[Enhancement](ExternalTable)Optimize the performance of getCachedRowCount when reading ExternalTable (#41659) #41959
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…ount when reading ExternalTable (apache#41659) Because ExternalTable will initialize the previously uninitialized table when `getCachedRowCount()`, which is unnecessary. So for the uninitialized table, we directly return -1. This will increase the speed of our query `information_schema.tables`.
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bp #41659
Proposed changes
Because ExternalTable will initialize the previously uninitialized table when
getCachedRowCount(), which is unnecessary. So for the uninitialized table, we directly return -1.This will increase the speed of our query
information_schema.tables.