First of all, don't just take my word for it! Test my suggestion out with this:
select CONCAT('alter table ',TABLE_SCHEMA,'.',TABLE_NAME,' charset=utf8;') from information_schema.TABLES WHERE TABLE_SCHEMA != 'information_schema' limit 10; select CONCAT('alter table ',TABLE_SCHEMA,'.',TABLE_NAME,' alter column ',COLUMN_NAME,' charset=utf8;') from information_schema.COLUMNS WHERE TABLE_SCHEMA != 'information_schema' limit 10;
If you feel good with the outcome of that, remove the limit clauses and save the output to an SQL script or, get fancy and pipe the output directly to mysql similar to what I demonstrate here. That would look like this:
mysql -B -N --host=prod-db1 --user=admin --password=secret -e "select CONCAT('alter table ',TABLE_SCHEMA,'.',TABLE_NAME,' charset=utf8;') from information_schema.TABLES WHERE TABLE_SCHEMA != 'information_schema'; select CONCAT('alter table ',TABLE_SCHEMA,'.',TABLE_NAME,' alter column ',COLUMN_NAME,' charset=utf8;') from information_schema.COLUMNS WHERE TABLE_SCHEMA != 'information_schema';" | mysql --host=prod-db1 --user=admin --password=secret
When you start thinking about using valid SQL to generate valid SQL, it changes the whole game. You will be amazed by how many uses you find for it.
If you're asking how to run more than one statement with a single mysql command, you can either simply separate them by semicolons:
$ mysql -e 'select 1; select 2'
+---+
| 1 |
+---+
| 1 |
+---+
+---+
| 2 |
+---+
| 2 |
+---+
or you can create a file containing the SQL statements and run that:
$ mysql < change_password.sql
Best Answer
SELECT statements will return number of rows into your shell variable.
For DELETE statements just append a
SELECT ROW_COUNT()after your mysql query, so it would be in your example like:echo $RemoveID ROW_COUNT() 1