Skip to content

Instantly share code, notes, and snippets.

@miratcan
Last active August 31, 2023 00:06
Show Gist options
  • Save miratcan/4276757 to your computer and use it in GitHub Desktop.
Save miratcan/4276757 to your computer and use it in GitHub Desktop.
Small python script that converts character sets to utf8 in all databases and tables. My solution for "Illegal mix of collations" errors. (http://stackoverflow.com/questions/3029321/how-to-solve-illegal-mix-of-collations-in-mysql)
from MySQLdb import connect
conn = connect(user="[USER]", passwd= "[PASSWORD]")
cur = conn.cursor()
cur.execute("show databases;")
dbs_to_update = filter(
lambda db: db not in ('information_schema', 'mysql', 'performance_schema'),
[dbname[0] for dbname in cur.fetchall()])
for db_to_update in dbs_to_update:
print "Updating %s db" % db_to_update
print "-" * (12 + len(db_to_update))
cur.execute("use %s" % db_to_update)
cur.execute("show tables;")
tables_to_update = [t[0] for t in cur.fetchall()]
for table_to_update in tables_to_update:
query = "ALTER TABLE %s CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;" % table_to_update
cur.execute(query)
print table_to_update, "updated"
@user1007017
Copy link

error in line 22 - should be:
cur.execute(query)

@miratcan
Copy link
Author

fixed

@cappie
Copy link

cappie commented Jan 15, 2015

to support tables with views, change line 16 to:

cur.execute("show full tables where table_type = 'BASE TABLE'")

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment