希望这会有所帮助。
如果要在运行时参数中创建,可以使用如下内容:
ADOQuery1.Close;
ADOQuery1.SQL.Text := vSqlString;
ADOQuery1.Parameters.Clear;
ADOQuery1.Parameters.CreateParameter('paramID', ftInteger, pdInput, 10, vIntegerValue);
ADOQuery1.Open;
或者,您可以将值连接到查询。例如:
//For Integer values:
vSqlString: = 'Select * From myTable Where myID =' + IntToStr (vIntegerValue);
//For String values:
vSqlString: = 'Select * From myTable Where myID =' + QuotedStr (vStringValue);
//For float values:
//Be careful with this, usually in a query, the comma is separator values,
//so make sure that the decimal separator is '.'
vDS := DecimalSeparator; //I keep the value it had
DecimalSeparator := '.';
try
ADOQuery1.close;
ADOQuery1.SQL.Text := 'Select * From myTable Where myID='+FloatToStr(vFloatValue);
ADOQuery1.Open;
finally
DecimalSeparator := vDS; //Restore the value that had
end;
第三个选项是在设计时设置参数。但我认为这不是你想要的。