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    currently im working with mysql 5.7 in development, and 5.6 in production. Each time i run a query with a ... polifill for the ANY_VALUE function in mysql 5.6? Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am working on a project in which I am tracking number of clicks on a topic. I am using mongodb and I have ... 2wm1n1ix) ...please guide me how do I group it Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table. Sample data below: categories ---------- ... test3 test4 back. Any ideas? Many thanks! Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Say my data looks like this: date,name,id,dept,sale1,sale2,sale3,total_sale 1/1/17,John,50,Sales,50.0,60. ... so I can reference properly by name/id/dept. Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm using GROUP_CONCAT() in a MySQL query to convert multiple rows into a single string. However, the maximum ... a multiple row query into a single string? Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to go from this: name pet 1 Rashida dog 2 Rashida cat 3 Jim dog 4 JIm dog question ... .com/questions/65837805/aggregate-multiple-columns-of-qualitative-data-using-pandas...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have several data frames that look similar to the following data frame (with much more columns): id col1 ... /65885374/r-standard-deviation-across-columns-and-rows-by-id...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Consider the table: row_id: unique, not null user_id: id of the user thing_id: id of something, (user_id, thing_id) is ... -mysql-use-the-row-as-the-x-in-x-y-functional-dependency...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am from python programming and just a little knowledge of c#. I would like to group the following: List<List< ... .com/questions/65897852/c-sharp-grouping-list-of-list-by-index...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am new to group policies and currently I am exploring my options. In my case, I have created an ... contains-all-the-restrictions-or-create-multiple-gpos-for-each-rest...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have an example data as below. I want to calculate user count per city and user count per country. Here's ... sql-to-calculate-the-overall-total-and-sub-total-number-but-unique...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to create an API ,I have this controller which return data grouped by date: public function dated_matchs ... /questions/65943986/laravel-show-the-field-name-which-grouped-by...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a Datatable like this: Id Amount1 total 6 30 30 8 22 12 7 11 31 8 15 51 question from: ... .com/questions/65541048/count-on-groupby-update-column-value-c-sharp-datatable...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    As a novice to SQL I have been trying to write a query to organize the data correctly from a table in the format ... -rows-to-colums-in-sql-server-with-grouping-depending-on-a-date...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am relatively new to SQL. So I am doing an excersise in which they ask me to select the most expensive product ... /sql-max-returns-multiple-values-but-i-only-want-the-max-value...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    The following DF represents events received from users. Id of the user and the timestamp of the ... /stackoverflow.com/questions/65561016/pandas-expanding-average-session-time...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Closed. This question needs debugging details. It is not currently accepting answers. question from:https://stackoverflow.com/ ... -rows-in-r-if-there-are-two-1-within-them...
asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm having a difficult time understanding how to calculate a mean when the data is in long format (i.e: each ... counting-correct-mean-in-long-format-only-once-per-id-in-r...
asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a question that a little bit similar with question#66044663 but more complicated. Here's my dummy data. I ... sql-to-get-3-adjacent-actions-without-duplicate-from-the-flags...
asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a data set like this Input Data I want to roll up the data on Top Level GUID while I do that I would ... getting is TypeError: can only concatenate str (not "int") to str...
asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    As a novice to SQL I have been trying to write a query to organize the data correctly from a table in the ... depending if there are extra servicenames Is this possible? Thank you...
asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)
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965 views
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    data = data.groupby(columns_for_groupby).agg(first('AGE').alias('AGE'), first('WEIGHT').alias('WEIGHT'), first(' ... am pretty new to pyspark, any help would be appreciated. Thanks...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I get an (Error in check_dots_used(action = warn) : unused argument (action = warn)) when trying to use group_by(). ... that error message. Does anybody know how I can solve this?...
asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)
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