How do you get middle of the record from a table in SQL?

Here is a simple way: select h. * from (select h. *, row_number() over (order by a, b, c desc) as seqnum, count(*) over () as cnt from #highest h ) h where 2 * rn in (cnt, cnt – 1, cnt + 1);

How do I find the middle element in SQL?

SQL Median

1. Sort the rows in order and find the rank for each row.
2. Determine what is the “middle” rank. For example, if there are 9 rows, the middle rank would be 5.
3. Obtain the value for the middle-ranked row.

How do you display nth record in a table?

To verify the contents of the table use the below statement: SELECT * FROM Employee; Now let’s display the Nth record of the table. Syntax : SELECT * FROM LIMIT N-1,1; Here N refers to the row which is to be retrieved.

How do I view the contents of a table in Oracle?

To view table data:

1. In SQL Developer, search for a table as described in “Viewing Tables”.
2. Select the table that contains the data.
3. In the object pane, click the Data subtab.
4. (Optional) Click a column name to sort the data by that column.
5. (Optional) Click the SQL subtab to view the SQL statement that defines the table.

How do you display all table records?

To display all records and all fields:

1. Open a table or query in Query Design view.
2. Click the down-arrow in the first field on the Field row and then select the tablename. * option.
3. Click the Run button. Access retrieves all of the fields and records for the table and displays them in Datasheet view.

How do I view an existing table in SQL?

Then issue one of the following SQL statement:

1. Show all tables owned by the current user: SELECT table_name FROM user_tables;
2. Show all tables in the current database: SELECT table_name FROM dba_tables;
3. Show all tables that are accessible by the current user:

Is there a mid function in SQL?

MySQL MID() Function The MID() function extracts a substring from a string (starting at any position).

How do you display an element in SQL?

The SQL SELECT Statement

1. SELECT column1, column2, FROM table_name;
2. SELECT * FROM table_name;
3. Example. SELECT CustomerName, City FROM Customers;
4. Example. SELECT * FROM Customers;

How do I view the contents of a table?

click on the table, then either: right-click and select Display. click on the Table > Display Table menu option. hit F9.

How do I view table structures in SQL Developer?

To view tables:

1. In the Connections navigator in SQL Developer, navigate to the Tables node for the schema that includes the table you want to display. If the view is in your own schema, navigate to the Tables node in your schema.
2. Open the Tables node.
3. Click the name of the table that you want to display.

How do I retrieve the middle n records from a query?

Answer: To retrieve the Middle N records from a query, you can use the following syntax: SELECT * FROM (select alias_name.*, rownum rnum from (– your ordered query –) alias_name where rownum <= UPPER_BOUND ) WHERE rnum >= LOWER_BOUND;

How can I retrieve half of records from a table?

How can i retrieve (select) half of records from a table, for example, a table with 1000 rows, retrieve 500 (50\%) from the table. (in this case i can use rownum because we know the exact quantity of rows (1000) – select * from table where rownum <= 500 ), but i have to count every table to achieve the statement.

What are the key and rows of a PL/SQL table?

Think of the key and rows as the index and elements of a one-dimensional array. Like an array, a PL/SQL table is an ordered collection of elements of the same type. Each element has a unique index number that determines its position in the ordered collection.

How do I retrieve records from the suppliers table?

If you wanted to retrieve records 3 through 5 from the suppliers table, sorted by supplier_name in descending order, you would run the following query: If you wanted to retrieve records 2 through 4 from the suppliers table, sorted by supplier_id in ascending order, you would run the following query: