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Poor performance #1568
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Also check which database you are connecting to. If the query has any collation in it and RDMP is connecting to |
Same SQL executed via SSMS runs in a tenth of the time, so not an SQL level issue :( |
Very slow reading data from SQL compared to SSMS - possibly DataTable/pipelining bottleneck?
Investigate batching DataTable writes, clone instead of repeating chunk metadata, refactor as IEnumerable instead of repeatedly calling DataTable GetChunk.
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