Is it possible to force a specific join order for tables?

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Réponse

Yes, by setting 'preserveJoinOrder' to TRUE in the 'cntl' parameter, you can force the tables to be joined in the specified order instead of the order chosen by the FedSQL query optimizer.
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execDirect

fedSql

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Other questions about execDirect
What is the default behavior for implicit pass-through in the execDirect action? How can I validate a FedSQL query without executing it? Which parameter is mandatory when using the execDirect action? What options are available to view the FedSQL query plan? How can I ensure that a query only runs if full implicit pass-through is achieved?
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