postgresql中,许多ddl语句支持if exists、if not exists。例如: postgres=# create table if not exists abce(); CREATE TABLE postgres=# drop table if exists abce; DROP
INSERT INTO alerts VALUES (alertname,desk,creationdate) ON CONFLICT (alertname) DO UPDATE SET desk = alerts.desk; END; and that my table is empty, nothing happens, but when there are some values within the table, this does the trick. The question is, how to do insert if...
ifnotexists(select1from t where id=1)insert intot(id,update_time)values(1,getdate())elseupdate t set update_time=getdate()where id=1或者ifexists(select1from t where id=1)insert intot(id,update_time)values(1,getdate())elseupdate t set update_time=getdate()where id=1 1. 2. 3....
startTime :=curMM||'01 00:00:00.000';endTime :=to_char(startTime::timestamp+interval'1 month','YYYY-MM-DD HH24:MI:SS.MS');strSQL :='CREATE TABLE IF NOT EXISTS '||TG_RELNAME||'_'||curMM||' ( CHECK('||time_column_name||'>='''||startTime||''' AND '||time_column_na...
CREATE TABLE IF NOT EXISTS t_trigger ( id int8 not null, action_params text, bindings varchar(200), PRIMARY KEY (id) ); INSERT INTO t_trigger VALUES ('10002955', '{"className":"ActionParamsOfRpc","service":"NapDeviceService_PullHitCountConfig","params":{"deviceType":"sky_firewall",...
CREATE SEQUENCE test START 1;create table if not exists testpg ("id" int8 not null DEFAULT nextval('test'::regclass),CONSTRAINT "user_vendorcode_pkey" PRIMARY KEY ("id"),"suijishuzi" VARCHAR ( 255 ) COLLATE "pg_catalog"."default"); ...
) showuseage exit 1 ;; esac done BAKUP_SQL=" create table if not exists pg_log_:bak_log_span as select :today::varchar(8) as bak_date ,* from pg_log where 1 = 2 ; delete from pg_log_:bak_log_span where to_char(log_time,'yyyymmdd')::numeric = ${BAKUP_DATE} ; insert ...
grant select,insert,update,deleteon all tablesinschemapublicto 用户名; 撤回权限 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #撤回在public模式下的权限 revoke select on all tablesinschemapublicfrom 用户名;#撤回在information_schema模式下的权限 ...
PostgreSQL 引擎允许 ClickHouse 对存储在远程 PostgreSQL 服务器上的数据执行SELECT和INSERT查询. 创建一张表 CREATETABLE[IFNOTEXISTS][db.]table_name[ONCLUSTERcluster](name1[type1][DEFAULT|MATERIALIZED|ALIASexpr1][TTLexpr1],name2[type2][DEFAULT|MATERIALIZED|ALIASexpr2][TTLexpr2],...)ENGINE=PostgreSQL...
GRANT SELECT, UPDATE, INSERT, DELETE ON TABLE public.user TO mydata_dml; GRANT SELECT ON TABLE public.user TO mydata_qry; 删除账号 #撤回在public模式下的权限 revoke select on all tables in schema public from 用户名; #撤回在information_schema模式下的权限 ...