Qt MySQL

[weixj2003ld]

When I create a table in my application with

....
create table if not exists table_name
...
UPHOLE_DEPTH  float(16,1)          unsigned zerofill default NULL,
....

....
create table if not exists table_name
...
UPHOLE_DEPTH  float(16,1)          unsigned zerofill default NULL,
....

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When I insert a record into the talbe,error:
Out of range value for column 'UPHOLE_DEPTH' at row 1 QMYSQL3: unable to execute statement