MariaDB中表连接的最大数量是多少？

Question

MariaDB 10中的表连接数限制为61 as is the case for MySQL还是另一个数？

（我找不到在MariaDB documentation或通过google搜索的答案）。

Answer 1

MariaDB的具有在连接的61代表相同的最大数目。

这个查询

CREATE TABLE t (i INT(10) NOT NULL); 
select * 
from t a01 join t a02 join t a03 join t a04 join t a05 join t a06 join t a07 join t a08 join t a09 join t a10 
join t a11 join t a12 join t a13 join t a14 join t a15 join t a16 join t a17 join t a18 join t a19 join t a20 
join t a21 join t a22 join t a23 join t a24 join t a25 join t a26 join t a27 join t a28 join t a29 join t a30 
join t a31 join t a32 join t a33 join t a34 join t a35 join t a36 join t a37 join t a38 join t a39 join t a40 
join t a41 join t a42 join t a43 join t a44 join t a45 join t a46 join t a47 join t a48 join t a49 join t a50 
join t a51 join t a52 join t a53 join t a54 join t a55 join t a56 join t a57 join t a58 join t a59 join t a60 
join t a61 join t a62; 

产生ERROR 1116 (HY000): Too many tables; MariaDB can only use 61 tables in a join。