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MySQL error code

MySQL error 6009

MySQL server error 6009 is ER_EXPLAIN_INTO_FOR_CONNECTION_NOT_SUPPORTED, reported with SQLSTATE 0A000.

EXPLAIN FOR CONNECTION does not support the INTO clause.
Error6009
NameER_EXPLAIN_INTO_FOR_CONNECTION_NOT_SUPPORTED
SQLSTATE0A000
GroupServer errors

In other databases

Source: MySQL 8.4 Error Reference