MySQL Bugs: #73737: use UTF8MB4 as metadata charset

Bug #73737	use UTF8MB4 as metadata charset
Submitted:	27 Aug 2014 6:54
Reporter:	Jason Lv	Email Updates:
Status:	Open	Impact on me:	None
Category:	MySQL Server: Charsets	Severity:	S4 (Feature request)
Version:		OS:	Any
Assigned to:		CPU Architecture:	Any

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Description:
Since MySQL utf8 charset doesn't implement unicode characters beyond BMP(U+10000 above), this means MySQL cannot support supplementary characters in metadata. 

For example, creating a table with supplementary character in its name will result in 0x3F in the table name.

We request MySQL to use utf8mb4 as the metadata charset.

How to repeat:
show variable like 'character%'