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此扩展没有在 php.ini 中定义配置指令。
You may be interested in seeing the SQL statements that are generated
in order to apply changes back to the database. At the top of the
SDO/DAS/Relational.php
you will find a number of constants which control whether the process
of constructing and executing the SQL statements is to be traced.
Try setting
DEBUG_EXECUTE_PLAN
to TRUE
to see the generated SQL statements.