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27 cze 2016 · SELECT video_id, SUM (new_end - new_start) total_time FROM (SELECT DISTINCT a.video_id, b.new_start, b.new_end FROM videos a, LATERAL (SELECT MIN (event_start) new_start, MAX (event_end) new_end FROM videos b WHERE ( (a.event_start BETWEEN b.event_start AND b.event_end) OR (a.event_end BETWEEN b.event_start AND b.event_end)) AND a.video_id = b ...
17 sty 2015 · Write a SQL query to find all numbers that appear at least three times consecutively From the output in your question, 2 does not occur three times consecutively. I have an iterative solution using user-defined variables. MY PROPOSED QUERY
19 lip 2018 · How I can select all row where account_id occurs more than once? For the example above it will return rows 1, 2, 4, 5. I tried this one query, but it does not return what I expect: select * from table_name t1 where (select count(*) from table_name t2 where t1.account_id = t2.account_id) > 1 order by t1.account_id;
28 lut 2023 · One of the best ways to learn advanced SQL is by studying example queries. In this article, we'll show 25 examples of advanced SQL queries from medium to high complexity. You can use them to refresh your knowledge of advanced SQL or to review before a SQL interview.
18 gru 2023 · You can refer to each WITH statement multiple times in another WITH statement or in a main query. In our example, we referenced the first defined WITH (the country_export_by_product CTE) in two places: In the second WITH (the country_export_total CTE) and in the main query.
28 lip 2022 · An SQL query is a statement built by putting together various SQL commands. These SQL commands together perform a specific task to access, manage, modify, update, control, and organize your data stored in a database and managed via a DBMS.
15 mar 2022 · You’ll begin by performing arithmetic and using various functions with dates and times using only the SELECT statement. Then you’ll practice by running queries on sample data, and you’ll learn how to implement the CAST function to make the output more digestible to read.
