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[18 Июль 2025, 10:33:52]

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 Maximum sizes/numbers
Object SQL Server 7.0 SQL Server 2000
Batch size 65,536 * Network Packet Size1 65,536 * Network Packet Size1
Bytes per short string column 8,000 8,000
Bytes per text, ntext, or image column 2 GB-2 2 GB-2
Bytes per GROUP BY, ORDER BY 8,060  
Bytes per index 900 9002
Bytes per foreign key 900 900
Bytes per primary key 900 900
Bytes per row 8,060 8,060
Bytes in source text of a stored procedure Lesser of batch size or 250 MB Lesser of batch size or 250 MB
Clustered indexes per table 1 1
Columns in GROUP BY, ORDER BY Limited only by number of bytes  
Columns or expressions in a GROUP BY WITH CUBE or WITH ROLLUP statement 10  
Columns per index 16 16
Columns per foreign key 16 16
Columns per primary key 16 16
Columns per base table 1,024 1,024
Columns per SELECT statement 4,096 4,096
Columns per INSERT statement 1,024 1,024
Connections per client Maximum value of configured connections Maximum value of configured connections
Database size 1,048,516 TB3 1,048,516 TB3

Databases per instance of SQL Server 32,767 32,767
Filegroups per database 256 256
Files per database 32,767 32,767
File size (data) 32 TB 32 TB
File size (log) 4 TB 32 TB
Foreign key table references per table 253 253
Identifier length (in characters) 128 128
Instances per computer N/A 16
Length of a string containing SQL statements (batch size) 65,536 * Network packet size1 65,536 * Network packet size1
Locks per connection Max. locks per server Max. locks per server
Locks per instance of SQL Server 2,147,483,647 (static)
40% of SQL Server memory (dynamic) 2,147,483,647 (static)
40% of SQL Server memory (dynamic)
Nested stored procedure levels 32 32
Nested subqueries 32 32
Nested trigger levels 32 32
Nonclustered indexes per table 249 249
Objects concurrently open in an instance of SQL Server4 2,147,483,647 (or available memory) 2,147,483,647 (or available memory)
Objects in a database 2,147,483,6474 2,147,483,6474
Parameters per stored procedure 1,024 1,024
REFERENCES per table 253 253
Rows per table Limited by available storage Limited by available storage
Tables per database Limited by number of objects in a database4 Limited by number of objects in a database4
Tables per SELECT statement 256 256
Triggers per table Limited by number of objects in a database4 Limited by number of objects in a database4