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SELECT field1,field2 FROM Database_1.MyTable
SELECT field1,field2 FROM Database_2.MyTable;
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# credit to http://dba.stackexchange.com/questions/20240/running-sql-query-on-all-databases
# mysql credential
# list of all databases
all_dbs="$(mysql -u $user -p$pass -Bse 'show databases')"
for db in $all_dbs
if test $db != "information_schema"
then if test $db != "mysql"
then mysql -u$user -p$pass $db -sN -e "UPDATE mytable SET myfield=REPLACE(myfield,'abc','xyz');"
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