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How to remove an item from an array in AngularJS scope?
...I found out the reason... I use a chunk method to create two columns in my table by watching my $scope.items. Sorry!
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How to alter a column and change the default value?
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ALTER TABLE foobar_data MODIFY COLUMN col VARCHAR(255) NOT NULL DEFAULT '{}';
A second possibility which does the same (thanks to juergen_d):
ALTER TABLE foobar_data CHANGE COLUMN col col VARCHAR(255) NOT NULL DEFAULT '{}';
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What is the difference between LR, SLR, and LALR parsers?
...s of LR parsers, but what is the actual difference as far as their parsing tables are concerned?
8 Answers
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MySQL: multiple tables or one table with many columns?
... user has one name and password), then it's probably better to have it one table, since it reduces the number of joins the database will need to do to retrieve results. I think some databases have a limit on the number of columns per table, but I wouldn't worry about it in normal cases, and you can ...
How to list all the available keyspaces in Cassandra?
...nt to do this outside of the cqlsh tool you can query the schema_keyspaces table in the system keyspace. There's also a table called schema_columnfamilies which contains information about all tables.
The DESCRIBE and SHOW commands only work in cqlsh and cassandra-cli.
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What is a 'multi-part identifier' and why can't it be bound?
I continually get these errors when I try to update tables based on another table. I end up rewriting the query, change the order of joins, change some groupings and then it eventually works, but I just don't quite get it.
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How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
... entries for drivers and line disciplines in
this directory, as shown in Table 1-11.
Table 1-11: Files in /proc/tty
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File Content
drivers list of drivers and the...
What's the difference between a temp table and table variable in SQL Server?
In SQL Server 2005, we can create temp tables one of two ways:
12 Answers
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MySQL InnoDB not releasing disk space after deleting data rows from table
I have one MySQL table using the InnoDB storage engine; it contains about 2M data rows. When I deleted data rows from the table, it did not release allocated disk space. Nor did the size of the ibdata1 file reduce after running the optimize table command.
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Query to list number of records in each table in a database
How to list row count of each table in the database. Some equivalent of
21 Answers
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