1) Just add the column and no data will be lost? 2) Export the table and data, change the code to initialize the new columns correctly, and then import the table? My dump from MySQL Workbench contains the values clause but no mention of columns so it must be positional, so do I nee...
table and test.How to repeat:Steps to reproduce: set global lock_wait_timeout=5; UPDATE performance_schema.setup_instruments SET ENABLED = 'YES', TIMED = 'YES' WHERE NAME = 'wait/lock/metadata/sql/mdl'; exit start new connections: connection#1 show variables like 'lock%wait%time%'; +...
Edit 'table_name': Changes the docked table editor to the selected table. Edit 'table_name' in New Tab: Opens the table in a new table editor tab. Copy SQL to Clipboard: Copies aCREATE TABLEstatement for the table. Copy Column Names to Clipboard: Copies a comma-separated list of colum...
Adding new row in DataGrid when the cells on the last row being clicked. Adding Rows (containing textboxes) to Datagrid on click of Add New button Adding Textbox value to ListView Column in C# WPF. adding the checkbox column in to WPF datagrid and select the checked rows ?? Adding us...
Bug #76895 Adding new column OR Drop column causes duplicate PK error Submitted: 30 Apr 2015 6:06Modified: 30 Apr 2015 14:02 Reporter: Nilnandan Joshi Email Updates: Status: Not a Bug Impact on me: None Category: MySQL Server: InnoDB storage engineSeverity: S2 (Serious) Version: 5.6...
mysql - adding alias columns as new column I have the following mysql query.. select x.timest, max(case when xdevloc='outside' then x.value end) as outside, max(case when x.devloc='hvac_main_return' then x.value end) as hvac_main_return, max(case when x.devloc='hvac_...
("com.mysql.jdbc.Driver"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", "root", "root"); Statement st = con.createStatement(); int n = st.executeUpdate("ALTER TABLE mytable ADD col int"); System.out.println("Query OK, " + n + " rows ...
But could you please put some more light on when you say "in some cases the entire table is rebuilt with brand new indexes". And one more thing if the column I am adding populates the existing rows with a NULL value, Will that help me in any way....
The reason for this is that the anonymous-user account has a more specific Host column value than the 'finley'@'%' account and thus comes earlier in the user table sort order. (For information about user table sorting, see Section 4.5, “Access Control, Stage 1: Connection Verification”....
I'm using phpMyAdmin to administer a MySQL database on a hosted account. My question is: are there any "gotchas" that I should watch out for when I want to add a new column to an existing table that is live and potentially in use? (99.9% of the access to it is reading only) ...