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Solving 3 tricky SQL Interview Queries - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/7d0ca799-4698-41b6-9aa8-c2257bba8091/Q1-EO_Comments_Translation.png Blog - Solving 3 tricky SQL Interview Queries - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/3c64910c-f629-4da8-bfe2-705b60b6ef90/Q2-Input_n_EO_Derive_Output.png Blog - Solving 3 tricky SQL Interview Queries - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/2308540e-027b-4e99-88d2-b49d4fd8353d/Q3-Input_IPL_Matches.png Blog - Solving 3 tricky SQL Interview Queries - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/10be09a2-1cfa-4a65-a1da-138df37491b1/Q3-EO_IPL_Matches.png Blog - Solving 3 tricky SQL Interview Queries - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://techtfq.com/blog/step-by-step-guide-on-how-to-learn-sql monthly 0.5 2022-03-02 https://techtfq.com/blog/how-to-get-your-1st-data-analyst-job monthly 0.5 2021-12-30 https://techtfq.com/blog/real-sql-interview-question-asked-by-a-faang-company monthly 0.5 2021-12-08 https://techtfq.com/blog/top-20-sql-interview-questions monthly 0.5 2022-03-19 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/6069c81a-f8d2-41a9-b6bb-759772c1cf4f/SQL+COMMANDS+FINAL%284%29.png Blog - Top 25 SQL Interview Questions and Answers - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/66e331f2-7b2f-4383-8261-5a926b594123/CASE+Statement.png Blog - Top 25 SQL Interview Questions and Answers - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/325f19f9-1587-4d9d-8deb-40f7c5762267/CONTINENT+Table.png Blog - Top 25 SQL Interview Questions and Answers - Table Name: CONTINENTS Has data of 6 continents. Please note the continent “Antarctica” is intentionally missed from this table. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/a441ecb3-4409-4e19-8c99-0e6fd1a8fc9b/COUNTRIES+Table.png Blog - Top 25 SQL Interview Questions and Answers - Table Name: COUNTRIES Has data of one country from each continent. Please note that I have intentionally missed to add a country from Europe in this table. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/ff4646c7-192f-481c-bd30-cb4a7a9621c0/INNER+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - INNER JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct INNER JOIN countries cr ON ct.continent_code = cr.continent_code; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/ee531133-b2ea-4f56-8ea4-2f51b1248eba/LEFT+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - LEFT JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct LEFT JOIN countries cr ON ct.continent_code = cr.continent_code; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/3954038c-ecaa-4741-b1ad-ccdce47452e9/RIGHT+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - RIGHT JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct RIGHT JOIN countries cr ON ct.continent_code = cr.continent_code; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/dd333295-1c5f-418d-9d47-b5dc149ad4d8/FULL+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - FULL OUTER JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct FULL OUTER JOIN countries cr on ct.continent_code = cr.continent_code; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/2e653f9a-b3ac-4ab0-8b59-1af2dbd3cda1/SELF+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - SELF JOIN Query SELECT cr1.country_name FROM countries cr1 JOIN countries cr2 ON cr1.country_code = cr2.continent_code; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/4bddc1be-b93b-4032-8c5d-e8809587c48a/NATURAL+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - NATURAL JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct NATURAL JOIN countries cr; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/f934b32c-237b-433f-a27c-9e3384c46c42/CROSS+JOIN.png Blog - Top 25 SQL Interview Questions and Answers - CROSS JOIN Query SELECT cr.country_name, ct.continent_name FROM continents ct CROSS JOIN countries cr; https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/baf5f874-aa7a-4b20-a3c7-65cf47362bae/managers_table.png Blog - Top 25 SQL Interview Questions and Answers - Table Name: MANAGERS Contains salary details of 5 different managers. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/cd12d88b-c055-483c-ac57-0ce5bd74d384/rank%2C+dense%2C+rn.png Blog - Top 25 SQL Interview Questions and Answers Result from above query. Check the difference in column values for ranks, dense_ranks and row_numbers. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/a65b8278-a5eb-47a6-b2d7-dbded689b2d5/SUM+aggregate+funciton.png Blog - Top 25 SQL Interview Questions and Answers - Make it stand out Using SUM as aggregate function returns just 1 record. