查看greemplum资源队列状态SELECT * FROM gp_toolkit.gp_resqueue_status;
查看greemplum资源队列锁SELECT * FROM gp_toolkit.gp_locks_on_resqueue WHERE lorwaiting='true';
查看greemplum资源队列优先级select * from gp_toolkit.gp_resq_priority_statement;
查看greemplum所有连接 类似mysql SHOW PROCESSLISTselect * from pg_stat_activity; -- 所有状态的连接
greemplum磁盘使用，通过SQL查看Greenplum中用了多少空间select datname,pg_size_pretty(pg_database_size(datname)) from pg_database;
查看greemplum节点状态select * from gp_segment_configuration ttselect * from gp_segment_configuration tt where tt.status='d'; -- 状态为down
节点故障等历史信息select * from gp_configuration_history tt order by 1 desc ;
数据倾斜SELECT t1.gp_segment_id, t1.count_tatol, round(t1.count_tatol-(AVG(t1.count_tatol) over()) ,0)FROM ( SELECT gp_segment_id, COUNT (*) count_tatol FROM -- 要查的表 GROUP BY gp_segment_id ) t1order by 3
greemplum表或索引大小 (占用空间)select pg_size_pretty(pg_relation_size('gp_test'));
greemplum表和索引大小(占用空间)select pg_size_pretty(pg_total_relation_size('gp_test'));
greemplum查看指定数据库大小(占用空间)select pg_size_pretty(pg_database_size('postgres'));
greemplum所有数据库大小(占用空间)select datname,pg_size_pretty(pg_database_size(datname)) from pg_database;
查看greemplum数据分布情况select gp_segment_id,count(*) from gp_test group by gp_segment_id order by 1;
查看greemplum数据表更新时间SELECT *FROM pg_stat_last_operation, pg_classWHERE objid = oidAND relname = 'base_common'; -- 表名
通过sql 获取greemplum表的预估数据量select relname, reltuples::int as totalfrom pg_classwhere relname = 'base_common' and relnamespace = (select oid from pg_namespace where nspname = 'positions');
通过sql 获取greemplum获取分布键SELECT string_agg(att.attname,',' order by attrnums) as distribution FROM gp_distribution_policy a,pg_attribute att WHERE a.localoid ='bi_data.schoolmate_relations'::regclass and a.localoid = att.attrelid and att.attnum = any(a.attrnums);
通过sql获取 greemplum指定表结构SELECT attname, typname FROM pg_attribute INNER JOIN pg_class ON pg_attribute.attrelid = pg_class.oid INNER JOIN pg_type ON pg_attribute.atttypid = pg_type.oid INNER JOIN pg_namespace on pg_class.relnamespace=pg_namespace.oid -- WHERE pg_attribute.attnum > 0 AND attisdropped <> 't' AND pg_namespace.nspname='resumes' AND pg_class.relname= 'base_common'-- and pg_class.relname ~~* any(array['%some%', '%someelse']));order by pg_attribute.attnum
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