VC中有通用的检验SQL语句是否正确的方法吗？

2002-07-22 04:16:45 176 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

ADO方式，VC调用Execute执行INSERT INTO插入变量SQL语句的写法有些情况下，SQL SERVER 2008r2中需要保存float，int类型的数据，当C++中的变量为double类型时，先格式化为Cstring格式，再组合成SQL语句。对应的C++ 插入语句写法如下： m_pConnection->Execute(_bstr_t("INSERT INTO Gps(GPSTIME,S1XZWZ,S1X,S1Y,S1HZJD,S1DW,S1FX)\ 阅读详情

最好不要通过Execute来检验，速度要快.

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VC用ADO的方法连接SQL server 2000 费了不小的功夫才搞通vc连接数据库的一些内容，写出来和大家分享一下！首先SQL server2000 应该设置成混合身份验证模式，再应该添加ado的一个动态链接库，在stdAfx.h文件中添加#import "C:/Program Files/Common Files/System/ADO/msado15.dll" no_namespace /rename("EOF","adoEOF") 阅读详情

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切换为时间正序

jy98huxhu 2002-09-19

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CharmDream 2002-09-19

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workercxm 2002-09-19

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我也想知道！

zhangyilan 2002-09-19

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sdb72 2002-09-19

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好像只有通过执行的方式

aben456 2002-09-19

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好象只能通过执行SQL的方法，EXECUTE没有返回的；建议使用OPEN，如上。

objectman 2002-09-19

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不同的数据库SQL有区别，怎么检验？？

qing_li73 2002-09-19

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Quick SQL Pass-Through Queries
The fastest way to work with ODBC data sources is via attached tables. See the article DAO External: Working with External Data Sources. For doing bulk operations, the best, and often fastest, approach is to use an SQL pass-through query. It’s possible to do a quick pass-through query using a recordset and without having to create a querydef, even a temporary one. This is also helpful if you’re converting existing code that uses the DB_SQLPASSTHROUGH option in many places.

DAO’s Connect property for databases normally doesn’t have a value for Microsoft Jet (.MDB) databases. But you can assign an ODBC connect string to the property and use the dbSQLPassthrough option in a recordset. This means you don’t have to open the ODBC data source directly to use SQL pass-through.

For example:

// pdb is a pointer to a CDaoDatabase object
// (an .MDB database)
// Set up the connect string
CString strConnect = "ODBC;DSN=ntstuff;UID=sa;PWD=Fred;APP=App Name;WSID=MyComputer;DATABASE=pubs;TABLE=dbo.authors;";
pdb->SetConnect( strConnect );
// Use SQL pass-through in a recordset
// Set up the SQL and open the recordset
CString strSQL = "whatever";
CDaoRecordset rs( pdb );
try
{
rs.Open( dbOpenSnapshot, strSQL, dbSQLPassThrough );
// ...
}
// ...

dyw 2002-09-19

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最好通过Execute来检验

VC中有通用的检验SQL语句是否正确的方法吗？

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