Difference between revisions of "MySQL Features & Bugs"
From ISoft Wiki
Jump to navigationJump to search
Daytonlowell (talk | contribs) |
Daytonlowell (talk | contribs) |
||
| Line 14: | Line 14: | ||
===LEFT JOINs act like JOINs sometimes when using ODBC date format=== | ===LEFT JOINs act like JOINs sometimes when using ODBC date format=== | ||
This is [https://bugs.mysql.com/bug.php?id=69233 a bug in at least MySQL versions 5.6.10 - 5.6.12] that affects Crystal reports. | This is [https://bugs.mysql.com/bug.php?id=69233 a bug in at least MySQL versions 5.6.10 - 5.6.12] that affects Crystal reports. | ||
<br>Reportedly, 5.5.31 is fine, and we know 5.6.20 has the bug fix (See Fogbugz case 13362). | <br>Reportedly, 5.5.31 is fine, and we know 5.6.20 has the bug fix (See Fogbugz {{case|13362}}). | ||
Revision as of 13:58, 15 March 2019
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 - 5.6.12 that affects Crystal reports.
Reportedly, 5.5.31 is fine, and we know 5.6.20 has the bug fix (See Fogbugz Case 13362).
