Another point is add a transaction on your project and assign it to sqlconnection...
At least, i never connected without a transaction .... Em 26/12/2012 12:37, "Michael Van Canneyt" <mich...@freepascal.org> escreveu: > > > > On Wed, 26 Dec 2012, Giuliano Colla wrote: > >> I'm trying to familiarize with MySql components, using mysql 5.1. >> I downloaded the TryMySql example linked from the Wiki page, I've changed TMySQL50Connection to TMySQL51Connection, and set in SQLQuery ParseSQL=False and ReadOnly=true, as suggested, but when I try to run it, the "connect to server" fails with the error "Database not assigned!". >> The code I'm using is: >> >> MySQLConnection1.HostName := HostEdit.Text; >> MySQLConnection1.UserName := UserEdit.Text; >> MySQLConnection1.Password := PasswdEdit.Text; >> MySQLConnection1.DatabaseName := 'mysql'; // MySQL is allways there! >> ShowString('Opening a connection to server: ' + HostEdit.Text); >> MySQLConnection1.Open; >> >> // First lets get a list of available databases. >> if MySQLConnection1.Connected then begin >> ShowString('Connected to server: ' + HostEdit.Text); >> ShowString('Retreiving list of available databases.'); >> SQLQuery1.SQL.Text := 'show databases'; >> SQLQuery1.Open; <==== Fails here > > > Did you set > SQLQuery1.Database:=MySQLConnection1; > > ? > > Also 'Show databases' will - to my knowlegde - not work. It is not valid SQL. > as far as I know, it's a metadata statement that is handled by the mysql client which translates it to an API call. > > Michael. > > > -- > _______________________________________________ > Lazarus mailing list > Lazarus@lists.lazarus.freepascal.org > http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
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