š Top 10 Query In Sql
Selecting top results from SQL Count query, including table join ...
· I have this query currently, which selects the top "number of pickups" in descending order. I need to filter only the top 10 rows/highest numbers though. ... Selecting top results from SQL Count query, including table join - Oracle. Ask Question Asked 12 years, 6 months ago. Modified 8 years, 4 months ago. Viewed 4k times 2 . I have this query ...
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The above query will fetch the details of the employee with the 4th highest salary. Let us see how query works starting with the most inner query. Query 1: SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4; Output: Query 2: SELECT MIN(sal) FROM Employee WHERE sal IN (SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4); Output: 5.
5 days ago
Top 7 Dynamic Management View (DMV) Queries in SQL Server - Red9
· Top T-SQL by execution count; Running the same queries over and over can quietly drain SQL Server resources, even if each execution seems lightweight. Run the query below to get the Top 10 most executed T-SQL calls.
7
May 4, 2025
Detecting Expensive Queries - Rishan Solutions
· This query identifies the top 10 queries consuming the most CPU time, providing insights into potential performance bottlenecks. 2. Using SQL Server Management Studio (SSMS) Activity Monitor. SSMS Activity Monitor offers a graphical interface to monitor SQL Server performance in real-time:
May 4, 2025
MAX CASE WHEN in SQL - Interview Query
· Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary. To solve this query, the strategy involves grouping employees by department, counting the total number of employees, and calculating the percentage of employees within each department earning over $100K.
4 days ago
PostgreSQL: Documentation: 17: SELECT
· WITH Clause. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the primary query. The subqueries effectively act as temporary tables or views for the duration of the primary query. Each subquery can be a SELECT, TABLE, VALUES, INSERT, UPDATE, DELETE, or MERGE statement. When writing a data-modifying statement (INSERT, UPDATE, DELETE, or MERGE) in ...
3 days ago
PostgreSQL: Documentation: 17: 2.5. Querying a Table
· To retrieve data from a table, the table is queried.An SQL SELECT statement is used to do this. The statement is divided into a select list (the part that lists the columns to be returned), a table list (the part that lists the tables from which to retrieve the data), and an optional qualification (the part that specifies any restrictions).
3 days ago
Top 10 SQL Tools for Efficient Data Analysis - onlinetoolguides.com
· Weāve picked the top 10 SQL tools for great data analysis. They help with data visualization and SQL reporting. These tools are for all levels, from newbies to experts. ... It helps write and run T-SQL queries well. The Object Explorer makes it easy to manage database objects. It shows them in a table with a search feature. Feature Description;
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May 4, 2025
Top 1 In Sql Query
sql - Select top 1 row with aggregate function - Stack Overflow
· select top 1 with ties id,playen,count(id) over (partition by id,playen) as countt ,temaname from #temp t1 order by row_number() over (partition by id,playen order by id,playen,temaname) Output: id playen countt temaname 1 Peter 3 Alpha 2 Mary 2 Gamma 3 John 2 Delta
4 days ago
query - Strange behavior of TOP 1 clause sql server - Database ...
· But when I add TOP 1 clause to the above query, original DB shows the 2nd row (ignores first row) select TOP 1 person_id, visit_id, verification_code, mobileNo, created_date from person order by verification_code, created_date DESC ... Even if you would run that same query repeatedly only on your SQL Server 2014, you could not expect to get the ...
3 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
· @LouisSomers I think that you have chosen a very bad scheme of hierarchy storage. It is convenient for displaying, but completely inconvenient for SQL processing. If possible, I would recommend going to the standard parent-child storage scheme, and building FQPath in the query if required. This will greatly simplify the processing.
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· It allows you to skip the first N-1 rows and then return the next row, which represents the Nth highest salary. Query to Find the 6th Highest Salary: SELECT * FROM (SELECT * FROM Employee ORDER BY sal DESC LIMIT 6) AS T ORDER BY T.sal ASC LIMIT 1; Explanation: The inner query selects the top 6 salaries from the Employee table ordered in ...
