Get file size – Learn more on the SQLServerCentral forums. I cannot use xpfilesize because the i cannot make use of xpFileUtil.dll file into the sql server version which I am using.
Hi,I have a table with 500 columns, most of them are type of varchar. I would have the following data set:ColumnName DataTypeLength MaxLength-ColA 50 42ColB 10 7ColC 50 8.I can have a query to get the data type length (hom many varchar) for each columns:SELECT columnname, dataType, charactermaximumlengthFROM informationSchema.columnsWHERE tablename='.' ORDER BY ordinalpositionbut I have problem to get the actual maximum length of the each column.
Anybody have the similar query?thanks. Code SnippetDECLARE @SQL VARCHAR ( MAX )DECLARE @TableName sysnameSET @TableName = 'Contacts'SET @SQL = 'SELECT @SQL = @SQL + 'SELECT ' + QUOTENAME ( sc. Name, ' ) + ' AS ColumnName, ' + QUOTENAME ( t. Name, ' ) + ' AS DataType, ' +QUOTENAME ( sc. Maxlength, ' ) + ' AS SetLength, MAX(DATALENGTH(' + QUOTENAME ( sc. Name ) + ')) AS MaxLength FROM ' + @TableName + char ( 10 ) + ' UNION 'FROM sys.columns scjoin sys.types t on t.
Systemtypeid = sc. Systemtypeid and t. Name!= 'sysname'WHERE sc. OBJECTID = OBJECTID ( @TableName )SET @SQL = LEFT( @SQL, LEN ( @SQL )- 6 )PRINT @SQLEXEC ( @SQL ). Code SnippetDECLARE @SQL VARCHAR ( MAX )DECLARE @TableName sysnameSET @TableName = 'Contacts'SET @SQL = 'SELECT @SQL = @SQL + 'SELECT ' + QUOTENAME ( sc. Name, ' ) + ' AS ColumnName, ' + QUOTENAME ( t.
Name, ' ) + ' AS DataType, ' +QUOTENAME ( sc. Maxlength, ' ) + ' AS SetLength, MAX(DATALENGTH(' + QUOTENAME ( sc. Name ) + ')) AS MaxLength FROM ' + @TableName + char ( 10 ) + ' UNION 'FROM sys.columns scjoin sys.types t on t. Systemtypeid = sc.
Systemtypeid and t. Name!= 'sysname'WHERE sc. OBJECTID = OBJECTID ( @TableName )SET @SQL = LEFT( @SQL, LEN ( @SQL )- 6 )PRINT @SQLEXEC ( @SQL ).
Maximum Capacity Specifications for SQL Server. 8 minutes to read.In this articleAPPLIES TO: SQL Server Azure SQL Database Azure SQL Data Warehouse Parallel Data WarehouseThe following tables specify maximum sizes and numbers of various objects defined in SQL Server components. To navigate to the table for a SQL Server technology, click on its link:Database Engine ObjectsMaximum sizes and numbers of various objects defined in SQL Server databases or referenced in Transact-SQL statements. SQL Server Database Engine objectMaximum sizes/numbers SQL Server (64-bit)Additional InformationBatch size65,536. Network Packet SizeNetwork Packet Size is the size of the tabular data stream (TDS) packets used to communicate between applications and the relational Database Engine.
The default packet size is 4 KB, and is controlled by the network packet size configuration option.Bytes per short string column8,000Bytes per GROUP BY, ORDER BY8,060Bytes per index key900 bytes for a clustered index. 1,700 for a nonclustered index.The maximum number of bytes in a clustered index key cannot exceed 900 in SQL Server.
For a nonclustered index key, the maximum is 1700 bytes.You can define a key using variable-length columns whose maximum sizes add up to more than the limit. However, the combined sizes of the data in those columns can never exceed the limit.In a nonclustered index, you can include extra non-key columns, and they do not count against the size limit of the key. The non-key columns might help some queries perform better.Bytes per index key for memory-optimized tables2500 bytes for a nonclustered index. No limit for a hash index, as long as all index keys fit in-row.On a memory-optimized table, a nonclustered index cannot have key columns whose maximum declared sizes exceed 2500 bytes. It is irrelevant whether the actual data in the key columns would be shorter than the maximum declared sizes.For a hash index key there is no hard limit on size.For indexes on memory-optimized tables, there is no concept of included columns, since all indexes inherently cover of all columns.For a memory-optimized table, even though the row size is 8060 bytes, some variable-length columns can be physically stored outside those 8060 bytes. However, the maximum declared sizes of all key columns for all indexes on a table, plus any additional fixed-length columns in the table, must fit in the 8060 bytes.Bytes per foreign key900Bytes per primary key900Bytes per row8,060SQL Server supports row-overflow storage which enables variable length columns to be pushed off-row.
Only a 24-byte root is stored in the main record for variable length columns pushed out of row; because of this, the effective row limit is higher than in previous releases of SQL Server. For more information, see.Bytes per row in memory-optimized tables8,060Starting SQL Server 2016 (13.x) memory-optimized tables support off-row storage.
Variable length columns are pushed off-row if the maximum sizes for all the columns in the table exceeds 8060 bytes; this is a compile-time decision. Only an 8-byte reference is stored in-row for columns stored off-row. For more information, see.Bytes in source text of a stored procedureLesser of batch size or 250 MBBytes per varchar(max), varbinary(max), xml, text, or image column2^31-1Characters per ntext or nvarchar(max) column2^30-1Clustered indexes per table1Columns in GROUP BY, ORDER BYLimited only by number of bytesColumns or expressions in a GROUP BY WITH CUBE or WITH ROLLUP statement10Columns per index key32If the table contains one or more XML indexes, the clustering key of the user table is limited to 31 columns because the XML column is added to the clustering key of the primary XML index. In SQL Server, you can include nonkey columns in a nonclustered index to avoid the limitation of a maximum of 32 key columns.
For more information, see.Columns per foreign key32Columns per primary key32Columns per nonwide table1,024Columns per wide table30,000Columns per SELECT statement4,096Columns per INSERT statement4,096Connections per clientMaximum value of configured connectionsDatabase size524,272 terabytesDatabases per instance of SQL Server32,767Filegroups per database32,767Filegroups per database for memory-optimized data1Files per database32,767File size (data)16 terabytesFile size (log)2 terabytesData files for memory-optimized data per database4,096 in SQL Server 2014 (12.x). Later versions of SQL Server do not impose such a strict limit.Delta file per data file for memory-optimized data1Foreign key table references per tableOutgoing = 253.