--创建测试表createtablestudent (idinteger, namevarchar(64));createtableemployees (idinteger, ageinteger);--table_new 需要在外部创建createtabletable_new (idinteger, namevarchar(64), ageinteger);--插入测试数据insertintostudentselectgenerate_series(1,100),'lili_'||cast(random()*100asvarchar(2))...
public bool RunProcedure(string ReturnParameter,OracleType ParamType,ref DataSet Dataset,Hashtable HT ,string ProcedureName,string OracleConnection) { System.Data.OracleClient.OracleConnection dsconnection = new System.Data.OracleClient.OracleConnection(OracleConnection); System.Data.OracleClient.OracleCommand ...
c2 RETURN NEW END; $$ LANGUAGE 'plpgsql'; Where NEW is a variable that contains a row of the table.2- Define when the trigger will be fired:CREATE TRIGGER tr BEFORE INSERT ON tableName FOR EACH ROW EXECUTE PROCEDURE tr_function(); ...
create database aaaa --创建一个表,包含用户的帐号和钱数gouse aaaacreate table bb( ID int not null primary key, --帐号 moneys money --转账金额)insert into bb values ('1','2000') --插入两条数据insert into bb values ('2','3000')用这个表创建一个存储过程: ...
sql := 'create table _' || id || '_employee(id int, name text)';EXECUTE sql; sql := 'create table _' || id || '_sale_bill(id int, name text)';EXECUTE sql; ... return num; END; $BODY$ LANGUAGE plpgsql VOLATILE
Fixed sp_tables stored procedure to return correct result when @table_name parameter has square brackets around underscore (_). Fixed an issue where individual login active directory authentication used to throw error of pg_ad_mapping the plugin extension pointer not initialized. Fixed an issue wher...
Table of Contents Obtaining aResultSetfrom a stored function From a Function ReturningSETOFtype From a Function Returning a refcursor Calling stored procedure with transaction control PostgreSQL supports two types of stored objects, functions that can return a result value and - starting from v11 -...
Let’s show a practical example of the usage of stored procedures in SQL. 3.1. Practical Example For this demonstration, let’s create a stored procedure that updates the GPA of students in theStudenttable based on their performance in a specific exam: ...
在完成本篇的测试内容之后,我们可以将 $sql 的内容换成 DROP TABLE 语句,从而删除users 表。 插入数据 在PHP 应用中插入数据到 PostgreSQL 表中包含了以下几个步骤: 创建一个新的 PDO 实例,通过 connect() 方法连接到数据库; 构造一个 INSERT 语句,可以通过占位符(例如 :param1)传递参数; 调用PDO 对象的 ...
除了基本的 SQL 数据类型之外,PL/pgSQL 还支持基于表的字段或行或者其他变量定义变量: myrowtablename%ROWTYPE;myfieldtablename.columnname%TYPE;amountquantity%TYPE; myrow 是一个行类型的变量,可以存储查询语句返回的数据行(数据行的结构要和 tablename 相同);myfield 的数据类型取决于 tablename.columnname 字...