Frequent question: How can we create duplicate table in SQL query?

How do you duplicate a table in SQL?

Open the database in SQL Management Studio. Right-click on the table that you want to duplicate. Select Script Table as -> Create to -> New Query Editor Window. This will generate a script to recreate the table in a new query window.

How do you duplicate a table in SQL Developer?

The first method is called Simple Cloning and as its name implies it create a table from another table without taking into account any column attributes and indexes.

  1. CREATE TABLE new_table SELECT * FROM original_table;
  2. CREATE TABLE adminUsers SELECT * FROM users;
  3. CREATE TABLE new_table LIKE original_table;

How do I write a duplicate query in SQL?

How to Find Duplicate Values in SQL

  1. Using the GROUP BY clause to group all rows by the target column(s) – i.e. the column(s) you want to check for duplicate values on.
  2. Using the COUNT function in the HAVING clause to check if any of the groups have more than 1 entry; those would be the duplicate values.
IT IS INTERESTING:  How do I link a table to another table in SQL?

Can we create two tables in SQL?

Using the “CREATE SCHEMA” command you can combine multiple DDL steps into a single statement. As a result, the failure of a single part causes all commands within the “CREATE SCHEMA” to be rolled back. CREATE SCHEMA is limited to creating tables, views and issuing grants.

How do you copy a table?

To copy the table, press CTRL+C. To cut the table, press CTRL+X.

How do you duplicate a table in Oracle?

Create a duplicate table with dbForge Studio for Oracle

  1. Create a new table. …
  2. Create a table structure. …
  3. Open the Data Comparison Wizard. …
  4. Configure data comparison options. …
  5. Analyze the comparison results. …
  6. Define synchronization options. …
  7. Continue configuring the data sync. …
  8. Make sure the tables are equal.

How can I see 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.

What is query for second highest salary?

We can nest the above query to find the second largest salary. select *from employee group by salary order by salary desc limit 1,1; There are other ways : SELECT name, MAX(salary) AS salary FROM employee WHERE salary IN (SELECT salary FROM employee MINUS SELECT MAX(salary) FROM employee);

How do I get the last row 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!

IT IS INTERESTING:  Frequent question: How does group by and order by work in SQL?

How do I duplicate a row in SQL?

If you’re able to use MySQL Workbench, you can do this by right-clicking the row and selecting ‘Copy row‘, and then right-clicking the empty row and selecting ‘Paste row’, and then changing the ID, and then clicking ‘Apply’.

How do you eliminate duplicate rows in SQL query without distinct?

Below are alternate solutions :

  1. Remove Duplicates Using Row_Number. WITH CTE (Col1, Col2, Col3, DuplicateCount) AS ( SELECT Col1, Col2, Col3, ROW_NUMBER() OVER(PARTITION BY Col1, Col2, Col3 ORDER BY Col1) AS DuplicateCount FROM MyTable ) SELECT * from CTE Where DuplicateCount = 1.
  2. Remove Duplicates using group By.

How do I remove duplicates inner join SQL?

Solution. Select column values in a specific order within rows to make rows with duplicate sets of values identical. Then you can use SELECT DISTINCT to remove duplicates.

Categories JS