use of SQL /+MATERIALIZE/ with In Database Tools

Why does the In Database 'Connect In-DB' tool not allow the use of 'Materialize' in a sql statement while the regular 'Input Data' tool will?

With Cust as
(select /*+MATERIALIZE*/
sto_cust_seq, etc..etc..

That is to say, I get a 'DataWrapOCI: unable to prepare the query' error at the 'Data Stream Out' tool.

Output

In Database

In-Database

Accepted answers

CharlieS

It's my understanding that the In-DB tools will write temporary tables as a part of their normal operation and that specifying this command isn't necessary.

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Multiple-Queries-In-Database/td-p/342464

All comments

CharlieS

It's my understanding that the In-DB tools will write temporary tables as a part of their normal operation and that specifying this command isn't necessary.

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Multiple-Queries-In-Database/td-p/342464

Number4

Thanks for pointing me to that. It makes sense.

Maybe it's my companies servers, but I've found using multiple In-Database 'Connect In-DB' inputs and joining them in-database is slower than using the Data Stream Out and using a regular join.

While the In-Database 'Connect In-DB' is faster with most of our tables, on some of them using the Input Data tool with 'Materialize' is significantly faster.

Thank you for your answer.

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