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Why use String.Format? [duplicate]
Why would anyone use String.Format in C# and VB .NET as opposed to the concatenation operators ( & in VB, and + in C#)?
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How to find gaps in sequential numbering in mysql?
...orked for me to find the gaps in a table with more than 80k rows:
SELECT
CONCAT(z.expected, IF(z.got-1>z.expected, CONCAT(' thru ',z.got-1), '')) AS missing
FROM (
SELECT
@rownum:=@rownum+1 AS expected,
IF(@rownum=YourCol, 0, @rownum:=YourCol) AS got
FROM
(SELECT @rownum:=0) AS a
JOIN...
MySQL: Sort GROUP_CONCAT values
In short: Is there any way to sort the values in a GROUP_CONCAT statement?
2 Answers
2...
How to split strings across multiple lines in CMake?
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CMake 3.0 and newer
Use the string(CONCAT) command:
set(MYPROJ_VERSION_MAJOR "1")
set(MYPROJ_VERSION_MINOR "0")
set(MYPROJ_VERSION_PATCH "0")
set(MYPROJ_VERSION_EXTRA "rc1")
string(CONCAT MYPROJ_VERSION "${MYPROJ_VERSION_MAJOR}"
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Capitalize first letter. MySQL
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It's almost the same, you just have to change to use the CONCAT() function instead of the + operator :
UPDATE tb_Company
SET CompanyIndustry = CONCAT(UCASE(LEFT(CompanyIndustry, 1)),
SUBSTRING(CompanyIndustry, 2));
This would turn hello to Hello, wO...
MySQL DISTINCT on a GROUP_CONCAT()
I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table . Sample data below:
6 Answers
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Comparing two dataframes and getting the differences
...to find changes, but symmetric difference. For that, one approach might be concatenate dataframes:
>>> df = pd.concat([df1, df2])
>>> df = df.reset_index(drop=True)
group by
>>> df_gpby = df.groupby(list(df.columns))
get index of unique records
>>> idx = [...
How do you concatenate Lists in C#?
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Concat returns a new sequence without modifying the original list. Try myList1.AddRange(myList2).
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MySQL JOIN the most recent row only?
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You may want to try the following:
SELECT CONCAT(title, ' ', forename, ' ', surname) AS name
FROM customer c
JOIN (
SELECT MAX(id) max_id, customer_id
FROM customer_data
GROUP BY customer_id
) c...
How can I find an element by CSS class with XPath?
...", @Tomalak's version provided in the comments is better:
//div[contains(concat(' ', @class, ' '), ' Test ')]
If you wished to be really certain that it will match correctly, you could also use the normalize-space function to clean up stray whitespace characters around the class name (as mention...