How many tables can be created in a mysql database?

How many tables can be created in a mysql database ?

And how many columns can be created in a mysql table ?

How many rows can be inserted into a mys开发者_C百科ql table ?

How many tables can be created in a mysql database ?

MySQL has no limit on the number of databases. The underlying file system may have a limit on the number of tables. Individual storage engines may impose engine-specific constraints. InnoDB permits up to 4 billion tables.

And how many columns can be created in a mysql table ?

There is a hard limit of 4096 columns per table, but the effective maximum may be less for a given table. The exact limit depends on several interacting factors.

How many rows can be inserted into a mysql table ?

The number of rows is limited by the maximum size allowed for a table. This is OS-dependent. You can impose a limit on the number of rows by setting MAX_ROWS at table creation time.

Reference: Limits in MySQL

It really depends on the operating system and version of MySQL. Generally the MySQL file size for tables can be: (5.0 Version)

 Operating System       File-size Limit
 Win32 w/ FAT/FAT32     2GB/4GB
 Win32 w/ NTFS          2TB (possibly larger)
 Linux 2.2-Intel 32-bit 2GB (LFS: 4GB)
 Linux 2.4+                 4TB(using ext3 file system)
 Solaris 9/10           16TB
 MacOS X w/ HFS+        2TB
 NetWare w/NSS file system  8TB

For more information check http://dev.mysql.com/doc/refman/5.0/en/table-size-limit.html

Unlimited. 4096 columns. Number of row limit is unknown to me.

See for example http://dev.mysql.com/doc/refman/5.0/en/column-count-limit.html.

Hard cap 4096 columns, but my experience: try not to use VARCHAR, use TINYTEXT. Otherwise, you will easily reach limit "65,535-byte row size limit" even though you have less than 50 columns in the table.

Maximum row size allowed is 65535 bytes