2020-03-07 mysql 练习 mysql常用系统函数归类

1.
SHOW VARIABLES LIKE '%storage_engine%'
SHOW ENGINES;
SELECT VERSION(),SYSTEM_USER(),DATABASE(),SCHEMA(),CONNECTION_ID(),LAST_INSERT_ID(),SESSION_USER(),USER(),CHARSET('abc'),COLLATION('abc') FROM DUAL
SELECT RAND(),1+2,3 MOD 2,2^3,2&3,2|3,~3,2>>3,2<<32

2.mysql常用系统函数归类   https://www.cnblogs.com/shoshana-kong/p/11049983.html

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