5 days ago
MAX CASE WHEN in SQL - Interview Query
· Using the second solution, let us build a pseudo code SQL query to accomplish precisely that. Concatenate the firstname, second name, ... 1. Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary.
4 days ago
nesting MAX for SELECT - Database Administrators Stack Exchange
· It can be done with a query: SELECT s.* FROM ( SELECT DISTINCT series_id FROM series ) AS ds JOIN series AS s ON s.series_id = ds.series_id AND s.season = ( SELECT si.season FROM series AS si WHERE si.series_id = ds.series_id ORDER BY si.season DESC LIMIT 1 ) AND s.episode = ( SELECT si.episode FROM series AS si WHERE si.series_id = ds.series_id ORDER BY si.season DESC, si.episode DESC LIMIT 1 ) ;
3 days ago
PostgreSQL: Documentation: 17: SELECT
· WITH Clause. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the primary query. The subqueries effectively act as temporary tables or views for the duration of the primary query. Each subquery can be a SELECT, TABLE, VALUES, INSERT, UPDATE, DELETE, or MERGE statement. When writing a data-modifying statement (INSERT, UPDATE, DELETE, or MERGE) in ...
3 days ago
Check Constraints in SQL Server | Best Practices & Examples
· ALTER TABLE Scores ADD CONSTRAINT CHK_Score CHECK (Score >= 1 AND Score <= 150); SQL CHECK constraints in dbForge Studio for SQL Server. Itās clear that adding constraints in SQL, like CHECK, is essential for data integrity, but the more you add, the harder it can get to manage them without running into conflicts or missing something important.
6 days ago
Top 30 Sql Queries
Top 50 SQL Interview Questions with Answers - undercodetesting.com
· Learn Basic SQL in 3.5 hrs; SQL Tutorial Videos (2024) Complete SQL (Beginner to Advanced) Full SQL Course for Beginners & Advanced Users; What Undercode Say. Mastering SQL is crucial for data engineering, cybersecurity, and backend development. These commands form the foundation for database manipulation, query optimization, and security testing.
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4 days ago
100+ SQL Interview Questions and Answers - Intellipaat
· SQL is one of the most popular database programming languages that is used for creating, modifying, retrieving, and manipulating data in databases. If youāre planning to make a career in the database domain, then you have landed at the right place. This blog on top SQL interview questions with answers has the most asked interview questions from top MNCs like Google, Microsoft, and Meta to ...
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5 days ago
SQL Interview Questions For (Freshers + Experienced) - ScholarHat
· Top 50 SQL Queries Interview Questions and Answers To Get Hired; Top SQL Joins Interview Questions You Need to Know; ... Q.30. What do SQL Server cursors mean? In SQL Server, a cursor is a database object that lets us access and modify individual rows one at a time. All that a cursor is is a pointer to a row.
3 days ago
Top 40+ SQL Interview Questions for Experienced Professional
· In this article, we will cover the top SQL interview questions for experienced professionals. We will also go over SQL query interview questions and Oracle PL/SQL interview questions and answers for experienced professionals. ... WHERE birth_date BETWEEN ā1970-09-08ā AND ā1975-11-30ā; 22. Write a Query to Print an Employeeās Name ...
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4 days ago
SQL Intermediate Practice Questions - LearnSQL.com
· To find purchases from the last 30 days, we filter the purchase table using a date condition. We compare purchase_date to the current date minus a 30-day interval. The CURRENT_DATE keyword gives todayās date, and INTERVAL 30 DAY is a standard way to subtract days in ANSI SQL. This ensures we only return rows where the purchase happened within ...
5 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· Finding the Nth highest salary in a database table is a common challenge and interview question for SQL enthusiasts and professionals. This tutorial will guide you step-by-step through multiple methods of solving this problem in SQL, from using ranking functions to subqueries and the LIMIT clause.. In a relational database, retrieving the Nth highest salary is essential for analytical tasks ...
