🏅 Sql Top 10 Distinct

Selecting top results from SQL Count query, including table join ...
 · Selecting top results from SQL Count query, including table join - Oracle. Ask Question ... which selects the top "number of pickups" in descending order. I need to filter only the top 10 rows/highest numbers though. ... COUNT (item.pickup_reference) from ( select distinct customer.company_name, COUNT (item.pickup_reference) , rank() over ...
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.. In a relational database, retrieving the Nth highest salary is essential for analytical tasks ...
5 days ago
query - Strange behavior of TOP 1 clause sql server - Database ...
 · Mike D. has provided an answer on how SQL Server sorts data that might help you understand what is it about the deterministic result you see on some comments.. The Arguments of the ORDER BY doc says:. ASC | DESC Specifies that the values in the specified column should be sorted in ascending or descending order. ASC sorts from the lowest value to highest value.
3 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
 · thanks, that works, I'll have to chew on it for a while though... it looks like you are iterating from top down and the coalesce() will stick to the first not-null item it finds... but I'm having difficulty wrapping my head around the recursive UNION ALL (never thought SQL server could handle self referencing stuff), and the string concatenation of hierarchy is also tricky...
4 days ago
How to Use COUNT() vs DISTINCT COUNT() in SQL
 · To count the number of unique values in a column, SQL Server provides the COUNT(DISTINCT column_name) function. Here’s a simple example: SELECT COUNT(DISTINCT column_name) AS distinct_count FROM table_name; This query will return the number of unique values in column_name. Counting Distinct Values Across Multiple Columns
4 days ago
sql server - How to keep row ordering with DISTINCT command or how to ...
 · Even with your first query the output order is in no way guaranteed. Unless a specific ordering is demanded via an ORDER BY clause the database is free to hand you the results in any order it see fit. For simple queries that can use an index it may look like the order is guaranteed because the output will be in the order of which ever index is used as the main seek/scan, but for anything more ...
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
sql server - SQL counting distinct over partition - Database ...
 · This is, in a way, an extension to Lennart's solution, but it is so ugly that I dare not suggest it as an edit.The goal here is to get the results without a derived table. There may never be the need for that, and combined with the ugliness of the query the whole endeavour may seem like a wasted effort.
4 days ago

Sql Query For Top 10

How to Find Nth Highest Salary from a Table? - GeeksforGeeks
 · 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 descending order. The outer query orders the results in ascending order to retrieve the 6th highest salary, skipping ...
5 days ago
mysql - Selecting Top 10 Employee Salaries - Stack Overflow
 · I'm trying to get the top 10 employee salaries, non-duplicate employees. With the code below I can get the maximum salary for the emp_no, but my from_date and to_date are defaulting to the earliest date values for that emp_no. ... How would this query behave when you have a single employee with two periods with the same max salary? – Ihor ...
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
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
100+ SQL Interview Questions and Answers - Intellipaat
 · Write an SQL query to display each department along with the name of any employee who works in that department. If a department has no employees, show the department with NULL for the employee’s name. ... Write a query to get the top 10% of employees by salary. Hint: Use PERCENT_RANK() to filter out top percentages.
100
5 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
query - Strange behavior of TOP 1 clause sql server - Database ...
 · Now I run following same query on both DBs which produces same below result set. select person_id, visit_id, verification_code, mobileNo, created_date from person order by verification_code, created_date DESC But when I add TOP 1 clause to the above query, original DB shows the 2nd row (ignores first row)
3 days ago
sql - query for selecting top 5 salaries from table - Stack Overflow
 · Possible Duplicate: How to select top N from a table How can a write a query for selecting the top 5 salaries from table ?
4 days ago

Sql Top 100 Distinct

Why is a 'Select distinct limit 100' using tmp tables?
 · There are multiple ways that SELECT DISTINCT col FROM ...LIMIT 100 can be performed:. Case 1: Create a temp table with all rows of col, sort it, then peel off the first 100 (de-dupping as it goes).. Case 2: Build a hash in memory, read col putting it into the hash, stop after 100. (Fast.) Case 3 (if there is INDEX(col)): Leapfrog through the index.This effectively takes 100 BTree dives into ...
3 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
How to Use COUNT() vs DISTINCT COUNT() in SQL
 · To count the number of unique values in a column, SQL Server provides the COUNT(DISTINCT column_name) function. Here’s a simple example: SELECT COUNT(DISTINCT column_name) AS distinct_count FROM table_name; This query will return the number of unique values in column_name. Counting Distinct Values Across Multiple Columns
4 days ago
sql - Solution for speeding up a slow SELECT DISTINCT query in Postgres ...
 · The query is basically: SELECT DISTINCT "my_table"."foo" from "my_table" WHERE... Pretending that I'm 100% certain the DISTINCT portion of the query is the reason it runs slowly, I've omitted the rest of the query to avoid confusion, since it is the distinct portion's slowness that I'm primarily concerned with (distinct is always a source of slowness).
4 days ago
sql - best way to get count and distinct count of rows in single query ...
 · To get distinct count we can use subquery like this: select count(*) from ( select distinct * from table ) I have 15+ columns and have many duplicates rows as well and I want to calculate count of rows as well as distinct count of rows in one query.
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
Oracle Sql Limit Clause Best Practices - Restackio
 · This query efficiently fetches only the specified number of rows, allowing for quicker testing and validation of your SQL logic. Practical Example of LIMIT. Consider the following SQL query that utilizes the LIMIT clause: SELECT order_id, order_date, RANK() OVER (ORDER BY order_date) AS order_rnk FROM orders ORDER BY order_date LIMIT 5;
6 days ago
sql - Gathering distinct patient diagnosis records - Code Review Stack ...
 · This code correctly gathers diagnosis records for a patient to show distinct records based on the AMA ICD9 code, diagnosis description, and date of posting. The output is distinct on (ICD code, cdesc, tposted). The most recent date of usage, tposted, is assigned to each unique combination of (ICD9 code, cdesc).
3 days ago

Top 10 Record In Sql

Is there a way to find TOP X records with grouped data?
 · According to the online manual, Sybase 12.5 supports WINDOW functions and ROW_NUMBER(), though their syntax differs from standard SQL slightly.. Try something like this: SELECT SP.* FROM ( SELECT *, ROW_NUMBER() OVER (windowA ORDER BY [DateStamp] DESC) AS RowNum FROM SomeTable WINDOW windowA AS (PARTITION BY [GroupID]) ) AS SP WHERE SP.RowNum <= 3 ORDER BY RowNum DESC;
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.. In a relational database, retrieving the Nth highest salary is essential for analytical tasks ...
5 days ago
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
 · This will greatly simplify the processing. Now to identify the subordination you need to use LIKE - this is not the fastest procedure, and it uses indexes inefficiently. In addition, you have a limited maximum number of subordinate records, because you have only one character per level. –
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 you’re 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 ...
100
5 days ago
SQL Intermediate Practice Questions - LearnSQL.com
 · The product table contains: product_id, name, category, price, and launch_date. The purchase table records transactions and includes: purchase_id, customer_id, product_id, quantity, total_amount, and purchase_date.; Exercise 1: Monthly Revenue Summary. Exercise: Break down the purchase data by year and month, and show the number of orders (orders) and total revenue (revenue) for each period.
5 days ago
25 Best SQL Query Tools Reviewed In 2025 - The CTO Club
 · Why I picked Navicat for SQL Server: It's tailored for SQL Server administration, providing tools to manage and optimize your databases efficiently. The software includes a visual SQL builder that simplifies query creation without requiring deep SQL knowledge. With its data modeling tools, you can design and visualize database structures with ease.
25
5 days ago
Top 5 SQL Techniques for Efficient ETL Script Creation | MoldStud
 · Top 5 SQL Techniques for Crafting Efficient ETL Scripts. Using bulk loading can drastically decrease the time needed for data import. Employ methods like BULK INSERT in SQL Server or LOAD DATA INFILE in MySQL to handle large datasets. Bulk operations can achieve speeds up to 10 times faster than traditional row-by-row inserts.
5
4 days ago
sql - Spring Data JPA Java - get Last 10 records from query - Stack ...
 · Is there a way to retrieve the last X number of results from a query? For example - If want the first ten results, I see that example here works: setMaxResults for Spring-Data-JPA annotation? public interface UserRepository extends Repository<User, Long> { List<User> findByUsername(String username, Pageable pageable); } //and then I could call it like this Pageable topTen = new PageRequest(0 ...
4 days ago

