使用druid解析器，发现explain节点数据有问题：
127.0.0.1/root:[TESTDB> EXPLAIN SELECT * FROM test WHERE id >= 11000 AND id <= 1111100;
+-----------+--------------------------------------------------------+
| DATA_NODE | SQL |
+-----------+--------------------------------------------------------+
| dn1 | SELECT * FROM test WHERE id >= 11000 AND id <= 1111100 |
+-----------+--------------------------------------------------------+
1 row in set (0.12 sec)
5个节点，只定位到一个节点。
注释掉druid解析器后：
127.0.0.1/root:[TESTDB> EXPLAIN SELECT * FROM test WHERE id >= 11000 AND id <= 1111100;
+-----------+----------------------------------------------------------------------+
| DATA_NODE | SQL |
+-----------+----------------------------------------------------------------------+
| dn1 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 |
| dn2 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 |
| dn3 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 |
| dn4 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 |
| dn5 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 |
+-----------+----------------------------------------------------------------------+
5 rows in set (0.00 sec)
wdw1206
commented
9 years ago
使用druid解析器，发现explain节点数据有问题： 127.0.0.1/root:[TESTDB> EXPLAIN SELECT * FROM test WHERE id >= 11000 AND id <= 1111100; +-----------+--------------------------------------------------------+ | DATA_NODE | SQL | +-----------+--------------------------------------------------------+ | dn1 | SELECT * FROM test WHERE id >= 11000 AND id <= 1111100 | +-----------+--------------------------------------------------------+ 1 row in set (0.12 sec) 5个节点，只定位到一个节点。 注释掉druid解析器后： 127.0.0.1/root:[TESTDB> EXPLAIN SELECT * FROM test WHERE id >= 11000 AND id <= 1111100; +-----------+----------------------------------------------------------------------+ | DATA_NODE | SQL | +-----------+----------------------------------------------------------------------+ | dn1 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 | | dn2 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 | | dn3 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 | | dn4 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 | | dn5 | SELECT * FROM test WHERE (id >= 11000) AND (id <= 1111100) LIMIT 100 | +-----------+----------------------------------------------------------------------+ 5 rows in set (0.00 sec)
mycat版本1.3.0.1，linux-x64