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= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
如下图所示： 1 2 3 4 5 6 7 gaussdb=# explain select a, count(1) from agg_t1 group by a; id | operation | E-rows | E-width | E-costs
如下图所示： 1 2 3 4 5 6 7 openGauss=# explain select a, count(1) from t1 group by a; id | operation | E-rows | E-width | E-costs
如下图所示： 1 2 3 4 5 6 7 openGauss=# explain select a, count(1) from t1 group by a; id | operation | E-rows | E-width | E-costs
| E-width | E-costs ----+-----------------------------------------------------------+--------+---------+--------- 1 | -> Streaming (type
= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
} catch (Exception e) { e.printStackTrace(); return null; } return conn; }; // 创建存储过程。
= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
示例如下： 十六进制字符串：685847ed1fe38e18f6b0e2b18c00edee 对应的HASH32数组：[104,88,71,237,31,227,142,24,246,176,226,177,140,0,237,238] 示例： gaussdb=# CREATE
= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
{ e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return rs; } } 父主题
如下图所示： 1 2 3 4 5 6 7 gaussdb=# explain select a, count(1) from agg_t1 group by a; id | operation | E-rows | E-width | E-costs
Peak Memory | A-width | E-width | E-costs ----+-----------------------------+-----------+----------+--------+-------------+
{ e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return rs; } } 父主题
{ e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return rs; } } 父主题
= null) { try { pst.close(); } catch (SQLException e1) { e1.printStackTrace(); } } e.printStackTrace
示例如下： 十六进制字符串：685847ed1fe38e18f6b0e2b18c00edee 对应的HASH32数组：[104,88,71,237,31,227,142,24,246,176,226,177,140,0,237,238] 示例： gaussdb=# CREATE
| E-memory | E-width | E-costs ----+-----------------------------------------+---------+----------+---------+------------ 1 | -> Streaming
id=ed7cc6166ec24360a5ed5c5c9c2ed726in14&name=hy&type=Enterprise&datastore_type=GaussDB&vpc_id=19e5d45d-70fd-4a91-87e9-b27e71c9891f&subnet_id=
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