Re: Regarding NOT NULL Option for Table Fields....

2005-06-13 Thread mfatene
Hi ashok, With check, you could do iy, but they don't work with mysql. The only solution i ican see is an application control or : drop table if exists tempo; create table tempo like mine; insert into tempo values('',''); insert into mine select * from tempo where length(...)>0; drop table tempo;

Re: Regarding NOT NULL Option for Table Fields....

2005-06-12 Thread mfatene
Hi, '' or empty string is not a null in mysql. This is true for Oracle ! this simple test lets you understand : * Without NULLs mysql> create table notnull (t varchar(10) NOT NULL); Query OK, 0 rows affected (0.14 sec) mysql> insert into notnull values('test1'); Query OK, 1 row af

Re: Regarding NOT NULL Option for Table Fields....

2005-06-12 Thread Michael Stassen
Ashok Kumar wrote: Hi friends, I'm having one doubt on "NOT NULL" specification for the table field properties. That is i have created on table-mine which contains name(Not Null) and pwd(Not Null). Now I intended to execute the following query. "insert into mine values('','')" This means that