{"provider": "openai", "credential_name": "'OPENAI_CRED", "model":"command", "object_list": [ {"owner": "SELECT_AI_USER", "name": "Customers"}, {"owner": "SELECT_AI_USER", "name": "Branches"}, {"owner": "SELECT_AI_USER", "name": "Accounts"}, {"owner": "SELECT_AI...
）在执行选择查询之前，执行以下查询以获取CSV格式的选择查询输出。然后，输出将以CSV格式显示。设置标记cs...
(SqlCommand command = new SqlCommand(sqlQuery, connection)) { using (SqlDataReader reader = command.ExecuteReader()) { while (reader.Read()) { string value1 = reader.GetString(0); // 读取第一个列的值 int value2 = reader.GetInt32(1); // 读取第二个列的值 Console.WriteLine("Value ...
if(oracleCommand !=null) { oracleCommand.Parameters.AddRange(oracleParameters.ToArray()); } } } 多条查询的实现代码: usingDapper; usingOracle.ManagedDataAccess.Client; usingSystem.Data; intselectedId =1; varsql ="BEGIN OPEN :rslt1 FOR SELECT * FROM customers WHERE customerid = :id; "+ ...
此观点搁在过去可能会有几分道理。但是现在,各种数据库解析器已经发展得相当智能了,它们判断EXISTS语句的效率,与产生SELECT结果列表(请参见https://javarevisited.blogspot.com/2016/04/how-to-convert-result-of-select-command-to-comma-separated-String-in-SQL-Server.html)将毫无关系。
select s.schemaname schema_name, decode(sign(48 - command), 1, to_char(command), 'Action Code #' || to_char(command) ) action, status session_status, s.osuser os_user_name, s.sid, p.spid , s.serial# serial_num, nvl(s.username, '[Oracle process]') user_name, s.terminal term...
...当使用 Oracle 版本 12c 之前的版本时,也会自动选择此模式。...在使用传统模式或者将带有 limit/offset 的 Select 语句嵌入到复合语句中时,会使用基于窗口函数的 LIMIT / OFFSET 的模拟方法,这涉及使用 ROW_NUMBER 创建子查询...这些可调用对象特定于正在使用的特定Numeric的类型,以及如果没有 SQLAlchemy...
SQL> select instr('oracle traning','ra',1,2) instring from dual; INSTRING --- 9 6.LENGTH返回字符串的长度; SQL> select name,length(name),addr,length(addr),sal,length(to_char(sal)) from .nchar_tst; NAME LENGTH(NAME) ADDR LENGTH(ADDR) SAL LENGTH(TO_CHAR(SAL)) --- --...
SELECT * FROM (SELECT PARSING_USER_ID EXECUTIONS,SORTS,COMMAND_TYPE,DISK_READS, SQL_TEXT FROM V$SQLAREA ORDER BY DISK_READS DESC) WHERE ROWNUM < 10; (4)Disk Read最高的SQL语句的获取 SELECT SQL_TEXT FROM (SELECT * FROM V$SQLAREA ORDER BY DISK_READS) WHERE ROWNUM <= 5; ...
HOME Oracle PL/SQL PL SQL Cursor FOR UPDATE Cursor Introduction To lock all the records while you're working on them, use a SELECT FOR UPDATE command. DemoSQL> SQL> drop table emp; Table dropped.--fromwww.java2s.com Elapsed: 00:00:00.02 SQL> ...