Select Top 10 From Sql

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
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
FROM clause plus JOIN, APPLY, PIVOT (T-SQL) - SQL Server
 · In Transact-SQL, the FROM clause is available on the following statements: DELETE UPDATE SELECT The FROM clause is usually required on the SELECT statement. The exception is when no table columns are listed, and the only items listed are literals or variables or arithmetic expressions.
3 days ago
PostgreSQL: Documentation: 17: SELECT
 · SELECT SELECT, TABLE, WITH — retrieve rows from a table or view Synopsis [ WITH [ RECURSIVE ] with_query [, …
3 days ago
7.8. WITH Queries (Common Table Expressions) - PostgreSQL
 · GROUP BY region, product; which displays per-product sales totals in only the top sales regions. The WITH clause defines two auxiliary statements named regional_sales and top_regions, where the output of regional_sales is used in top_regions and the output of top_regions is used in the primary SELECT query.
7
3 days ago
PostgreSQL: Documentation: 17: 7.6. LIMIT and OFFSET
 · LIMIT and OFFSET allow you to retrieve just a portion of the rows that are generated by the rest of the query: SELECT select_list FROM table_expression [ ORDER BY ... ] [ LIMIT { count | ALL } ] [ OFFSET start ] If a limit count is given, no more than that many rows will be returned (but possibly fewer, if the query itself yields fewer rows). LIMIT ALL is the same as omitting the LIMIT clause ...
3 days ago
SELECT clause - Azure Databricks - Databricks SQL | Microsoft Learn
 · Learn how to use the SELECT clause syntax of the SQL language in Databricks SQL and Databricks Runtime.
2 days ago

Sql Select Top 10 Rows

t sql - Is there a maximum number of rows you can specify for TOP on ...
 · 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 table ORDER BY name I ask because I am using Bold BI with my SQL Server, which restricts the use of ORDER BY unless I also specify TOP. I want to set the maximum possible number for TOP to work around ...
6 days ago
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
 · Here we are ordering our salaries in descending order so we will get the highest salary first and then subsequently lower salaries. 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:
5 days ago
PostgreSQL: Documentation: 17: SELECT
 · SELECT SELECT, TABLE, WITH — retrieve rows from a table or view Synopsis [ WITH [ RECURSIVE ] with_query [, …
3 days ago
sql server - How to SELECT TOP (1) with COALESCE to pick the top NOT ...
 · How to SELECT TOP (1) with COALESCE to pick the top NOT NULL row for each column?
4 days ago
PostgreSQL: Documentation: 17: 7.6. LIMIT and OFFSET
 · LIMIT and OFFSET allow you to retrieve just a portion of the rows that are generated by the rest of the query: SELECT select_list FROM table_expression [ ORDER BY ... ] [ LIMIT { count | ALL } ] [ OFFSET start ] If a limit count is given, no more than that many rows will be returned (but possibly fewer, if the query itself yields fewer rows). LIMIT ALL is the same as omitting the LIMIT clause ...
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
SQL Group BY, Top N Items for each Group - Stack Overflow
 · I have a SQL Query which gets gets top 5 sold items at a given store. SELECT TOP 5 S.UPCCode, SUM(TotalDollarSales) FROM Sales S WHERE S.StoreId = 1 GROUP BY S.UPCCode ORDER BY SUM(S.TotalDollarSa...
Mar 5, 2013
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

