MySQL Features & Bugs
From ISoft Wiki
Revision as of 09:52, 18 November 2020 by Daytonlowell (talk | contribs) (→LEFT JOINs act like JOINs sometimes when using ODBC date format)
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Features
- Automatic Initialization and Updating for TIMESTAMP and DATETIME: added in 5.6.5 Source
- Virtual/Generated Columns: added in 5.7.9 Source
- JSON Column Data Type: added in 5.7.8 JSON Data Type: Source
Weird Bugs
DEFAULT NULL
x INT DEFAULT NULL #works in all versions
x TIMESTAMP DEFAULT NULL #works in some versions, and not in others
x TIMESTAMP NULL DEFAULT NULL #seems to work in all?
This seems like a bug, but it changed between devdb and cloud (so between 5.7.15 and 5.7.24)
LEFT JOINs act like JOINs sometimes when using ODBC date format
This is a bug in at least MySQL versions 5.6.10 - 5.6.21 that affects Crystal reports.
Reportedly, 5.5.31 is fine, and we know 5.6.22 and 5.7.6 have the bug fix (See Fogbugz Case 13362).
