3.Dyamic cursors in PL/SQL create or replace package dynamic_cursor is type t_crs isref cursor; procedure dyn_sel ( tab_name in varchar2, field_name in varchar2, val in varchar2, crs in out t_crs); procedure openCursor; end dynamic_cursor; / create or replace package body dynamic_...
COM_INIT_DB在 第4个字节上使用0x02,COM_QUERY使用0x03. SQLCOM_CHANGE_DB命令属于COM_QUERY的一个子命令,客户端发送过来的只是一个QUERY,并不知道这个 QUERY是要CHANGE DB还是要做SELECT或者其他操作,这就需要服务器端进行语法解析,即所谓的YACC语法解析。 经过解析后才能知道这条命令到底是什么,这就是低层次的...
用信号通知 Microsoft® SQL Server™ 实用工具一批 Transact-SQL 语句的结束。 GO 不是 Transact-SQL 语句;而是可为 osql 和 isql 实用工具及 SQL Server 查询分析器识别的命令。 如果你的SQL过长的时候,就要写GO,或者有一些语句,它只能是第一句操作的,在之前你也得写 GO ,GO的意思 是 分批处理语句 有...
1. 正常情况下,sql执行过程中临时表大小达到ibtmp上限后会报错; 2. 当JDBC设置useCursorFetch=true,sql执行过程中临时表大小达到ibtmp上限后不会报错。 解决方案 进一步了解到使用useCursorFetch=true是为了防止查询结果集过大撑爆 jvm,但是使用useCursorFetch=true又...
Written By Posted HOW TO use SQL IN Clause in cursor.execute() yg li October 23, 2010 12:52AM Sorry, you can't reply to this topic. It has been closed. Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and ...
Optionally, call SQLGetCursorName to get the cursor name if positioned updates will be done by using the WHERE CURRENT OF clause and a cursor name was not supplied with SQLSetCursorName in Step 3. Call SQLNumResultCols to get the number of columns (C) in the rowset. Use column...
If set to "true" and 'defaultFetchSize' is set to a value higher than zero or 'setFetchSize()' with a value higher than zero is called on a statement, then the cursor-based result set will be used. Please note that 'useServerPrepStmts' is automatically set to "true" in this case...
zero or 'setFetchSize()' with a value higher than zero is called on a statement, then the cursor-based result set will be used. Please note that 'useServerPrepStmts' is automatically set to "true" in this case because cursor functionality is available only for server-side prepared ...
Use a server-side cursor for the recordset. Remove the default value that is specified for the field in the database. Always specify a value for the field when you add a new record. Steps to Reproduce Behavior Add a table to SQL Server that contains a datetime field that does not ...
java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; public class TestReported { public static void main(String[] args) throws ClassNotFoundException, Exception { String url = "jdbc:mysql://127.0.0.1:3306/mysqlbugreport?useCursorFetch=...