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psql invalid command \N while restore sql
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Can happen when e.g. create table... fails in the start, but loading continues.
– JaakL
Jan 11 '17 at 11:34
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Change column type from string to float in Pandas
I want to convert a table, represented as a list of lists, into a Pandas DataFrame . As an extremely simplified example:
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How do I ALTER a PostgreSQL table and make a column unique?
I have a table in PostgreSQL where the schema looks like this:
3 Answers
3
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Storing integer values as constants in Enum manner in java [duplicate]
...ation protocol which you can't change, or the enums represent columns in a table, etc).
In almost all cases I suggest using an EnumMap instead. It decouples the components more completely, if that was the concern, or if the enums represent column indices or something similar, you can easily make c...
How to add “on delete cascade” constraints?
...ible to add ON DELETE CASCADES to the both foreign keys in the following table without dropping the latter?
3 Answers
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Using an if statement to check if a div is empty
...YI:
This, in particular, is the solution I am using to hide annoying empty table cells in SharePoint (in addition with this condition "|| $(this).children("menu").length".
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onchange event on input type=range is not triggering in firefox while dragging
...ast either end of the slider
final mouse-up (or touch-end)
The following table shows how at least three different desktop browsers differ in their behaviour with respect to which of the above scenarios they respond to:
Solution:
The onRangeChange function provides a consistent and predictable ...
Backup/Restore a dockerized PostgreSQL database
... great! looking forward for "A non-graphical CLI interface that's scriptable." so that I can use it from Robot Framework tests :)
– Wlad
Aug 18 at 0:08
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Get operating system info
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[cssversion] => 2
[frames] => 1
[iframes] => 1
[tables] => 1
[cookies] => 1
[backgroundsounds] =>
[vbscript] =>
[javascript] => 1
[javaapplets] => 1
[activexcontrols] =>
[cdf] =>
[aol] =>
[beta] => 1
[wi...
Repeat each row of data.frame the number of times specified in a column
...ndRows(df, "freq")
Simple syntax, very fast, works on data.frame or data.table.
Result:
var1 var2
1 a d
2 b e
2.1 b e
3 c f
3.1 c f
3.2 c f
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