If you have data in the table, SHOW TABLE STATUS. If no data yet, it is more complicated. Some approximations for MyISAM: INT takes 4 bytes CHAR, TEXT, BLOB, VARCHAR -- estimate average length, add 1 DATETIME -- 8 TIMESTAMP -- 4 ...
// @retval true Could not find or delete data bool erase(const keyring_common::meta::Metadata &metadata, keyring_common::data::Data &data); // Generate random data and store it // @param [in] metadata Key // @param [out] data Generated value // @param [in] length Length of dat...
MySQL also requires memory for the table definition cache. Thetable_definition_cachesystem variable defines the number of table definitions that can be stored in the table definition cache. If you use a large number of tables, you can create a large table definition cache to speed up the openi...
To check the sizes of all of the tables in a specific database, at the mysql> prompt, type the following command. Replace database_name with the name of the database that you want to check: CopySELECT table_name AS "Table", ROUND(((data_length + index_length) / 1024 / 1024), 2...
hi i need some vc++ header files in external dependencies i found the link but how to add there?http://social.msdn.microsoft.com/Forums/en/vcgeneral/thread/09246868-587e-4980-98a4-e8860276913bWhen i click property textbox of Additional dependencies the drowdown appear with 2 items...
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To find the size of all databases in phpMyAdmin: 1. On theindexpage, locate and select theDatabasestab in the top navbar. 2. Below the table, selectEnable statistics. Enabling statistics can cause high traffic between MySQL andweb servers. Use this method when there's low traffic to minimi...
MySqlClient.MySqlConnection cannot be cast to [B]MySQL.Data.MySqlClient.MySqlConnection. [C#] How to make the Console Process delay [C#] Oracle.DataAccess issue - Unhandled exception of type System.TypeInitializationException occured in mscorlib.dll [C#] Regex - Best Validation of Domain? [C#]...
In the benchmark suite, a time more than 15,000 times slower than MySQL server was seen. This is due to mSQL’s lack of a join optimiser to order tables in the optimal order. However, if you put the tables in exactly the right order in mSQL2 and the WHERE is simple and uses ...
SELECT SUBSTR(@s, 1, LENGTH(@s)-LENGTH(SUBSTRING_INDEX(@s, ',', -1))-1); But as a note: If you can, I would suggest to redesign the schema. Having multiple values isn't a good idea. Better is to put those values in their own table. If it has to be inside that table for...