Hi,
I am not familiar with MySQL, but we are currently looking at it.
Currently our software product supports Oracle, DB2, and we want to
see what it takes to also include MySQL.
One stumbling block we have come across is that it seems that the
CREATE TABLE command does not support the CHECK CONSTRAINT on a
column. I know there is such a thing as the ENUM column in MySQL, but
what if we want to set the constraint between two values.
Example:
CREATE TABLE TMPTABLE
COLONE CHAR(10),
COLTWO INT CHECK (COLTWO BETWEEN 1 AND 200)....
Is there such a thing in MySQL.
Thanks
Ron VanDerMaarel
4  10402 
Hi Ron,
In answer to your question, MySQL parses the CHECK constraint for
compatibility with other database systems, but is otherwise ignored, so in
short "No". Another downside is no triggers or stored procedures in ver 4.
Other than that is is a great DBMS.
Regards,
Adam
"Ron VanDerMaarel" <vd*****@yahoo.com> wrote in message
news:1b**************************@posting.google.c om... Hi,
I am not familiar with MySQL, but we are currently looking at it.
Currently our software product supports Oracle, DB2, and we want to
see what it takes to also include MySQL.
One stumbling block we have come across is that it seems that the
CREATE TABLE command does not support the CHECK CONSTRAINT on a
column. I know there is such a thing as the ENUM column in MySQL, but
what if we want to set the constraint between two values.
Example:
CREATE TABLE TMPTABLE
COLONE CHAR(10),
COLTWO INT CHECK (COLTWO BETWEEN 1 AND 200)....
Is there such a thing in MySQL.
Thanks
Ron VanDerMaarel
Yeah, but ver 5 is getting closer and closer
Bill
"Adam Cooper" <a@z.em> wrote in message
news:E2********************@wards.force9.net... Hi Ron,
In answer to your question, MySQL parses the CHECK constraint for
compatibility with other database systems, but is otherwise ignored, so in
short "No". Another downside is no triggers or stored procedures in ver 4.
Other than that is is a great DBMS.
Regards,
Adam
"Ron VanDerMaarel" <vd*****@yahoo.com> wrote in message
news:1b**************************@posting.google.c om... Hi,
I am not familiar with MySQL, but we are currently looking at it.
Currently our software product supports Oracle, DB2, and we want to
see what it takes to also include MySQL.
One stumbling block we have come across is that it seems that the
CREATE TABLE command does not support the CHECK CONSTRAINT on a
column. I know there is such a thing as the ENUM column in MySQL, but
what if we want to set the constraint between two values.
Example:
CREATE TABLE TMPTABLE
COLONE CHAR(10),
COLTWO INT CHECK (COLTWO BETWEEN 1 AND 200)....
Is there such a thing in MySQL.
Thanks
Ron VanDerMaarel
Hi Ron,
In answer to your question, MySQL parses the CHECK constraint for
compatibility with other database systems, but is otherwise ignored, so in
short "No". Another downside is no triggers or stored procedures in ver 4.
Other than that is is a great DBMS.
Regards,
Adam
"Ron VanDerMaarel" <vd*****@yahoo.com> wrote in message
news:1b**************************@posting.google.c om... Hi,
I am not familiar with MySQL, but we are currently looking at it.
Currently our software product supports Oracle, DB2, and we want to
see what it takes to also include MySQL.
One stumbling block we have come across is that it seems that the
CREATE TABLE command does not support the CHECK CONSTRAINT on a
column. I know there is such a thing as the ENUM column in MySQL, but
what if we want to set the constraint between two values.
Example:
CREATE TABLE TMPTABLE
COLONE CHAR(10),
COLTWO INT CHECK (COLTWO BETWEEN 1 AND 200)....
Is there such a thing in MySQL.
Thanks
Ron VanDerMaarel
Yeah, but ver 5 is getting closer and closer
Bill
"Adam Cooper" <a@z.em> wrote in message
news:E2********************@wards.force9.net... Hi Ron,
In answer to your question, MySQL parses the CHECK constraint for
compatibility with other database systems, but is otherwise ignored, so in
short "No". Another downside is no triggers or stored procedures in ver 4.
Other than that is is a great DBMS.
Regards,
Adam
"Ron VanDerMaarel" <vd*****@yahoo.com> wrote in message
news:1b**************************@posting.google.c om... Hi,
I am not familiar with MySQL, but we are currently looking at it.
Currently our software product supports Oracle, DB2, and we want to
see what it takes to also include MySQL.
One stumbling block we have come across is that it seems that the
CREATE TABLE command does not support the CHECK CONSTRAINT on a
column. I know there is such a thing as the ENUM column in MySQL, but
what if we want to set the constraint between two values.
Example:
CREATE TABLE TMPTABLE
COLONE CHAR(10),
COLTWO INT CHECK (COLTWO BETWEEN 1 AND 200)....
Is there such a thing in MySQL.
Thanks
Ron VanDerMaarel
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