedTableName(tableName) + "." + sql.GetQuotedColumnName(columnName);
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}
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/// <summary>
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/// This is used to generate a delete query that uses a sub-query to select the data, it is required because there's a very particular syntax that
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/// needs to be used to work for all servers: MySql, SQLCE and MSSQL
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/// </summary>
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/// <returns></returns>
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/// <remarks>
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/// See: http://issues.umbraco.org/issue/U4-3876
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/// </remarks>
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public static string GetDeleteSubquery(this ISqlSyntaxProvider sqlProvider, string tableName, string columnName, Sql subQuery)
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{
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return string.Format(@"DELETE FROM {0} WHERE {1} IN (SELECT {1} FROM ({2}) x)",
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sqlProvider.GetQuotedTableName(tableName),
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sqlProvider.GetQuotedColumnName(columnName),
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subQuery.SQL);
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}
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}
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}
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