如何编写更好的SQL查询语句
何编好复制EXPLAIN SELECT * FROM one_million; QUERY PLAN _________________________________________________ Seq Scan on one_million (cost=0.00..18584.82 rows=1025082 width=36) (1 row) 1.2.3.4.5.6.7.8.
何编好复制EXPLAIN SELECT * FROM one_million; QUERY PLAN _________________________________________________ Seq Scan on one_million (cost=0.00..18584.82 rows=1025082 width=36) (1 row) 1.2.3.4.5.6.7.8.