5 days ago
Essential SQL Queries for Data Analysts: Practical Examples ... - LinkedIn
· Hereās a breakdown of 20 essential SQL queries every data analyst should know, with examples that show how they apply in real-world scenarios. 1. Basic Data Retrieval with SELECT
May 4, 2025
Top 40 Oracle Interview Questions & Answers in 2025 - The Knowledge Academy
· Top 40 Oracle Interview Questions & Answers in 2025 ... 30) Explain the difference between a Schema and a User in Oracle. ... refining SQL queries through intelligent coding, minimising the use of unnecessary joins, and avoiding Wildcard Character usage can significantly boost performance.
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4 days ago
Top 100 Query In Sql
sql - Can you specify 'unlimited' when using "Select TOP (@variable ...
· SELECT TOP 100 PERCENT * FROM TABLE_Name ... from TABLE_NAME // then use the value in your query as before select top(@Limit) * from TABLE_NAME Share. Improve this answer. Follow answered Aug 27, 2014 at 22:27. Tanner Tanner. 22 ... SQL Server 2008 select top 100 defined by a variable. 2.
4 days ago
100+ SQL Interview Questions and Answers - Intellipaat
· In conclusion, we covered the top 100+ SQL interview questions and answers in this article that help you prepare and crack SQL jobs. We focused on covering essential concepts of SQL, like the basics of SQL queries, joins, subqueries, indexing, and performance optimization. Whether you are a beginner or an expert, understanding these topics will ...
100
5 days ago
Top 100 Sql Interview Questions And Answers 2025
· Top 50 Sql Interview Questions And Answers For Experienced Freshers Basic sql interview questions for freshers . sql is the backbone of modern data, and with 72% of developers using sql daily, hiring managers expect candidates to go beyond syntax. this section provides the top sql interview questions every fresher must master, from writing efficient queries to structuring data for real world ...
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6 days ago
Top 50 SQL Interview Questions with Answers - Undercode Testing
· Top 50 SQL Interview Questions with Answers - "Undercode Testing": Monitor hackers like a pro. Get real-time updates, AI-powered insights, and expert analysis. ... SQL Query Examples: Fetch āFIRST_NAMEā from Worker table with alias āWORKER_NAMEā: SELECT FIRST_NAME AS WORKER_NAME FROM Worker; 2. Fetch āFIRST_NAMEā in uppercase:
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4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The above query will fetch the details of the employee with the 4th highest salary. Let us see how query works starting with the most inner query. Query 1: SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4; Output: Query 2: SELECT MIN(sal) FROM Employee WHERE sal IN (SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4); Output: 5.
5 days ago
100 MySQL Interview Questions and Answers (2024) - Turing
· A prepared statement in MySQL is a precompiled SQL statement that can be executed multiple times with different input values. You can use a prepared statement in MySQL to improve query performance and prevent SQL injection attacks. ... Click on the 'MySQL Query Analyzer' tab located at the top. Select the database server instance you want to ...
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4 days ago
SQL Intermediate Practice Questions - LearnSQL.com
· In this query, we use the CASE expression to assign each product to a price segment based on its price. The CASE syntax works like an if-else structure: it checks conditions in order and returns the corresponding value. Here, products under $20 are labeled 'budget', those between $20 and $99.99 are 'middle', and anything $100 or more is 'premium'.
5 days ago
100+ PostgreSQL Interview Questions and Answers 2025 - Turing
· In this blog, we have curated the top 100 PostgreSQL interview questions with answers. ... With pg_cron, you can define and manage cron-like schedules for SQL queries or scripts to be executed at specific times or intervals. It provides a simple and convenient way to automate routine database maintenance tasks, data updates, or report ...
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4 days ago
Select Top 10 Query Sql
Selecting top results from SQL Count query, including table join ...
