Check if mysql database exists, perform action based on result

Question

Is it possible from within a bash script to check if a mysql database exists. Depending on the result then perform another action or terminate the script?

Answer 1

mysqlshow is a good tool for this, here is test to check the presence of the database database_name

if mysqlshow -p${MYSQL_ROOT} 2>/dev/null| grep -q "database_name"
then
    echo "Database exist."
else
    echo "Database does not exist."
fi

Or a simple oneliner

echo "Database "`mysqlshow -p${MYSQL_ROOT} 2>/dev/null| grep -q "database_name"  || echo "does not "`"exist."