On Fri, Sep 17, 2010 at 10:15:06AM +0800, kun ren wrote:

Dear all, I have a problem on create index command, my table is t1,and have two column, c1 and c2. when I execute the sql command "create index index_c1 on t1(c1);" but the MonetDB said "Segmentation fault", what the question?

segfault always meant there is a bug somewhere.

however, the simplest test that mathces your discription works fine for me:

sql>create table t1 (c1 int, c2 int); operation successful sql>create index index_c1 on t1(c1); operation successful sql>

Hence, the question is, whether you could provide some more background about your system & setup, e.g., version of MonetDB, HW & OS, whether the table contains data, etc.

`mserver5 --version` should answer the first two questions ...

Stefan

Best regards!

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