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How to check which locks are held on a table
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You can find current locks on your table by following query.
USE yourdatabase;
GO
SELECT * FROM sys.dm_tran_locks
WHERE resource_database_id = DB_ID()
AND resource_associated_entity_id = OBJECT_ID(N'dbo.yourtablename');
See sys.dm_tran_locks
If multip...
Azure table storage returns 400 Bad Request
...exception. How can I know what went wrong? I was trying to inset data in a table. Can't azure give me more details?
19 Answ...
Internet Explorer 9 not rendering table cells properly
...t.com/IE/feedback/details/649949/innerhtml-formatting-issues-on-very-large-tables
YOu can remove the space inbetween td by using javascript if your html is returned from ajax, then from the response, you replace it with
response_html = response_html.replace(/td>\s+<td/g,'td><td');
$('...
How to select records from last 24 hours using SQL?
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SELECT *
FROM table_name
WHERE table_name.the_date > DATE_SUB(CURDATE(), INTERVAL 1 DAY)
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How do you debug MySQL stored procedures?
...current process for debugging stored procedures is very simple. I create a table called "debug" where I insert variable values from the stored procedure as it runs. This allows me to see the value of any variable at a given point in the script, but is there a better way to debug MySQL stored procedu...
How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
... like to write a single SQL command to drop multiple columns from a single table in one ALTER TABLE statement.
11 Answers...
Using group by on multiple columns
...one group.
To illustrate using an example, let's say we have the following table, to do with who is attending what subject at a university:
Table: Subject_Selection
+---------+----------+----------+
| Subject | Semester | Attendee |
+---------+----------+----------+
| ITB001 | 1 | John ...
Change limit for “Mysql Row size too large”
... the following to the my.cnf file under [mysqld] section.
innodb_file_per_table=1
innodb_file_format = Barracuda
ALTER the table to use ROW_FORMAT=COMPRESSED.
ALTER TABLE nombre_tabla
ENGINE=InnoDB
ROW_FORMAT=COMPRESSED
KEY_BLOCK_SIZE=8;
There is a possibility that the above sti...
Iterator invalidation rules
...invalidated, but iterators to elements remaining in a2 will remain valid. (Table 91 — Unordered associative container requirements)
Container Adaptors
stack: inherited from underlying container
queue: inherited from underlying container
priority_queue: inherited from underlying container
Eras...
SQLite - How do you join tables from different databases?
...econd SQLite database, but I'm having a hard time figuring out how to join tables from the different databases.
3 Answers
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