Sql Query Select Top 10

t sql - Is there a maximum number of rows you can specify for TOP on ...
 · 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 table ORDER BY name I ask because I am using Bold BI with my SQL Server, which restricts the use of ORDER BY unless I also specify TOP. I want to set ...
6 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
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
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
sql - Querying a CSV file - Super User
A tutorial (and a another one) on using the SQL like query language with CSV files I found using google. Example Query: logparser -i:CSV "SELECT TOP 10 Time, Count INTO c:\logparser\test\Chart.GIF FROM c:\logparser\test\log.csv ORDER by Time DESC" -charttype:bar3d
SQL Intermediate Practice Questions - LearnSQL.com
 · The product table contains: product_id, name, category, price, and launch_date. The purchase table records transactions and includes: purchase_id, customer_id, product_id, quantity, total_amount, and purchase_date.; Exercise 1: Monthly Revenue Summary. Exercise: Break down the purchase data by year and month, and show the number of orders (orders) and total revenue (revenue) for each period.
5 days ago
SELECT clause - Azure Databricks - Databricks SQL | Microsoft Learn
 · Select all matching rows from the table references. Enabled by default. DISTINCT. Select all matching rows from the table references after removing duplicates in results. named_expression. An expression with an optional assigned name. expression. A combination of one or more values, operators, and SQL functions that evaluates to a value. column ...
2 days ago

Select Top 10 From Table

t sql - Is there a maximum number of rows you can specify for TOP on ...
 · SELECT TOP 9999999999999999 FROM table ORDER BY name I ask because I am using Bold BI with my SQL Server, which restricts the use of ORDER BY unless I also specify TOP. I want to set the maximum possible number for TOP to work around this limitation. sql-server; t-sql; sql-server-2019;
6 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
sql server - How to SELECT TOP(1) with COALESCE to pick the top NOT ...
 · thanks, that works, I'll have to chew on it for a while though... it looks like you are iterating from top down and the coalesce() will stick to the first not-null item it finds... but I'm having difficulty wrapping my head around the recursive UNION ALL (never thought SQL server could handle self referencing stuff), and the string concatenation of hierarchy is also tricky...
4 days ago
PostgreSQL: Documentation: 17: 7.6. LIMIT and OFFSET
 · Thus, using different LIMIT/OFFSET values to select different subsets of a query result will give inconsistent results unless you enforce a predictable result ordering with ORDER BY. This is not a bug; it is an inherent consequence of the fact that SQL does not promise to deliver the results of a query in any particular order unless ORDER BY is used to constrain the order.
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
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
SELECT clause - Azure Databricks - Databricks SQL | Microsoft Learn
 · Select all matching rows from the table references. Enabled by default. DISTINCT. Select all matching rows from the table references after removing duplicates in results. named_expression. An expression with an optional assigned name. expression. A combination of one or more values, operators, and SQL functions that evaluates to a value. column ...
Jan 30, 2025
Trump tariffs live updates: Trump floats slashing China tariffs to 80% ...
 · Top US officials, including Treasury Secretary Scott Bessent and US Trade Representative Jamieson Greer, are set to meet with Chinese counterparts this weekend in Geneva, Switzerland, for ...
1 day ago

Select Top 10 Sql Example

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
The Ultimate SQL Cheatsheet for Developers, Analysts, and Architects
 · SQL (Structured Query Language) is the backbone of database operations, essential for developers, analysts, and architects. Below is a comprehensive breakdown of SQL commands, functions, and best practices. SQL Basics ↦ SELECT – Retrieve data from a table.
3 days ago
7.8. WITH Queries (Common Table Expressions) - PostgreSQL
 · The basic value of SELECT in WITH is to break down complicated queries into simpler parts. An example is: WITH regional_sales AS ( SELECT region, SUM(amount) AS total_sales FROM orders GROUP BY region ), top_regions AS ( SELECT region FROM regional_sales WHERE total_sales > (SELECT SUM(total_sales)/10 FROM regional_sales) ) SELECT region, product, SUM(quantity) AS product_units, SUM(amount) AS ...
7
3 days ago
PostgreSQL: Documentation: 17: SELECT
 · SELECT SELECT, TABLE, WITH — retrieve rows from a table or view Synopsis [ WITH [ RECURSIVE ] with_query [, …
3 days ago
PostgreSQL: Documentation: 17: 7.6. LIMIT and OFFSET
 · Thus, using different LIMIT / OFFSET values to select different subsets of a query result will give inconsistent results unless you enforce a predictable result ordering with ORDER BY.
3 days ago
SQL Intermediate Practice Questions - LearnSQL.com
 · Practice your SQL skills with 10 intermediate-level questions based on real-world scenarios. Includes solutions using GROUP BY, CASE WHEN, subqueries, CTEs, and more.
5 days ago

