ERROR: VALUE too long FOR TYPE CHARACTER VARYING(9) 改变表或者列 当你需要改变一个域的定义时,你可以使用ALTER这一 SQL 关键字。例如,如果你想改变wordlist域中最多只能有 9 个字符的限制,你可以重新设置这个数据类型。 exampledb=> ALTER TABLE my_sample_table ALTER COLUMN
TYPE U U \dT+ PostgreSQL 中使用 aclitem 来表示一个具体的数据库对象上的权限。对于 database 和 schema,aclitem 存储在 pg_database.datacl 和 pg_namespace.nspacl 中,对于 table,view 等其他数据库对象,pg_class.relacl 中保存了 aclitem 的一个 list。对于列级别的权限,aclitem 将保存在 pg_attrib...
分区键离散,可以使用PARTITION BY LIST。按字符串匹配决定落入哪个分区。 分区键连续,比如整形、日期等,可以使用PARTITION BY RANGE。 分区键数据随机无规律或规律简单,可以使用PARTITION BY HASH,用hash函数打散数据。 分区键数据随机有规律,规律复杂,可以使用多级混合分区,使数据平均分散、减少耦合。 每个分区都是一个...
pg_class会以oid 为主键建索引,方便查找NameDatarelname;// relation 名字Oidrelnamespace;// 所处的 pg_namespace oid,用来和 pg_namespace系统表建立关联Oidreltype;// 对象类型,用于和pg_type系统表建立关联...Oidrelam;// am 类型,比如是heap or 其他的,也是和 pg_amthod...
echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list sudo apt-get update sudo apt-get install nodejs -y 1.
{"Version":"1","Statement":[ {"Effect":"Allow","Action":["vpc:DescribeVpcAttribute","vpc:DescribeRouteTableList","vpc:DescribeVSwitchAttributes","vpc:DeleteVpc","vpc:DeleteVSwitch","vpc:CreateVpc","vpc:CreateVSwitch"],"Resource":"*"}, {"Action":"rds:*","Resource...
In theDatabaseslist, choose the name of the new PostgreSQL DB instance to show its details. The DB instance has a status ofCreatinguntil it is ready to use. When the status changes toAvailable, you can connect to the DB instance. Depending on the DB instance class and the amount of...
Listof functions Schema |Name | Result data type | Argument data types ---+---+---+--- pg_catalog | has_database_privilege | boolean |name, oid, text pg_catalog | has_database_privilege | boolean |name, text, text pg_catalog | has_database_privilege...
edit-config Edit cluster configuration failover Failover to a replica flush Discard scheduled events history Show the history of failovers/switchovers list List the Patroni members for a given Patroni pause Disable auto failover query Query a Patroni PostgreSQL member reinit Reinitialize cluster me...
List of relations Schema |Name|Type|Owner|Storage---+---+---+---+--- gp_toolkit |gp_log_command_timings|view|digoal|none-- 统计 gp_toolkit |gp_log_database|view|digoal|none-- 这个包含当前数据库日志 gp_toolkit |gp_log_master_concise|view|digoal|none-- 统计 gp_toolkit...