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Hi,<br />
<br />
I have a big union query (30 tables, each tabele has 1 milion records).<br />
When I run the query for only 5 tabels it is ok, but when I try to run for all 30 table I get an error - MySql Server has gone away.<br />
<br />
<br />
Thank you,
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Hi,

I have a big union query (30 tables, each tabele has 1 milion records).
When I run the query for only 5 tabels it is ok, but when I try to run for all 30 table I get an error - MySql Server has gone away.


Thank you,

MySQL error - MySql Server has gone away

MySQL is an open source, relational database management system that runs as a server providing multi-user access to a number of databases. Acquired by Oracle in 2009, it is frequently used in combination with PHP installations, powering most of the WordPress installations.

MySQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.