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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...tes you need to update characher-set and collation for utf8mb4:
database table/column:
alter table <some_table> convert to character set utf8mb4 collate utf8mb4_unicode_ci
database server connection (see)
On my development enviromnt for #2 I prefer to set parameters on command line when st...
How to update only one field using Entity Framework?
Here's the table
16 Answers
16
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In the shell, what does “ 2>&1 ” mean?
...ing both streams to the same destination.
Here is how the file descriptor table looks like after Bash has redirected both streams:
As you can see, both stdout and stderr now point to file. So anything written to stdout and stderr gets written to file.
There are several ways to redirect both str...
Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
...you cannot figure out why you get
Access denied, remove from the user
table all entries that have Host
values containing wildcards (entries
that contain '%' or '_' characters). A
very common error is to insert a new
entry with Host='%' and
User='some_user', thinking that this
allows...
Use of *args and **kwargs [duplicate]
...le named arguments that you have not defined in advance:
>>> def table_things(**kwargs):
... for name, value in kwargs.items():
... print( '{0} = {1}'.format(name, value))
...
>>> table_things(apple = 'fruit', cabbage = 'vegetable')
cabbage = vegetable
apple = fruit
...
How to get the max of two values in MySQL?
...ll. E.g. select greatest(date1, ifnull(date2, "0000-00-00 00.00:00")) from table1 where date2 is null; will get you date1.
– Christoph Grimmer-Dietrich
Nov 5 '14 at 14:24
1
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...is layout is a view group that displays child views in relative positions.
Table Layout: A layout that arranges its children into rows and columns.
More Information:
FrameLayout
FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be u...
Algorithm for creating a school timetable
...dering if there are known solutions for algorithm of creating a school timetable. Basically, it's about optimizing "hour-dispersion" (both in teachers and classes case) for given class-subject-teacher associations. We can assume that we have sets of classes, lesson subjects and teachers associated ...
SQL Server database backup restore on lower version
...aurav Don't script out the data - instead, script out the entire database (tables, procs, triggers, constraints, etc) without data, create the new database, then right click the source database, go to "Tools", then "Export Data" to transfer the contents of the tables to your database.
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How do I check if a column is empty or null in MySQL?
I have a column in a table which might contain null or empty values. How do I check if a column is empty or null in the rows present in a table?
...