· You need to subquery it for the rownum to work. SELECT * FROM ( SELECT customer.company_name, COUNT (item.pickup_reference) as "Number of Pickups" FROM customer JOIN item ON (customer.reference_no=item.pickup_reference) GROUP BY customer.company_name, item.pickup_reference ORDER BY COUNT (customer.company_name) DESC ) WHERE rownum <= 10
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The above query will fetch the details of the employee with the 4th highest salary. Let us see how query works starting with the most inner query. Query 1: SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4; Output: Query 2: SELECT MIN(sal) FROM Employee WHERE sal IN (SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4); Output: 5.
5 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
· @LouisSomers I think that you have chosen a very bad scheme of hierarchy storage. It is convenient for displaying, but completely inconvenient for SQL processing. If possible, I would recommend going to the standard parent-child storage scheme, and building FQPath in the query if required. This will greatly simplify the processing.
4 days ago
How to Identify and Eliminate Expensive Queries in SQL Server
· Identifying and optimizing these resource-intensive queries is one of the most impactful performance tuning activities a DBA or developer can perform. This guide walks you through practical techniques to find, analyze, and fix your most expensive SQL Server queries. Section 1: Identifying Expensive Queries 1.1 Using SQL Server's Built-in Tools
5 days ago
MAX CASE WHEN in SQL - Interview Query
· Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary. To solve this query, the strategy involves grouping employees by department, counting the total number of employees, and calculating the percentage of employees within each department earning over $100K.
4 days ago
Top 7 Dynamic Management View (DMV) Queries in SQL Server - Red9
· Run the query below to get the Top 10 most expensive T-SQL CPU consumers. SELECT TOP (10) DB_NAME(t.[dbid]) AS [Database] ,REPLACE(REPLACE(LEFT(t.[text], 255), CHAR(10), ''), CHAR(13), '') AS [ShortQueryText] ,qs.total_worker_time AS [Total Worker Time] ,qs.min_worker_time AS [MinWorkerTime] ,qs.total_worker_time / qs.execution_count AS ...
7
May 4, 2025
PostgreSQL: Documentation: 17: SELECT
· WITH Clause. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the primary query. The subqueries effectively act as temporary tables or views for the duration of the primary query. Each subquery can be a SELECT, TABLE, VALUES, INSERT, UPDATE, DELETE, or MERGE statement. When writing a data-modifying statement (INSERT, UPDATE, DELETE, or MERGE) in ...
Feb 20, 2025
5 ideas for new SQL features! - FLEX YOUR DATA
· SELECT top 5 customers BY average_monthly_spend WHERE order_date > three years ago AND monthly_spend increased IN at least 6 months HAVING total_spend > 10000 This is perhaps the least fleshed-out idea on this post, but I think it has potential to bridge the gap between the much-appreciate structure of SQL and the raw expressive power of an LLM.
5
2 days ago
Top Query In Sql Server
Is there a maximum number of rows you can specify for TOP on SQL Server?
· When writing a query with the TOP clause in Microsoft SQL Server 2019, is there a limit to how high a number you can specify before the query fails? For example: SELECT TOP 9999999999999999 FROM ta...
6 days ago
sql - Can you specify 'unlimited' when using "Select TOP (@variable ...
· In SQL Server 2005 or later you can use following syntax to return a a variable number of rows: Declare @Limit Int Set @Limit=5 Select Top(@Limit) * From TableName Is there some magic value, that ...
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· Finding the Nth highest salary in a database table is a common challenge and interview question for SQL enthusiasts and professionals. This tutorial will guide you step-by-step through multiple methods of solving this problem in SQL, from using ranking functions to subqueries and the LIMIT clause.
5 days ago
sql server - How to SELECT TOP (1) with COALESCE to pick the top NOT ...
· It is convenient for displaying, but completely inconvenient for SQL processing. If possible, I would recommend going to the standard parent-child storage scheme, and building FQPath in the query if required.
4 days ago
query - Strange behavior of TOP 1 clause sql server - Database ...
