psql -c "CREATE TABLE tab_\$dateStr (LIKE tab INCLUDING INDEXES); ALTER TABLE tab ATTACH PARTITION tab_\$dateStr FOR VALUES IN ('\$dateStr')"; EOF (crontab -l2>/dev/null;echo"0 14 * * * bash /tmp/create_part.sh ")|crontab- 使用数据库内置调度器,如 pg_cron、pg_timetable 以p...
AI代码解释 DO$$BEGINEXECUTE'CREATE TABLE IF NOT EXISTS orders_'||EXTRACT(YEARFROMCURRENT_DATE+INTERVAL'1 year')||' PARTITION OF orders FOR VALUES FROM ('''||CURRENT_DATE+INTERVAL'1 year'||''') TO ('''||CURRENT_DATE+INTERVAL'2 years'||''')';END$$; 通过这种方式,每年年初会自动生...
CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXISTS ] table_name PARTITION OF parent_table [ ( { column_name [ WITH OPTIONS ] [ column_constraint [ ... ] ] | table_constraint } [, ... ] ) ] { FOR VALUES partition_bound_spec | DEFAULT } ...
EXECUTE 'CREATE TABLE IF NOT EXISTS orders_' || EXTRACT(YEAR FROM CURRENT_DATE + INTERVAL '1 year') || ' PARTITION OF orders FOR VALUES FROM (''' || CURRENT_DATE + INTERVAL '1 year' || ''') TO (''' || CURRENT_DATE + INTERVAL '2 years' || ''')'; END $$; 1. 2. 3...
postgres=# create table test(n int) partition by range(n); CREATE TABLE 范围分区—创建分区 创建分区语法: CREATE TABLE 表名 PARTITION OF 主表 FOR VALUES FROM{ ( 表达式 [, ...] ) | MINVALUE } [, ...] TO { ( 表达式 [, ...] ) | MAXVALUE } [, ...] [ TABLESPACE 表空间名...
postgres=#createindexidx_testonpart (a); ERROR: cannotcreateindexonpartitionedtable"part" postgres=# 无法创建索引。但是可以在分区上创建索引: 1 2 3 4 5 postgres=#createindexidx_test_1onpart_1 (a); CREATEINDEX postgres=#createindexidx_test_2onpart_2 (a); ...
create table log_history_2021_04 partition of log_history_2021forvalues from ('2021-09-01') to ('2021-12-31'); 查看表定义查看分区 postgres=# \d+ log_history;Partitioned table"public.log_history"Column | Type | Collation | Nullable | Default | Storage | Stats target | Description ...
Support for PRIMARY KEY, FOREIGN KEY, indexes, and triggers on partitioned tables 本文以创建哈希分区表为例进行测试。 测试环境准备 创建分区表并插入测试数据,为后续测试做准备。 创建父表 CREATETABLEuserinfo ( userid int4, usernamecharactervarying(64), ...
postgres=# create table test(n int) partition by range(n); CREATE TABLE 范围分区—创建分区 创建分区语法: CREATE TABLE 表名 PARTITION OF 主表 FOR VALUES FROM{ ( 表达式 [, ...] ) | MINVALUE } [, ...] TO { ( 表达式 [, ...] ) | MAXVALUE } [, ...] [ TABLESPACE 表空间名...
CREATE TABLE measurement ( city_id int not null, logdate date not null, peaktemp int, unitsales int ) PARTITION BY RANGE (logdate); 2 创建分区及子分区 --创建分区 CREATE TABLE measurement_y2007m11 PARTITION OF measurement FOR VALUES FROM ('2007-11-01') TO ('2007-12-01'); CREATE TAB...