column-sizing | 易学教程

How to alter column size of a view in Oracle

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问题 I am trying to alter the column size of a view with the same command that we use for table like : alter table STUDENT modify ( ROLL_NO VARCHAR2(80) ); But its throwing error SQL Error: ORA-00942: table or view does not exist So how we can alter the column size of a view? 回答1: A view is simply saved query and "inherits" column type from underlying base table. So if you need to change metadata you should alter view definition: ALTER VIEW view_students AS SELECT CAST(roll_no AS VARCHAR2(80)) AS

Set CONSTRAINED_RESIZE_POLICY for columns without first (for number of row) in tableView JavaFx

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问题 I have tableView with first column for row number. I would like to set CONSTRAINED_RESIZE_POLICY for all columns without first. I made: //First column implementation column.setPrefWidth(40); column.setResizable(false); ... //Make other columns tableView.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY); So I have first column with width I chose but other are wider than without last line in code above but still there is one additional void column. And I have another question because I

How can I set a <td> width to visually truncate its displayed contents?

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问题 I'm trying to set a column width of a table, which works fine until it gets to the point where child elements would be visually truncated ... then it won't size any smaller. ("visually truncated"-what doesn't fit appears to be hidden behind the next column) Here is some sample code to demonstrate my problem: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <script language="javascript" type="text/javascript