Add column in sql

Alter table "Table_Name"
Add 'New_Column_Name' 'Datatype';


alter table product
Add quantity bigint;

Drop column In sql

Alter table 'Table_name' drop column 'Column_Name'
alter table product drop column [Date];

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How to solve network sharing problem (There is no folder)

Press windows + r

type services.msc

Select Standard

Goto Dns Client

Select Automatic

Goto  Function Discovery Resource

Select Automatic

Goto SSDP Discovery

Select Automatic

How to change default reader from windows 10 pdf files

goto start 

select settings

select apps

select defaul apps

Click (choose default apps by for type)

now found .pdf (extension)

Change M-Edge to any pdf reader

now its changed into Fxit reader