- How do I select top 10 rows in SQL?
- How do I find a specific row in SQL?
- How do you find second highest salary with self join?
- What is offset in SQL query?
- Is Newid random?
- How do I fetch a middle row in SQL?
- How do I select the last 3 records in SQL?
- How do I find the last record in SQL?
- How do I get last 10 records in SQL?
- How do I get random records in SQL?
- How do I get last 5 rows in SQL?
- How do I get last 100 records in SQL?
- How do I select duplicate rows in SQL?
- How do I get only 10 rows in SQL?
- How can I get distinct records from the table without using distinct keyword?
- How do I get the first 10 records in SQL?
- How do I select top 5 rows in SQL?
- How do you find the nth record in SQL?
How do I select top 10 rows in SQL?
SELECT TOP(10) PERCENT contact_id, last_name, first_name FROM contacts WHERE last_name = ‘Anderson’ ORDER BY contact_id; This SQL SELECT TOP example would select the first 10% of the records from the full result set..
How do I find a specific row in SQL?
You need to use rownum , which is Oracle’s equivalent of TOP 1 (from SQL Server) or LIMIT 1 (from MySQL). It is important that you use where rownum = 1 in a higher level SELECT because Oracle requires you to first sort the result set and then it will filter the rows.
How do you find second highest salary with self join?
Type 1 : Using correlated subquery: salary > e1. salary)SELECT name, salary FROM Employee e1 WHERE 2-1 = (SELECT COUNT(DISTINCT salary) FROM #Employee e2 WHERE e2. salary > e1. salary);
What is offset in SQL query?
The OFFSET clause specifies the number of rows to skip before starting to return rows from the query. The offset_row_count can be a constant, variable, or parameter that is greater or equal to zero. The FETCH clause specifies the number of rows to return after the OFFSET clause has been processed.
Is Newid random?
The key here is the NEWID function, which generates a globally unique identifier (GUID) in memory for each row. By definition, the GUID is unique and fairly random; so, when you sort by that GUID with the ORDER BY clause, you get a random ordering of the rows in the table.
How do I fetch a middle row in SQL?
Display Middle RecordSELECT * FROM table_name WHERE ROWNUM <=(SELECT CASE MOD(COUNT(1),2)WHEN 0 THEN(COUNT(1)/2) + 1.ELSE ROUND(COUNT(1)/2) END FROM table_name)MINUS.SELECT * FROM table_name.WHERE ROWNUM < (SELECT (COUNT(1)/2) FROM table_name)
How do I select the last 3 records in SQL?
SELECT * FROM (select * from suppliers ORDER BY supplier_name DESC) suppliers2 WHERE rownum <= 3 ORDER BY rownum DESC; Notice that although you want the last 3 records sorted by supplier_name in ascending order, you actually sort the supplier_name in descending order in this solution.
How do I find the last record in SQL?
to get the last row of a SQL-Database use this sql string: SELECT * FROM TableName WHERE id=(SELECT max(id) FROM TableName); Output: Last Line of your db!
How do I get last 10 records in SQL?
mysql> SELECT * FROM ( -> SELECT * FROM Last10RecordsDemo ORDER BY id DESC LIMIT 10 -> )Var1 -> -> ORDER BY id ASC; The following is the output that displays the last 10 records. We can match both records with the help of the SELECT statement.
How do I get random records in SQL?
MySQL select random records using ORDER BY RAND()The function RAND() generates a random value for each row in the table.The ORDER BY clause sorts all rows in the table by the random number generated by the RAND() function.The LIMIT clause picks the first row in the result set sorted randomly.
How do I get last 5 rows in SQL?
You need to count number of rows inside table ( say we have 12 rows )then subtract 5 rows from them ( we are now in 7 )select * where index_column > 7 select * from users where user_id > ( (select COUNT(*) from users) – 5) you can order them ASC or DESC.
How do I get last 100 records in SQL?
The code should go: SELECT * FROM table_name LIMIT 100,10; for the above case assume that you have 110 rows from the table and you want to select the last ten, 100 is the row you want to start to print(if you are to print), and ten shows how many rows you want to pick from the table.
How do I select duplicate rows in SQL?
Using GROUP BY clause to find duplicates in a table. How it works: First, the GROUP BY clause groups the rows into groups by values in both a and b columns. Second, the COUNT() function returns the number of occurrences of each group (a,b).
How do I get only 10 rows in SQL?
The ANSI SQL answer is FETCH FIRST . If you want ties to be included, do FETCH FIRST 10 ROWS WITH TIES instead. To skip a specified number of rows, use OFFSET , e.g. Will skip the first 20 rows, and then fetch 10 rows.
How can I get distinct records from the table without using distinct keyword?
You can use GROUP BY to select distinct values in SQL without using the DISTINCT keyword….Here’s a solution that does not use the DISTINCT keyword:SELECT t1. … FROM MyTable AS t1.JOIN (SELECT product, consumer FROM MyTable GROUP BY product, consumer)AS t2 ON t1. … GROUP BY t1.
How do I get the first 10 records in SQL?
To select first 10 elements from a database using SQL ORDER BY clause with LIMIT 10. Insert some records in the table using insert command. Display all records from the table using select statement. Here is the alternate query to select first 10 elements.
How do I select top 5 rows in SQL?
SQL SELECT TOP ClauseSQL Server / MS Access Syntax. SELECT TOP number|percent column_name(s) FROM table_name;MySQL Syntax. SELECT column_name(s) FROM table_name. LIMIT number;Example. SELECT * FROM Persons. LIMIT 5;Oracle Syntax. SELECT column_name(s) FROM table_name. WHERE ROWNUM <= number;Example. SELECT * FROM Persons.
How do you find the nth record in SQL?
SELECT * FROM table_name ORDER BY column_name DESC LIMIT n – 1, 1; The query returns the first row after n-1 row(s) so you get the nth highest record.