两个指数文件如下: class First(Document): class Index: name = 'first' case_id = Keyword() name = Text() class Second(Document): class Index: name = 'second' case_id = Keyword() status = Text() 我只想以SQL格式执行如下查询 select * from first as f, 浏览2提问于2020-08-21得票数...
if EXISTS (select 1 from City where name = 'Perth') THEN Print 'Record exits - Update' ELSE Print 'Record doesn''t exist - Insert' 我发现错误: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL 浏览5提问于2012-11-16得票数 1 ...
以Northwind数据库为例,对Product表进行查询(我增加了里面的数据,增加到3000条),只选取ProductID和ProductName,进行3000次查询,每次查询一条记录。首先看看使用SqlDataReader的代码: Stopwatchwatch =newStopwatch(); watch.Start();using(SqlConnectionconn =newSqlConnection("Data Source=.;Initial Catalog=Northwind;...
以Northwind数据库为例,对Product表进行查询(我增加了里面的数据,增加到3000条),只选取ProductID和ProductName,进行3000次查询,每次查询一条记录。首先看看使用SqlDataReader的代码: Stopwatchwatch =newStopwatch(); watch.Start();using(SqlConnectionconn =newSqlConnection("Data Source=.;Initial Catalog=Northwind;...
anetworking 正在翻译,请等待...[translate] aWhen you select a product in our catalog, we fill your listing for you with product details that help more buyers find it. 当您在我们的编目时选择一个产品,我们用帮助更多买家发现它的产品细节填装您的目录为您。[translate]...
WITH FUNCTION get_domain(url VARCHAR2) RETURN VARCHAR2 IS pos BINARY_INTEGER; len BINARY_INTEGER; BEGIN pos := INSTR(url, 'www.'); len := INSTR(SUBSTR(url, pos + 4), '.') - 1; RETURN SUBSTR(url, pos + 4, len); END; SELECT DISTINCT get_domain(catalog_url) FROM product_infor...
integrated security=SSPI;initial catalog=Northwind"selectcommand="SELECT * FROM [Products] Where ProductID <= 5"runat="server"></asp:sqldatasource><asp:buttonid="SubmitButton"text="Submit"onclick="SubmitButton_Click"runat="Server"></asp:button><br/><br/><asp:labelid="Label...
Product descriptions from the supplier Overview2 - 29 pieces $1,180.00 30 - 49 pieces $1,061.00 >= 50 pieces $999.00 Variations Total options: 1 Color;3 Size. Select now Color(1): Other Other Size(3) 3600*1100*7503200*1100*7502800*1100*750 ShippingShipping solutions for the selected ...
from the list</p> <select id="Select1" name="Select1" datasourceid="SqlDataSource1" datatextfield="ProductName" runat="server"> </select> <asp:sqldatasource id="SqlDataSource1" connectionstring="workstation id=localhost;integrated security=SSPI;initial catalog=Northwind" selectcommand=...
$select->from(['main_table'=>$this->getTable('catalog_product_entity')])->useStraightJoin(true)->joinInner(['product_name'=> $productAttrName->getBackend()->getTable()],'product_name.entity_id = main_table.entity_id'.' AND product_name.attribute_id = '. $productAttrNameId .' AND...