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
update emp set sal = sal +100 where empno = 7444 ; if sql%notfound then dbms_output.put_line('没有此人'); end if ; end
configure: WARNING: *** Without Bison you will not be able to build PostgreSQL from CVS nor *** change any of the parser definition files. You can obtain Bison from *** a GNU mirror site. (If you are using the official distribution of *** PostgreSQL then you do not need to worry ...
如果执行的过程中报如下错误: configure: error: readline library not found 解决方案: 安装失败时会提示执行./configure加上--without-readline选项,不编译readline: If you have readline already installed, see config.log for details on the failure. It is possible the compiler isn't looking in the proper...
{ "fdw_column_name_not_found", ERRCODE_FDW_COLUMN_NAME_NOT_FOUND }, { "fdw_dynamic_parameter_value_needed", ERRCODE_FDW_DYNAMIC_PARAMETER_VALUE_NEEDED }, { "fdw_function_sequence_error", ERRCODE_FDW_FUNCTION_SEQUENCE_ERROR }, { "fdw_inconsistent_descriptor_information", ERRCODE_FDW_...
DECLARE V_deptno emp.deptno%TYPE :=&p_deptno; BEGIN DELETE FROM emp WHERE deptno=v_deptno; IF SQL%NOTFOUND THEN DELETE FROM dept WHERE deptno=v_deptno; END IF; END; §4.1.3 游标修改和删除操作 游标修改和删除操作是指在游标定位下,修改或删除表中指定的数据行。这时,要求游标查询语句中必须...
if not found then raise notice 'no data for appid:% , tag:% ', v_appid, v_tag; return; end if; -- 获取实时数据,删除实时数据,聚合实时数据,合并到TAGS -- 建议RDS PostgreSQL新增delete|update limit语法,抛弃with id>=min_id for update ...
No pg_config...trying anyway.If building fails,pleasetryagainwith--with-pg-config=/path/to/pg_config checkingforlibpq-fe.h...no Can't find the 'libpq-fe.h header***extconf.rb failed***Could not create Makefile due to some reason,probably lackofnecessary ...
将RPM和源码安装两种方式的操作流程进行对比,会发现源码安装需要处理很多依赖问题的琐事,显然比较麻烦,这里个人更偏向官方推荐的RPM方式进行Postgresql安装搭建,省去很多钻牛角尖的时间。 参考资料 Linux部署postgresql并开启远程访问 - 掘金 (juejin.cn) # PostgreSQL在Linux下的两种安装方式 ...
test03=# create or replace function f_upsert(int,text,timestamp) returns void as $$ declare res int; begin update test set info=$2,crt_time=$3 where id=$1; if not found then insert into test (id,info,crt_time) values ($1,$2,$3); end if; exception when others then return; ...