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1052: Column 'id' in field list is ambiguous
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It's not a 'fully qualified name', it is a range variable. When you omit an explicit range variable, SQL generates one that is the same as the table name. To better see what I mean, change your FROM clause ...FROM tbl_names tbl_names, tbl_section tbl_section WHERE... ...
Count number of occurrences of a given substring in a string
...f expensive, expression is: sum("GCAAAAAGH"[i:].startswith("AAA") for i in range(len("GCAAAAAGH")))
– jsbueno
Jun 26 '15 at 14:08
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How can I delete multiple lines in vi?
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You can delete multiple(range) lines if you know the line numbers:
:[start_line_no],[end_line_no]d
Note: d stands for delete
where,
start_line_no is the beginning line no you want to delete and
end_line_no is the ending line no you want to del...
How to get first element in a list of tuples?
...iterations = 100000
init_time = timeit.timeit('''a = [(i, u'abc') for i in range(1000)]''', number=iterations)/iterations
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = [i[0] for i in a]''', number=iterations)/iterations - init_time)
print(timeit.timeit('''a = [(i, u'abc') for i ...
How do I put double quotes in a string in vba?
...way is to double up on the quotes to handle a quote.
Worksheets("Sheet1").Range("A1").Formula = "IF(Sheet1!A1=0,"""",Sheet1!A1)"
Some people like to use CHR(34)*:
Worksheets("Sheet1").Range("A1").Formula = "IF(Sheet1!A1=0," & CHR(34) & CHR(34) & ",Sheet1!A1)"
*Note: CHAR() is use...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...re, nonlinear functions must be continuous and differentiable between this range.
A neural network must be able to take any input from -infinity to +infinite, but it should be able to map it to an output that ranges between {0,1} or between {-1,1} in some cases - thus the need for activation functio...
Changing the color of the axis, ticks and labels for a plot in matplotlib
...otlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_xlabel('X-axis')
ax.set_ylabel('Y-axis')
ax.spines['bottom'].set_color('red')
ax.spines['top'].set_color('red')
ax.xaxis.label.set_color('red')
ax.tick_params(axis='x', colors='red')
plt.show()
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How many parameters are too many? [closed]
... <algorithm> takes more than 3 parameters, because just one iterator range is 2 already. It's just the nature of programming with iterators (i.e. generic programming with STL collections).
– Steve Jessop
Nov 27 '08 at 13:49
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What's the maximum value for an int in PHP?
...ntegers, particularly older Windows builds of PHP
Values outside of these ranges are represented by floating point values, as are non-integer values within these ranges. The interpreter will automatically determine when this switch to floating point needs to happen based on whether the result valu...
Pandas dataframe get first row of each group
...like the first three, for example, use a sequence like nth((0,1,2)) or nth(range(3)).
– Ronan Paixão
Sep 8 '16 at 2:34
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