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,Name Char (a) is not NULL,Sex enum (' f ', ' m '));Mysql> CREATE TABLE classify (->title varchar (+) Primary key,content Longtext,author Longtext,board LonGtext,datatype longtext);Get table structureDescribe MyClassDesc MyClass;Change table nameRename table name to new table nameDelete a tableDROP table Clear tableDelete from table nameInsert a record in a tableInsert two records into table MyClass, these two records indicate:Number 1, named Tom, has

explain. The Echarts object is mainly composed of some destruction objects (dispose), a registered map (REGISTERMAP), an initialization object (Echarts.init), an associated object (connect), a setting that belongs to the global property, Echartsinstance This is a get or set that contains some of the attributes in the Echarts diagram, gets the width (getwidth, getheight), gets the configuration (getOption), sets the configuration (setOption) Operation action and events these two operations in th

Accidentally saw the UDL, decided to look at its usage.UDL: Universal Data link. The connection information for OleDbConnection is provided in this file. This means that the UDL can only be used in OleDbConnection.Microsoft does not recommend using UDLBecause the UDL file is not encrypted, the connection string information is exposed in clear text. Because the UDL file is a file-based external resource for

The following describes the use of Session objects to pass and share data usage in asp:1, pass the value:First, define a text value or a single value to the session, as follows:session["Name"]=TEXTBOX1.TEXT; assigns the value of text 1 to the session variable name, which can be passed when the other page is investigated, and is still present, and this value is called or judged.If (session["name"]==null){}El

From: http://blog.unvs.cn/archives/session-transfer-method.htmlThe following describes the use of Session objects to pass and share data usage in asp:1 , passing values:First, define a text value or a single value to the session, as follows:session["Name"]=TEXTBOX1.TEXT; assigns the value of text 1 to the session variable name, which can be passed when the other page is investigated, and is still present, a