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Fix for 'this is incompatible with sql_mode=only_full_group_by'

In order to run sql scripts which is not compatible with the sql_mode=only_full_group_by, we need to remove it from sql_mode.

Globally 

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

Logged Session only 

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

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