procedure_demo$#DECLAREprocedure_demo$#BEGINprocedure_demo$#CREATETABLEtest1 (idint);procedure_demo$#INSERTINTOtest1VALUES(1);procedure_demo$#COMMIT;procedure_demo$#CREATETABLEtest2 (idint);procedure_demo$#INSERTINTOtest2VALUES(1);procedure_demo$#ROLLBACK;procedure_demo$#END$$;CREATEPROCEDUREprocedure...
而不是NEW变量本身. postgres=# \d t_ret Table “public.t_ret” Column | Type | Modifiers ———-+———–+———– id | integer | info | text | crt_time | timestamp without time zone | Triggers: tg01 BEFORE INSERT ON t_ret FOR EACH ROW EXECUTE PROCEDURE tg_t_ret() tg02...
在上面的代码中,我们定义了一个名为example的存储过程,它有一个输入参数a、一个输出参数b和一个输入/输出参数c。存储过程的实现代码是将a乘以2,并将结果赋值给b,将c加1。 4. 存储过程变量 存储过程可以使用变量来存储和操作数据。在PostgreSQL中,可以使用DECLARE语句来声明变量。例如: CREATE PROCEDURE example (...
Calling a stored procedure example Let’s take an example of calling a PostgreSQL stored procedure in Python. 1) Create a new stored procedure First, open the Command Prompt on Windows or Terminal on Unix-like systems. Second, connect to the suppliers database on the local PostgreSQL server:...
This is another example of stored procedure that will allow to insert a point with the public user role. This is most helpful in order to setup a point collector app.CREATE OR REPLACE FUNCTION insertpoint( lon numeric, lat numeric, tablename text ) RETURNS TABLE(cartodb_id INT) LANGUAGE ...
CREATE OR REPLACE PROCEDURE add_user(pv_name varchar, pd_created_at timestamp) AS $$ BEGIN insert into users(name, created_at) values (pv_name, pd_created_at); END; $$ LANGUAGE plpgsql; CallableStatement 对象默认只支持存储函数调用;为了支持存储过程,需要将连接属性 escapeSyntaxCallMode 设置为...
Example 1. A PL/pgSQL Trigger Procedure This example trigger ensures that any time a row is inserted or updated in the table, the current user name and time are stamped into the row. And it checks that an employee’s name is given and that the salary is a positive value. ...
postgresql create procedure 返回数据集 post返回数据类型 Http Header里的Content-Type一般有这三种: application/x-www-form-urlencoded:数据被编码为名称/值对。这是标准的编码格式。 multipart/form-data: 数据被编码为一条消息,页上的每个控件对应消息中的一个部分。
RECOVERYTABLESPACE EXAMPLE; ALTERTABLESPACE EXAMPLE ONLINE; 如果数据库处于打开的状态忽略前面三步。 数据文件级完全恢复: 数据库处于关闭状态 SHUTDOWNABORT; 在操作系统上将备份的数据文件覆盖 STARTUPMOUNT; RECOVERYDATAFILE ‘D:\APP\LENOVO\ORADATA\ORCL\EXAMPLE01.DBF’; ...
The procedure to set things up is basically the same as that for setting up a single slave. You can easily take base backups from an operational slave (postgresql.conf and pg_hba.conf have to be configured just as in the case of a single master). 注意时间线切换; 如果发生故障转移,这些...