Select Top 10 Distinct 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. How can I do this? I have tried adding 'W...
4 days ago
PostgreSQL: Documentation: 17: SELECT
 · SELECT DISTINCT ON eliminates rows that match on all the specified expressions. SELECT ALL (the default) will return all candidate rows, including duplicates. (See DISTINCT Clause below.) Using the operators UNION, INTERSECT, and EXCEPT, the output of more than one SELECT statement can be combined to form a single result set.
Feb 20, 2025
PostgreSQL: Documentation: 18: 7.3. Select Lists
 · The DISTINCT ON clause is not part of the SQL standard and is sometimes considered bad style because of the potentially indeterminate nature of its results. With judicious use of GROUP BY and subqueries in FROM, this construct can be avoided, but it is often the most convenient alternative.
3 days ago
sql - How to Count Distinct on Case When? - Stack Overflow
 · I have been building up a query today and I have got stuck. I have two unique Ids that identify if and order is Internal or Web. I have been able to split this out so it does the count of how many ...
4 days ago
How to Use COUNT () vs DISTINCT COUNT () in SQL
 · Learn the key differences between COUNT () and DISTINCT COUNT () in SQL, and discover how to effectively use these aggregate functions to analyze and summarize your database data with precision.
4 days ago
sql - query for selecting top 5 salaries from table - Stack Overflow
 · Possible Duplicate: How to select top N from a table How can a write a query for selecting the top 5 salaries from table ?
4 days ago

Top 10 Distinct Sql Server

How To Count on Distinct Column Values In SQL Server
 · Learn how to efficiently count unique or distinct column values in SQL Server using simple techniques like COUNT (DISTINCT) and GROUP BY clauses, improving query performance and data analysis.
3 days ago
sql - How to Count Distinct on Case When? - Stack Overflow
 · COUNT(DISTINCT CASE WHEN SopOrder_0.SooParentOrderReference LIKE 'INT%' THEN SopOrder_0.SooParentOrderReference END) AS num_int You don't specify the error, but the problem is probably that the THEN is returning a string and the ELSE a number -- so there is an attempt to convert the string values to a number.
Mar 15, 2019
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
How to Use COUNT () vs DISTINCT COUNT () in SQL
 · Learn the key differences between COUNT () and DISTINCT COUNT () in SQL, and discover how to effectively use these aggregate functions to analyze and summarize your database data with precision.
4 days ago
sql server - SQL counting distinct over partition - Database ...
 · Consider voting for OVER clause enhancement request - DISTINCT clause for aggregate functions on the feedback site if you would like that feature added to SQL Server.
Jun 4, 2019
sql server - How to keep row ordering with DISTINCT command or how to ...
 · So you are expecting SQL Server to return the eventual results in the same order that they were inserted (& remember that that's a VALUES () set, not a bunch of individual inserts)? SQL Server doesn't keep track of insert order unless there is some column to do it. With a table variable it is relatively stable but it gets less predictable with a user table, so if you're dumbing it down and ...
4 days ago
sql - Gathering distinct patient diagnosis records - Code Review Stack ...
 · This code correctly gathers diagnosis records for a patient to show distinct records based on the AMA ICD9 code, diagnosis description, and date of posting. The output is distinct on (ICD code, cde...
3 days ago
SQL Group BY, Top N Items for each Group - Stack Overflow
 · I have a SQL Query which gets gets top 5 sold items at a given store. SELECT TOP 5 S.UPCCode, SUM(TotalDollarSales) FROM Sales S WHERE S.StoreId = 1 GROUP BY S.UPCCode ORDER BY SUM(S.TotalDollarSa...
4 days ago

