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Data Model Questions /

Moderators: martimiz, Sean, Ed, biapar, Willr, Ingo, swaiba

Migrating to MySQL 5.7

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3 Posts   2460 Views


Community Member, 1 Post

3 March 2017 at 12:40am

Edited: 03/03/2017 12:42am

Hi all,

We have been trying to migrate one of our Silverstripe websites to a new server running MySQL 5.7. We have already updated our SS version to 3.5.3.

We've been experiencing issues with the sql_mode=only_full_group_by, example of error below:

[User Error] Uncaught SS_DatabaseException: Couldn't run query: SELECT DISTINCT "Download"."ClassName", "Download"."LastEdited", "Download"."Created", "Download"."Title", "Download"."ShowOnInstruments", "Download"."Restricted", "Download"."Index", "Download"."Slug", "Download"."FileID", "Download"."InstrumentID", "Download"."CategoryID", "Download"."ID", CASE WHEN "Download"."ClassName" IS NOT NULL THEN "Download"."ClassName" ELSE 'Download' END AS "RecordClassName" FROM "Download" WHERE ("CategoryID" = ?) GROUP BY FileID ORDER BY "Download"."Index" ASC, "Download"."Title" ASC Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'bolton-surgical.Download.ClassName' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
GET /downloads/
Line 55 in /srv/users/bolton/apps/bolton-surgical/public/framework/model/connect/DBConnector.php

We have already disabled strict sql mode in MySQL 5.7 on our server, which points to something inside SS overriding this setting.

Has anyone had experience with this issue? I did notice this page on the SS GitHub page: but I don't think it actually shares a solution?




Community Member, 19 Posts

12 July 2017 at 4:53pm

Hit same issue today with SS 3.6.0 & MySQL 5.7.18

SELECT DISTINCT YEAR("Date") AS "Year", MONTH("Date") AS "Month"
FROM "SiteTree_Live"
LEFT JOIN "Page_Live" ON "Page_Live"."ID" = "SiteTree_Live"."ID"
LEFT JOIN PortalUpdatePage_Live ON PortalUpdatePage_Live.ID = SiteTree_Live.ID
WHERE (SiteTree_Live.ParentID = ?)
 AND ("SiteTree_Live"."ClassName" IN (?, ?))
 AND ("SiteTree_Live"."SubsiteID" IN (0))
 AND ("SiteTree_Live"."Locale" = 'en_NZ')
GROUP BY YEAR("Date"), MONTH("Date")


Community Member, 19 Posts

12 July 2017 at 6:25pm

My issue was in CWP "DatedUpdateHolder" in the ExtractMonths function.
Changed to:

$dates = $updates->dataQuery()
			//->sort('Date', 'DESC')
            ->sort('Year', 'DESC')
            ->sort('Month', 'DESC')
				'Year' => 'YEAR("Date")',
				'Month' => 'MONTH("Date")',
			->addWhere('"Date" IS NOT NULL')