2.多表关联更新时,使用再加上inner join 或 left join等连接,示例如下 UPDATE t_user_bank b SET is_active='是' FROM t_user_arch u INNER JOIN t_deposit d ON u.arch_id=d.arch_id WHERE u.arch_id=b.arch_id and d.balance=0 and u.rec_no='
mysql> update [表名] set age = 25 where name =’aaa’; 修改数据 mysql> delete form [表名] where name = ‘bbb’; 删除数据 MySQL数据类型与操作 数值类型:tinyint、int、float、double 字符类型:char、varchar、text、enum 日期类型:datetime 特殊的值:NULL MySQL中的运算符 算数运算符:+ - * / ...
from pro_produced_component a left join pro_factory pf on a.factory_id = pf.id left join pro_component_type b on a.type = b.code and coalesce(pf.company_id, ''') = coalesce(b.company_id, ''') left join pro_project_area d on a.area_id = d.id left join pro_project_area p...
FROM pg_class a LEFT OUTERJOIN pg_description bON b.objsubid=0AND a.oid = b.objoid WHERE a.relnamespace = (SELECT oidFROM pg_namespaceWHERE nspname='public')--用户表一般存储在public模式下 AND a.relkind='r' ORDERBY a.relname 使用表名查询表字段的定义 SELECT a.attnum, a.attnameAS...
(c.oid)ASvacuum_count,pg_stat_get_autovacuum_count(c.oid)ASautovacuum_count,pg_stat_get_analyze_count(c.oid)ASanalyze_count,pg_stat_get_autoanalyze_count(c.oid)ASautoanalyze_countFROMpg_class cLEFTJOINpg_index iONc.oid=i.indrelidLEFTJOINpg_namespace nONn.oid=c.relnamespaceWHEREc.rel...
SELECT `DictTypeId`,`Value`,`Code`,`OrderNo`,`Remark`,`Status`,`CreateTime`,`UpdateTime`,`CreateUserId`,`UpdateUserId`,`IsDelete`,`Id` FROM `SysDictData` WHERE ( `DictTypeId` = 14544926246725 ) AND ( `IsDelete` = 0 )ORDER BY `OrderNo` ASC【MySQL数据库---异常 2023/10/11 星期...
Use the DELETE command to request resource deletion. SELECTstatus, content_type, content::json->>'url'ASurlFROMhttp_delete('http://httpbun.com/delete'); status | content_type | url ---+---+--- 200 | application/json | http://httpbun.com/delete As a shortcut to send data to a...
(r.rolname, c.oid, 'DELETE') AS can_delete FROM pg_class c JOIN pg_namespace n ON n.oid = c.relnamespace CROSS JOIN pg_roles r LEFT JOIN pg_authid_member m ON m.member = r.oid WHERE m.roleid = (SELECT oid FROM pg_roles WHERE rolname = current_user) OR r.rolname = ...
SELECT status, content_type, content::json->>'url' AS url FROM http_delete('http://httpbun.com/delete');status | content_type | url ---+---+--- 200 | application/json | http://httpbun.com/delete As a shortcut to send data to a GET request, pass a JSONB data...
Use the DELETE command to request resource deletion. SELECTstatus, content_type,content::json->>'url'ASurlFROMhttp_delete('http://httpbun.com/delete'); status | content_type | url ---+---+--- 200 | application/json | http://httpbun.com/delete As a shortcut to send data to a ...