Error Code: 1055 incompatible with sql_mode=only_full_group_by

问题

I have been having issues switching to an offline version of the Lahman SQL baseball database. I was using a terminal embed into an EDX course. This command runs fine on the web terminal:

SELECT concat(m.nameFirst,concat(" ",m.nameLast)) as Player,
    p.IPOuts/3 as IP,
    p.W,p.L,p.H,p.BB,p.ER,p.SV,p.SO as K,
    p.IPOuts+p.W*5+p.SV+p.SO-p.BB-p.L-p.H as PTS,
    p.yearID as Year
FROM Pitching p
Inner Join Master m
    ON p.playerID=m.playerID
WHERE p.yearID=2014 AND p.IPOuts>=50
GROUP BY m.playerID
ORDER BY PTS DESC;

Which is running SQL 5.5.46, but when I use my offline version running 5.7.10 I get the following error code:

Error Code: 1055. Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'stats.m.nameFirst' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

I've been reading a lot of solutions to people's problems, but they haven't helped in this case. That's never happened before, so I think this is either super obvious or maybe I'm getting ok at coding. Anyway, anyone know how to fix this?

回答1:

In 5.7 the sqlmode is set by default to:

 ONLY_FULL_GROUP_BY,NO_AUTO_CREATE_USER,STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION

To remove the clause ONLY_FULL_GROUP_BY you can do this:

SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

This supposed you need to make that GROUP BY with non aggregated columns.

Regards

回答2:

The accepted solution above didn't work for me on version 5.7.9, for osx10.9 (x86_64).

Then the following worked -

set global sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

回答3:

For other use cases: You don't necessarily have to disable ONLY_FULL_GROUP_BY Given a case like this, According to mysql docs, "This query is invalid if name is not a primary key of t or a unique NOT NULL column. In this case, no functional dependency can be inferred and an error occurs:"

SELECT name, address, MAX(age) FROM t GROUP BY name;
ERROR 1055 (42000): Expression #2 of SELECT list is not in GROUP
BY clause and contains nonaggregated column 'mydb.t.address' which
is not functionally dependent on columns in GROUP BY clause; this
is incompatible with sql_mode=only_full_group_by

Instead you can use this ANY_VALUE('my_column_name') my_column_name Quoting the mysql docs, "In this case, MySQL ignores the nondeterminism of address values within each name group and accepts the query." Use ANY_VALUE() to refer to address:

SELECT name, ANY_VALUE(address), MAX(age) FROM t GROUP BY name;

回答4:

If you do as the picked answer, the @sql_mode may be like this—

',STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'.

there's a comma in front of the 'STRICT_TRANS_TABLES' string.

Just execute this—

set @@sql_mode = 
'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

it works.

Also, you can try following exp,

SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY,','');

I didn't test it, but I guess it may works.

来源：https://stackoverflow.com/questions/36207042/error-code-1055-incompatible-with-sql-mode-only-full-group-by

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