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Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table?
...threads concerning this problem: Sometimes the process that has locked the table shows up as sleeping in the processlist! I was tearing my hair out until I killed all the threads that were open in the database in question, sleeping or not. That finally unlocked the table and let the update query run...
Static table view outside UITableViewController
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The only way to get a static UITableView along with other controls on the same screen is to use a Container View. Follow this way, it works perfectly:
Drag a ViewController onto your storyboard.
Drag a TableViewController onto your storyboard.
Next Drag ...
How to find third or nth maximum salary from salary table?
How to find third or nth maximum salary from salary table(EmpID,EmpName,EmpSalary) in Optimized way?
54 Answers
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Find rows that have the same value on a column in MySQL
In a [member] table, some rows have the same value for the email column.
8 Answers
8...
How to detect that animation has ended on UITableView beginUpdates/endUpdates?
I am inserting/deleting table cell using insertRowsAtIndexPaths/deleteRowsAtIndexPaths wrapped in beginUpdates/endUpdates . I am also using beginUpdates/endUpdates when adjusting rowHeight. All these operations are animated by default.
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Difference between one-to-many and many-to-one relationship
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From this page about Database Terminology
Most relations between tables are one-to-many.
Example:
One area can be the habitat of many readers.
One reader can have many subscriptions.
One newspaper can have many subscriptions.
A Many to One relation is the same as o...
How to find foreign key dependencies in SQL Server?
... all Foreign Key Relationships within the current database.
SELECT
FK_Table = FK.TABLE_NAME,
FK_Column = CU.COLUMN_NAME,
PK_Table = PK.TABLE_NAME,
PK_Column = PT.COLUMN_NAME,
Constraint_Name = C.CONSTRAINT_NAME
FROM
INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C
INNER JOIN INF...
How to reset sequence in postgres and fill id column with new data?
I have a table with over million rows. I need to reset sequence and reassign id column with new values (1, 2, 3, 4... etc...). Is any easy way to do that?
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how to mysqldump remote db from local machine
...And change:
mysqldump -P 3310 -h localhost -u mysql_user -p database_name table_name
To:
mysqldump -P 3310 -h 127.0.0.1 -u mysql_user -p database_name table_name
(do not use localhost, it's one of these 'special meaning' nonsense that probably connects by socket rather then by port)
edit: we...
Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...ifferences between PRIMARY, UNIQUE, INDEX and FULLTEXT when creating MySQL tables?
3 Answers
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