Table Rename ,Column Rename and Change Data type Column in Database PostgreSQL.

hi, in this video we will learn about how to rename table name and how to rename column name, and how to change the data type of column in the database PostgreSQL.

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[sajidulahmed]

Thanks, Bina kuch kahe v bohot kuch keh diya!

[milanbiswakarma]

Hi there, I am using the query you provided to change the datatype of variable(supc) from varchar to int but I am getting this error. Can you help? --- [Code: 0, SQL State: 42804] ERROR: column "supc" cannot be cast automatically to type integer
Hint: You might need to specify "USING supc::integer".

[vinayvenkatesh]

how to change existing column varchar datatype to numeric