Description: change the definition of a sequence generator Syntax: ALTER SEQUENCE [ IF EXISTS ] name [ AS data_type ] [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ] [ START [ WITH ] start ] [ RESTART [ [ WITH ] restart ...
Column | Type | Value ---+---+--- sequence_name | name | sql_tbl_serial2_a last_value | bigint | 1 start_value | bigint | 1 increment_by | bigint | 1 max_value | bigint | 9223372036854775807 min_value | bigint | 1 cache_value | bigint | 1 log_cnt | bigint | 0 is...
postgresql数据库相比较MySQL或者oracle,一个是开源优势,另一个就是postgresql数据库的命令行更为丰富,因此,数据库的管理工作更为方便,快捷,尤其是postgresql的短命令就可以基本满足日常的数据库维护,管理工作了。 ###注:短命令通常是用在pg的命令行客户端的,也就是psql -U用户 -p 端口 -h 数据库IP 登陆数据库...
In PostgreSQL, a commonly encountered error is the “nextval: reached minimum value” error, which occurs when working with descending sequences. Users encounter this error when a sequence reaches its minimum value and they attempt to generate a new value. Postgres provides several solution...
# These are relevant when logging to syslog: #syslog_facility = 'LOCAL0' #syslog_ident = 'postgres' #syslog_sequence_numbers = on #syslog_split_messages = on # This is only relevant when logging to eventlog (win32): # (change requires restart) #event_source = 'PostgreSQL' # - When...
Allow specification of the recovery stopping point by Log Sequence Number (LSN) in recovery.conf (Michael Paquier) Previously the stopping point could only be selected by timestamp or XID. Improve performance of hot standby replay with better tracking of Access Exclusive locks (Simon Riggs, David...
Command:ALTERSEQUENCE Description: change the definitionofa sequence generator Syntax:ALTER SEQUENCE[IF EXISTS] name[INCREMENT [ BY]increment ][MINVALUE minvalue | NO MINVALUE][MAXVALUE maxvalue | NO MAXVALUE][START [ WITH]start ][RESTART [ [ WITH]restart ] ][CACHE cache][[ NO]CYCLE ][OW...
select nextval('t_a_seq'::regclass);ALTER SEQUENCE name [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ] [ START [ WITH ] start ] [ RESTART [ [ WITH ] restart ] ]
value_needed", ERRCODE_FDW_DYNAMIC_PARAMETER_VALUE_NEEDED }, { "fdw_function_sequence_error", ERRCODE_FDW_FUNCTION_SEQUENCE_ERROR }, { "fdw_inconsistent_descriptor_information", ERRCODE_FDW_INCONSISTENT_DESCRIPTOR_INFORMATION }, { "fdw_invalid_attribute_value", ERRCODE_FDW_INVALID_ATTRIBUTE_VALUE ...
PostgreSQL天然集群,多个集群可以组成集簇,有点类似军队的连、团、旅这样的组织规则。对于我们日常学习使用的单节点则是单个集簇单个集群,自己就是集群。 PostgreSQL如何管理这种集群规则?答案是通过一个无符号4个字节的标识进行管理,一个对象就是集群里的一个数据库。