· I have a SQL Server database and restored it on another server on a different machine. Now I run following same query on both DBs which produces same below result set. select person_id, visit_id,
3 days ago
Top 7 Dynamic Management View (DMV) Queries in SQL Server - Red9
· Discover the main Dynamic Management View (DMV) queries to fix slow SQL Server performance. Learn expert techniques for better efficiency.
7
May 4, 2025
MAX CASE WHEN in SQL - Interview Query
· Learn how to use MAX CASE WHEN in SQL to perform conditional aggregation with practical examples. Understand common pitfalls and interview applications in this 2025 SQL guide.
4 days ago
FROM clause plus JOIN, APPLY, PIVOT (T-SQL) - SQL Server
· The SQL Server query processor considers remote statistics and determines whether a remote-join strategy is appropriate. REMOTE join hint is useful for providers that don't provide column distribution statistics.
3 days ago
Sql Query For Top 10 Records
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The above query will fetch the details of the employee with the 4th highest salary. Let us see how query works starting with the most inner query. Query 1: SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4; Output: Query 2: SELECT MIN(sal) FROM Employee WHERE sal IN (SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4); Output: 5.
5 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
· @LouisSomers I think that you have chosen a very bad scheme of hierarchy storage. It is convenient for displaying, but completely inconvenient for SQL processing. If possible, I would recommend going to the standard parent-child storage scheme, and building FQPath in the query if required. This will greatly simplify the processing.
4 days ago
PostgreSQL: Documentation: 17: SELECT
· WITH Clause. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the primary query. The subqueries effectively act as temporary tables or views for the duration of the primary query. Each subquery can be a SELECT, TABLE, VALUES, INSERT, UPDATE, DELETE, or MERGE statement. When writing a data-modifying statement (INSERT, UPDATE, DELETE, or MERGE) in ...
Feb 20, 2025
TABLESAMPLE clause - Azure Databricks - Databricks SQL
· Applies to: Databricks SQL Databricks Runtime 11.3 LTS and above. An optional positive INTEGER constant seed, used to always produce the same set of rows. Use this clause when you want to reissue the query multiple times, and you expect the same set of sampled rows.
2 days ago
PostgreSQL: Documentation: 17: 2.5. Querying a Table
· To retrieve data from a table, the table is queried.An SQL SELECT statement is used to do this. The statement is divided into a select list (the part that lists the columns to be returned), a table list (the part that lists the tables from which to retrieve the data), and an optional qualification (the part that specifies any restrictions).
3 days ago
sql - Get top N rows of each group in MySQL - Stack Overflow
· I would like to produce a MySQL query which provides me with the top N rows grouped by their type. By 'top' I mean with respect to a given ordering. In this example, it could be the order given by ordering the type parameters alphabetically (or by date, if all type parameters are dates). For instance, if N = 2, then the resulting table could be:
3 days ago
Top 50 SQL Interview Questions with Answers - Undercode Testing
· Learn Basic SQL in 3.5 hrs; SQL Tutorial Videos (2024) Complete SQL (Beginner to Advanced) Full SQL Course for Beginners & Advanced Users; What Undercode Say. Mastering SQL is crucial for data engineering, cybersecurity, and backend development. These commands form the foundation for database manipulation, query optimization, and security testing.
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4 days ago
Sql Query To Get Top 10 Records
Selecting top results from SQL Count query, including table join ...
· Using the 'rownum' to get the top result doesn't give the expected result, because it get the 10 first rows which are not ordred, and then order them (Please notify this on a comment on Andrew's response, I don't have the right to add the comment) .
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The outer query filters to get the row where the rank equals 3, ... The limit clause has two components, the First component is to skip a number of rows from the top and the second component is to display the number of rows we want. Query to Find the 4th Highest Salary: ... Structured Query Language (SQL) is a standard database language widely ...
5 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
· @LouisSomers I think that you have chosen a very bad scheme of hierarchy storage. It is convenient for displaying, but completely inconvenient for SQL processing. If possible, I would recommend going to the standard parent-child storage scheme, and building FQPath in the query if required. This will greatly simplify the processing.