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/7b1fdc8d-9dc3-4ff5-a264-9752d1ff6ea2/SUM+window+function.png Blog - Top 25 SQL Interview Questions and Answers - Make it stand out Using SUM as window function (with the OVER clause), does not reduce the no of records. Please note it’s not mandatory to use ORDER BY or PARTITION BY inside the OVER clause as shown here. https://techtfq.com/blog/practice-sql-interview-questions-on-leetcode monthly 0.5 2021-11-18 https://techtfq.com/blog/practice-writing-sql-queries-using-real-dataset monthly 0.5 2021-10-29 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/fb54a670-7d31-4ee8-b452-7edcae34ebb7/Olympics_History_Table_Data.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Data from athlete_events file. We load this data into a table named “OLYMPICS_HISTORY”. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/79858e56-83d7-452d-8c16-697590b2f0db/Olympics_History_NOC_Regions_Table_Data-V2.png Blog - Practice Writing SQL Queries using Real Dataset Data from noc_regions file. We load this data into a table named “OLYMPICS_HISTORY_NOC_REGIONS”. https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/de15cf55-a8e5-4179-b079-abd54ea6b9b1/Query+1+-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 1 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/5b474699-142a-46af-b9b8-ef02404cb8e4/Query+2-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 2 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/69d5d154-99ee-4fa7-a700-923bbaa4ddaa/Query+3-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 3 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/74a86137-b93e-4e15-af52-8168a79e99b0/Query+4-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 4 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/258ea622-21ab-4222-9559-720cbb6e4492/Query+5-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 5 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/1e3b88d8-1bfd-45da-b1ba-6fd035b54023/Query+6-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 6 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/96b6ba72-f195-44e5-a4ce-25543c03d5d2/Query+7-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 7 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/57c5f1c1-21b3-4b8d-8109-4bb3ecdfcbed/Query+8-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 8 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/31d9608a-d1d3-42f4-8022-135e032f9f89/Query+9-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 9 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/9563c230-7218-4064-88a5-33488f727f91/Query+10-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 10 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/fc95e7ff-5f31-4594-af3c-aa2eb7fed9db/Query+11-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 11 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/a188da1a-d428-48ef-b311-c2122cdc4030/Query+12-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 12 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/ba9f63f6-72a1-419e-92a2-c2a1df81ff94/Query+13-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 13 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/34e1e10d-e71a-4b82-b2b3-2f1748e0549a/Query+14-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 14 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/9391b2c5-46c7-4d61-969f-078dce74d575/Query+15-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 15 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/ac45703e-7fdd-490b-9b0f-d9bfbb8599d1/Query+16-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 16 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/e5da0647-8692-4b9a-8516-09eb3dfad81f/Query+17-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 17 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/b1e51ca9-c479-4227-8f55-ca7ecf3bbcca/Query+18-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 18 (Showing few records only) https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/cac1c298-539e-4d46-8ae0-9e6a2bc38a1c/Query+19-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 19 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/89650fcd-5488-48ea-b6e1-b28adb690b9f/Query+20-+Output.png Blog - Practice Writing SQL Queries using Real Dataset - Make it stand out Expected Output: Query 20 (Showing few records only) https://techtfq.com/blog/python-project-to-scrape-youtube-using-youtube-data-api monthly 0.5 2021-10-13 https://techtfq.com/blog/connect-to-postgresql-from-python-using-sql-in-python monthly 0.5 2021-09-13 https://techtfq.com/blog/sql-with-clause-how-to-write-sql-query-using-with-clause monthly 0.5 2021-09-06 https://techtfq.com/blog/how-to-learn-python-for-beginners-step-by-step-guide monthly 0.5 2021-09-06 https://techtfq.com/blog/learn-how-to-write-sql-queries-practice-complex-sql-queries monthly 0.5 2021-09-28 https://images.squarespace-cdn.com/content/v1/5f40c09c48e0fd517ae1f97b/1629527332049-5ULVLJ12OQTUSPY8AL4I/Query+1+-+Users+Table.png Blog - 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