how to read sql database

column names in sequence, this task is completed by querying the data dictionary, which means it will take more time (4) Reduce the number of visits to the get = '_ blank'> Database: ORACLE has performed a lot of work internally: parsing SQL statements, estimating index utilization, binding variables, read data blocks; (5) re-set the ARRAYSIZE parameter in

I read the list from the database and then through the PHP display to the page, read out every message has a delete button, why the button is not with the corresponding information on the same line, but the next line to go, the effect as shown? Please ask your predecessors. PS: each piece of information is stored in an array, because the array is the reason for s

.) Message);}}Dgvshow.datasource = DT;}Else{MessageBox.Show ("This is an empty watch!") ");}}Get the first worksheet name of Excelpublic static string Getexcelfirsttablename (String excelfilename){string tableName = null;if (file.exists (excelfilename)){String excelstr = "provider= microsoft.ace.oledb.12.0;data source=" + Excelfilename + "; Extended properties= ' Excel 12.0; Hdr=yes;imex=1 ' ";using (OleDbConnection conn = new OleDbConnection (EXCELSTR)){Conn. Open ();DataTable DT = conn. GetOle

Recently encountered Python read database data, read out the Chinese garbled problem,The basic of Web search is:"1. python file Set encoding utf-8 (file preceded by #encoding =utf-8)2. mysql Database charset=utf-83. Python connection mysql is plus parameter Charset=utf84. Set Python's default encoding to Utf-8 (sys.set

image is generally converted to a binary stream format and then saved to the database. At the same time, the format for storing images in database tables is generally image. This project uses images as a parameter and saves them to the database together with several other parameters. it is not the same as the images found on the Internet and is slightly modified

() {@Override public void run () {Dityread.setval UE ("Zs", "ZSP"); }}, "T1"); /* Thread t2 = new Thread(New Runnable () {* * @Override public void Run () {* *}}, "T2"); */T1.start (); Thread.Sleep (1000); Dityread.getvlaue (); }}Summarize:? Consider the problem when you must consider the integrity of the problem, when the SetValue execution, do not want to getvalue execution, so GetValue also to lock, so as to ensure synchronization, otherwise may cause stole

Data | database | database connection Careful developers sometimes think that when we include code like So, is there any way we can get the database connection to open only when we need to read the database, without any action when we re