Mysql 错误代码: 在 MySQL Workbench UPDATE 过程中的1175

I found the answer. The problem was that I have to precede the table name with the schema name. i.e, the command should be:

UPDATE schemaname.tablename SET columnname=1;

Thanks all.

It looks like your MySql session has the safe-updates option set. This means that you can't update or delete records without specifying a key (ex. primary key) in the where clause.

Try:

SET SQL_SAFE_UPDATES = 0;

Or you can modify your query to follow the rule (use primary key in where clause).

Follow the following steps before executing the UPDATE command: In MySQL Workbench

1. Go to Edit --> Preferences
2. Click "SQL Editor" tab and uncheck "Safe Updates" check box
3. Query --> Reconnect to Server // logout and then login
4. Now execute your SQL query

p.s., No need to restart the MySQL daemon!

SET SQL_SAFE_UPDATES=0;
UPDATE tablename SET columnname=1;
SET SQL_SAFE_UPDATES=1;

In the MySQL Workbech version 6.2 don't exits the PreferenceSQLQueriesoptions.

All that's needed is: Start a new query and run:

SET SQL_SAFE_UPDATES = 0;

Then: Run the query that you were trying to run that wasn't previously working.

No need to set SQL_SAFE_UPDATES to 0, I would really discourage it to do it that way. Just add in the WHERE clause a KEY-value that matches everything like a primary-key comparing to 0, so instead of writing:

UPDATE customers SET countryCode = 'USA'
    WHERE country = 'USA';               -- which gives the error, you just write:

UPDATE customers SET countryCode = 'USA'
    WHERE (country = 'USA' AND customerNumber <> 0); -- Because customerNumber is a primary key you got no error 1175 any more.

Now you can be assured every record is updated like you expect.

Since the question was answered and had nothing to do with safe updates, this might be the wrong place; I'll post just to add information.

I tried to be a good citizen and modified the query to use a temp table of ids that would get updated:

create temporary table ids ( id int )
    select id from prime_table where condition = true;
update prime_table set field1 = '' where id in (select id from ids);

Failure. Modified the update to:

update prime_table set field 1 = '' where id <> 0 and id in (select id from ids);

That worked. Well golly -- if I am always adding where key <> 0 to get around the safe update check, or even set SQL_SAFE_UPDATE=0, then I've lost the 'check' on my query. I might as well just turn off the option permanently. I suppose it makes deleting and updating a two step process instead of one.. but if you type fast enough and stop thinking about the key being special but rather as just a nuisance..

If you are in a safe mode, you need to provide id in where clause. So something like this should work!

UPDATE tablename SET columnname=1 where id>0

True, this is pointless for the most examples. But finally, I came to the following statement and it works fine:

update tablename  set column1 = '' where tablename .id = (select id from tablename2 where tablename2.column2 = 'xyz');

The simplest solution is to define the row limit and execute. This is done for safety purposes.

1. Preferences...
2. "Safe Updates"...
3. Restart server

This is for Mac, but must be same for other OS except the location of the preferences.

The error we get when we try an unsafe DELETE operation

On the new window, uncheck the option Safe updates

Then close and reopen the connection. No need to restart the service.

Now we are going to try the DELETE again with successful results.

So what is all about this safe updates? It is not an evil thing. This is what MySql says about it.

Using the --safe-updates Option

For beginners, a useful startup option is --safe-updates (or --i-am-a-dummy, which has the same effect). It is helpful for cases when you might have issued a DELETE FROM tbl_name statement but forgotten the WHERE clause. Normally, such a statement deletes all rows from the table. With --safe-updates, you can delete rows only by specifying the key values that identify them. This helps prevent accidents.

When you use the --safe-updates option, mysql issues the following statement when it connects to the MySQL server:

SET sql_safe_updates=1, sql_select_limit=1000, sql_max_join_size=1000000;

It is safe to turn on this option while you deal with production database. Otherwise, you must be very careful not accidentally deleting important data.

Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Editor and reconnect.

Turn OFF "Safe Update Mode" temporary

SET SQL_SAFE_UPDATES = 0;
UPDATE options SET title= 'kiemvieclam24h' WHERE url = 'http://kiemvieclam24h.net';
SET SQL_SAFE_UPDATES = 1;

Turn OFF "Safe Update Mode" forever

Mysql workbench 8.0:

MySQL Workbench => [ Edit ] => [ Preferences ] -> [ SQL Editor ] -> Uncheck "Safe Updates"

Old version can:

MySQL Workbench => [Edit] => [Preferences] => [SQL Queries]