azexcy commented on issue #24291:
URL: 
https://github.com/apache/shardingsphere/issues/24291#issuecomment-1439925457

   PostgreSQL estimated count maybe greater than actual, and schema needs to be 
considered
   ```
   postgres=# select relname,reltuples::integer from pg_class where 
relname='sbtest';
    relname | reltuples
   ---------+-----------
    sbtest  |        -1
    sbtest  | 100000080
   (2 rows)
   
   postgres=# select count(*) from test.sbtest;
      count
   -----------
    100000000
   (1 row)
   
   ```


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