4 days ago
MAX CASE WHEN in SQL - Interview Query
· Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary. To solve this query, the strategy involves grouping employees by department, counting the total number of employees, and calculating the percentage of employees within each department earning over $100K.
4 days ago
PostgreSQL: Documentation: 17: SELECT
· WITH Clause. The WITH clause allows you to specify one or more subqueries that can be referenced by name in the primary query. The subqueries effectively act as temporary tables or views for the duration of the primary query. Each subquery can be a SELECT, TABLE, VALUES, INSERT, UPDATE, DELETE, or MERGE statement. When writing a data-modifying statement (INSERT, UPDATE, DELETE, or MERGE) in ...
Feb 20, 2025
Top 50 SQL Interview Questions with Answers - Undercode Testing
· Learn Basic SQL in 3.5 hrs; SQL Tutorial Videos (2024) Complete SQL (Beginner to Advanced) Full SQL Course for Beginners & Advanced Users; What Undercode Say. Mastering SQL is crucial for data engineering, cybersecurity, and backend development. These commands form the foundation for database manipulation, query optimization, and security testing.
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4 days ago
Improve the performance of full-text queries - SQL Server
· The method that this article describes uses the Table-Valued Function (TVF) to filter out rows early and to reduce the number of rows that must be processed later. For example, the following query plan returns 131051 rows that match a CONTAINS search string. Additionally, a join operator in the plan performs additional filtering by using an ...
5 days ago
How to Retrieve Latest Records with Effective Dates in SQL?
· Given your table, which holds multiple records for ex_ID with varying created_date and last_mod_date, the goal is to find the latest record for each ex_ID and mark it as active. The additional requirement is to set an effective date as a future date (e.g., '2099-12-31') for the active record. Let's break this down into manageable steps. Table ...
4 days ago
Sql Query To Select Top 10 Rows
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The inner query selects the top 6 salaries from the Employee table ordered in descending order. The outer query orders the results in ascending order to retrieve the 6th highest salary, skipping the first 5 rows.
5 days ago
sql server - How to SELECT TOP (1) with COALESCE to pick the top NOT ...
· Currently I'm doing a separate query for each column but I'm hoping that this can be achieved in a more elegant way? I'm working with MS SQL Server (and need to support version 2005).
4 days ago
PostgreSQL: Documentation: 17: SELECT
· SELECT SELECT, TABLE, WITH ā retrieve rows from a table or view Synopsis [ WITH [ RECURSIVE ] with_query [, ā¦
3 days ago
PostgreSQL: Documentation: 17: 7.6. LIMIT and OFFSET
· If both OFFSET and LIMIT appear, then OFFSET rows are skipped before starting to count the LIMIT rows that are returned. When using LIMIT, it is important to use an ORDER BY clause that constrains the result rows into a unique order. Otherwise you will get an unpredictable subset of the query's rows.
3 days ago
PostgreSQL: Documentation: 17: 2.5. Querying a Table
· An SQL SELECT statement is used to do this. The statement is divided into a select list (the part that lists the columns to be returned), a table list (the part that lists the tables from which to retrieve the data), and an optional qualification (the part that specifies any restrictions).
3 days ago
Selecting top results from SQL Count query, including table join ...
· I have this query currently, which selects the top "number of pickups" in descending order. I need to filter only the top 10 rows/highest numbers though. How can I do this? I have tried adding 'W...
4 days ago
How to Implement Paging in SQL Server with OFFSET-FETCH
· Learn how to efficiently implement paging in SQL Server using the OFFSET-FETCH clause, improving query performance and data retrieval for large datasets with step-by-step guidance and practical examples.
