Thanks. how about the case as follows? idx_scan = 0 and idx_tup_read = 0 and idx_tup_fetch = 0, but idx_blks_read is not 0 and idx_blks_hit is not 0 ? regards On 3 Sep 2013, at 5:31 PM, Abdul Sayeed wrote:
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Thanks. how about the case as follows? idx_scan = 0 and idx_tup_read = 0 and idx_tup_fetch = 0, but idx_blks_read is not 0 and idx_blks_hit is not 0 ? regards On 3 Sep 2013, at 5:31 PM, Abdul Sayeed wrote:
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