4 Commits

Author	SHA1	Message	Date
Sergei Golubchik	180065ebb0	Item::print(): remove redundant parentheses ... by introducing new Item::precedence() method and using it to decide whether parentheses are required	2016-12-12 20:44:41 +01:00
Sergei Golubchik	1db438c833	MDEV-11066 use MySQL terminology for "virtual columns"	2016-12-12 20:35:51 +01:00
Sergei Golubchik	a411d7f4f6	store/show vcols as item->print() ... otherwise we'd need to store sql_mode *per vcol* (consider CREATE INDEX...) and how SHOW CREATE TABLE would support that? Additionally, get rid of vcol::expr_str, just to make sure the string is always generated and never leaked in the original form.	2016-12-12 20:35:41 +01:00
Igor Babaev	f7a75b999b	The main commit of Andrey Zhakov's patch introducing vurtual(computed) columns. ... The original patch has been ameliorated by Sanja and Igor.	2009-10-16 15:57:48 -07:00