Jim Campbell wrote:
> Transactions and foreign keys are available in MySQL by using the InnoDB 
> engine.

But the OP said MyISAM.


> Subqueries might be "doable" via a workaround, be it through 
> more complex joins, CF QoQ's or a mixture of the two (Don't know about 
> the performance hit, though).

Some subqueries can be rewritten, others not.


> Is the "decimal" data type that different from MySQL's "double"?

Run the following in MySQL and please show us the result:

CREATE TABLE testTable (testField DECIMAL(4,2));
INSERT INTO testTable (testField) VALUES (1.1);
INSERT INTO testTable (testField) VALUES (22.22);
INSERT INTO testTable (testField) VALUES (333.333);
INSERT INTO testTable (testField) VALUES (4444.4444);
INSERT INTO testTable (testField) VALUES (55555.55555);
SELECT * FROM testTable;


> I also thought NOT NULL was supported.  I guess 
> I'll have to go home and try it now... :)

The default value will be inserted instead of the record being 
rejected.

Jochem



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