Top And Distinct In Sql Query

SQL Group BY, Top N Items for each Group - Stack Overflow
 · SELECT TOP 5 S.UPCCode, SUM(TotalDollarSales) FROM Sales S WHERE S.StoreId = 1 GROUP BY S.UPCCode ORDER BY SUM(S.TotalDollarSales) desc The Sales table has -> UPCCode, SaleDate, StoreId, TotalDollarSales. I am looking for a query which will return me Top 5 items sold for each of the stores in a single query.
Mar 5, 2013
How to Find Nth Highest Salary from a Table? - GeeksforGeeks
 · Find the employees with top N distinct salaries. Find the lowest salary among the salaries fetched by the above query, this will give us the Nth highest salary. ... Problem: Write a SQL query to find the 2nd largest value in a column in a table. Examples: In the 1st example find the 2nd largest value in column "Income" and in the 2nd one find ...
5 days ago
sql server - How to keep row ordering with DISTINCT command or how to ...
 · Even with your first query the output order is in no way guaranteed. Unless a specific ordering is demanded via an ORDER BY clause the database is free to hand you the results in any order it see fit. For simple queries that can use an index it may look like the order is guaranteed because the output will be in the order of which ever index is used as the main seek/scan, but for anything more ...
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
sql server - Check if any of the values is in a subquery result ...
 · You query should probably be rewritten as an exists instead of an in. See this link for more examples. Your query would then look something along the lines of. select * from Customers C where exists (select 'x' from ordertable o where c.orderid = o.orderid) or exists (select 'x' from ordertable o where c.secondaryOrderId = o.orderid)
4 days ago
How to Use COUNT() vs DISTINCT COUNT() in SQL
 · To count the number of unique values in a column, SQL Server provides the COUNT(DISTINCT column_name) function. Here’s a simple example: SELECT COUNT(DISTINCT column_name) AS distinct_count FROM table_name; This query will return the number of unique values in column_name. Counting Distinct Values Across Multiple Columns
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
 · 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. Practice these queries in real environments like MySQL, PostgreSQL, or SQLite.
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4 days ago

Sql Server Select Top 10 Distinct

SQL Group BY, Top N Items for each Group - Stack Overflow
 · I have a SQL Query which gets gets top 5 sold items at a given store. SELECT TOP 5 S.UPCCode, SUM (TotalDollarSales) FROM Sales S WHERE S.StoreId = 1 GROUP BY S.UPCCode ORDER BY SUM (S.TotalDollarSa...
Mar 5, 2013
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
How To Count on Distinct Column Values In SQL Server
 · Learn how to efficiently count unique or distinct column values in SQL Server using simple techniques like COUNT (DISTINCT) and GROUP BY clauses, improving query performance and data analysis.
3 days ago
sql server - SQL counting distinct over partition - Database ...
 · Consider voting for OVER clause enhancement request - DISTINCT clause for aggregate functions on the feedback site if you would like that feature added to SQL Server.
Jun 4, 2019
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
19 Select Query In Sql Server Where Clause In Sql Server
 · Sql Server Select Distinct Clause T Sql Tutorial With Examples Vrogue It is used to extract only those records that fulfill a specified condition. select all customers from mexico: select column1, column2, select statements, it is also used in update, delete, etc.! below is a selection from the customers table used in the examples: 120 hanover sq.
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May 4, 2025
sql server - How to keep row ordering with DISTINCT command or how to ...
 · So you are expecting SQL Server to return the eventual results in the same order that they were inserted (& remember that that's a VALUES () set, not a bunch of individual inserts)? SQL Server doesn't keep track of insert order unless there is some column to do it. With a table variable it is relatively stable but it gets less predictable with a user table, so if you're dumbing it down and ...
4 days ago
How to Use COUNT () vs DISTINCT COUNT () in SQL
 · Learn the key differences between COUNT () and DISTINCT COUNT () in SQL, and discover how to effectively use these aggregate functions to analyze and summarize your database data with precision.
4 days ago
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