CREATE TABLE Employee (EmployeeId INT, LastName VARCHAR, FirstName VARCHAR, Title VARCHAR, ReportsTo INT, BirthDate DATETIME, HireDate DATETIME, Address VARCHAR, City VARCHAR, State VARCHAR, Country VARCHAR, PostalCode VARCHAR, Phone VARCHAR, Fax VARCHAR, Email VARCHAR)
CREATE TABLE Invoice (InvoiceId INT, CustomerId INT, InvoiceDate DATETIME, BillingAddress VARCHAR, BillingCity VARCHAR, BillingState VARCHAR, BillingCountry VARCHAR, BillingPostalCode VARCHAR, Total DECIMAL)
CREATE TABLE Genre (GenreId INT, Name VARCHAR)
CREATE TABLE Album (AlbumId INT, Title VARCHAR, ArtistId INT)
CREATE TABLE Artist (ArtistId INT, Name VARCHAR)
CREATE TABLE Customer (CustomerId INT, FirstName VARCHAR, LastName VARCHAR, Company VARCHAR, Address VARCHAR, City VARCHAR, State VARCHAR, Country VARCHAR, PostalCode VARCHAR, Phone VARCHAR, Fax VARCHAR, Email VARCHAR, SupportRepId INT)
CREATE TABLE MediaType (MediaTypeId INT, Name VARCHAR)
CREATE TABLE InvoiceLine (InvoiceLineId INT, InvoiceId INT, TrackId INT, UnitPrice DECIMAL, Quantity INT)
CREATE TABLE Track (TrackId INT, Name VARCHAR, AlbumId INT, MediaTypeId INT, GenreId INT, Composer VARCHAR, Milliseconds INT, Bytes INT, UnitPrice DECIMAL)
CREATE TABLE PlaylistTrack (PlaylistId INT, TrackId INT)
CREATE TABLE Playlist (PlaylistId INT, Name VARCHAR)

A bar chart for listing the number of the phone numbers of all employees, and I want to show in asc by the y axis.
SELECT Phone, COUNT(Phone) FROM Employee GROUP BY Phone ORDER BY COUNT(Phone)
SELECT "Phone", COUNT("Phone") FROM "Employee" GROUP BY "Phone" ORDER BY COUNT("Phone") NULLS FIRST