4 days ago
Top 10 Sql Query Interview Questions
100+ SQL Interview Questions and Answers - Intellipaat
· In conclusion, we covered the top 100+ SQL interview questions and answers in this article that help you prepare and crack SQL jobs. We focused on covering essential concepts of SQL, like the basics of SQL queries, joins, subqueries, indexing, and performance optimization. Whether you are a beginner or an expert, understanding these topics will ...
100
5 days ago
Top 50 SQL Interview Questions with Answers - undercodetesting.com
· Here are some of the most frequently asked SQL interview questions along with their solutions: SQL Query Examples: Fetch āFIRST_NAMEā from Worker table with alias āWORKER_NAMEā: SELECT FIRST_NAME AS WORKER_NAME FROM Worker; 2. Fetch āFIRST_NAMEā in uppercase: SELECT UPPER(FIRST_NAME) FROM Worker; 3. Fetch unique DEPARTMENT values:
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4 days ago
10 Oracle SQL Interview Questions (Updated 2025) - DataLemur
· Beyond just solving the above Oracle SQL interview questions, you should also solve the 200+ DataLemur SQL Interview Questions which come from companies like FAANG and tech startups. Each DataLemur SQL question has multiple hints, step-by-step solutions and crucially, there is an interactive SQL code editor so you can right in the browser run your SQL query and have it checked.
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3 days ago
Top 40+ SQL Interview Questions for Experienced Professional
· SQL Queries Interview Questions and Answers for Experienced Professionals. The interviewers might present a SQL query and ask questions on the same. They can also ask you to write SQL queries. Here are some SQL query interview questions for experienced professionals. 19. Write an SQL Query to Display the Current Date.
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4 days ago
Common SQL Questions for Analyst Interviews ā Analytic Edge4
· Structured Query Language, commonly known as SQL, is the foundational language for data analysis and manipulation. Whether you're aspiring to become a data analyst or preparing for your next big interview, SQL is the most essential skill youāll be tested on. Recruiters often assess candidates through practical SQL scenarios, focusing on logic, data handling capabilities,ā¦
1 day ago
SQL Interview Questions For (Freshers + Experienced) - ScholarHat
· Top 50 SQL Interview Questions for All Experience Levels; Top 50 SQL Queries Interview Questions and Answers To Get Hired; Top SQL Joins Interview Questions You Need to Know; Top SQL MCQ Questions to Boost Your Knowledge and Skills; SQL Viva Questions: A Must-Read for Tech Students; Top 50+ SQL Server Interview Questions and Answers
3 days ago
9 Facebook/Meta SQL Interview Questions - DataLemur
· Facebook/Meta LOVES to ask SQL coding questions during interviews for Data Analyst, Data Science, and Data Engineering jobs. I know this first-hand, because I used to work at FB, and I also co-authored Ace the Data Science Interview with Kevin Huo (an Ex-Facebook Data Scientist). And even though we interviewed years ago, even in 2025, they still ask SQL questions (even though chatGPT can ...
9
6 days ago
Top 50 SQL Interview Questions and Answers
· Whether you're interviewing for a database administrator, data analyst, or backend developer position, SQL skills are often a key requirement. This guide covers the top 50 SQL interview questions ranging from basic to advanced levels, with detailed answers and practical examples. Basic SQL Questions (1-15)
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5 days ago
Sql Query To Fetch Top 10 Rows In Db2
DB2 SQL - Possible to query a list of values without using "or" for ...
· I have a list of values and I am wondering if it's possible to query by said list, rather than having to do an "or" for each row of values or add them into a table and query the table (as I'm about...
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The inner query selects the top 6 salaries from the Employee table ordered in descending order. The outer query orders the results in ascending order to retrieve the 6th highest salary, skipping the first 5 rows.
5 days ago
How efficiently does iSeries DB2 use index with WHERE <>?
· MS SQL dev here, this is my first attempt to optimize a DB2 query on iSeries. I was asked to help improve a huge query which consists entirely of dozens of joined subselects.
3 days ago
PostgreSQL: Documentation: 17: SELECT
· SELECT SELECT, TABLE, WITH ā retrieve rows from a table or view Synopsis [ WITH [ RECURSIVE ] with_query [, ā¦
3 days ago
Sql Get All Tables In A Schema - Restackio
· To retrieve all tables in a schema, you can utilize SQL queries that interact with the information schema of your database. The information schema is a system database that contains metadata about all other databases, including tables, columns, and data types.
5 days ago
How to Implement Paging in SQL Server with OFFSET-FETCH
· Learn how to efficiently implement paging in SQL Server using the OFFSET-FETCH clause, improving query performance and data retrieval for large datasets with step-by-step guidance and practical examples.
4 days ago
Dbeaver export result set to multiple CSV files - Super User
· I'm using the latest version of DBeaver on Mac, querying against a remote MSSQL database and I've got a query that results in 24 million rows. I need to get this data into CSV format, but rather than one huge, unmanageable file with 24 million lines in it, I'd like to get a series of files, each one having a smaller number of lines in them.
4 days ago
Db2 Sql Date Functions - Restackio
· Here are some key points to consider: DB2 SQL DATE Functions: In DB2, the DATEADD function is not explicitly defined as such; instead, you can use the + operator with intervals. For example: SELECT DATE('2023-01-01') + 10 DAYS AS NewDate; SQL Server: SQL Server uses the DATEADD function as described above, and it is widely used in various ...
5 days ago
Oracle Sql Query To Fetch Top 10 Records
Oracle Sql Limit Clause Best Practices - Restackio
· For example, if you want to retrieve only the first 10 records from a dataset, your query would look like this: SELECT order_id, order_date FROM orders LIMIT 10; This query efficiently fetches only the specified number of rows, allowing for quicker testing and validation of your SQL logic. Practical Example of LIMIT
6 days ago
sql - How to select top five or 'N' rows in Oracle 11g - Stack Overflow
· LIMIT clause is not available in Oracle. Seeing your query, you seem to be interested only in a certain number of rows (not ordered based on certain column value) and so you can use ROWNUM clause to limit the number of rows being returned. select distinct ani_digit, ani_business_line from cta_tq_matrix_exp WHERE rownum <= 5
4 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
· The above query will fetch the details of the employee with the 4th highest salary. Let us see how query works starting with the most inner query. Query 1: SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4; Output: Query 2: SELECT MIN(sal) FROM Employee WHERE sal IN (SELECT DISTINCT sal FROM Employee ORDER BY sal DESC LIMIT 4); Output: 5.
5 days ago
Need to count records and group count by date on Oracle
· Unless I am missing something, your query would be something like this: select created, count(*) CreatedCount from yourtable group by created order by created; See SQL Fiddle with Demo. Or if you have a time associated with the date, you can use TRUNC:
4 days ago
MAX CASE WHEN in SQL - Interview Query
· Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary. To solve this query, the strategy involves grouping employees by department, counting the total number of employees, and calculating the percentage of employees within each department earning over $100K.
4 days ago
Oracle Sql Query Between Two Dates - Restackio
· The SQL BETWEEN condition is a powerful tool for filtering data based on a specified range of values, particularly useful for date ranges in SQL queries. This operator allows you to retrieve records that fall within a defined start and end date, making it essential for time-based data analysis. Syntax of SQL BETWEEN
6 days ago
How to fetch records who satisfy a condition of first row having value ...
· SQL query to fetch rows based on a column. 0. select 1st value with many rows out of 2 values based on column condition else 2nd value all rows ORACLE. 2. How to select column values based on condition in Oracle. 0. in database table ,getting records based on one column value and that value is based on other two columns. 0.
4 days ago
BI Report to get the previous and present records of ... - Oracle Community
· Hi Team, I need a working sql query to get the previous and present records of job, salary amount, department and grade in BI Reports. Parameters: - Action Code, from date and to date Actually, it should work on below cases without any issues 1. If in a same day multiple changes done should also fetch the previous and present values 2. Should also fetch the records which are updated in ...
6 days ago