Create Table If It Doesn’t Already Exist
Create Table
IF NOT EXISTS tells Snowflake to only create the table if another table with the same name does not already exist. This can be useful if you don’t want to run an expensive operation if the data is already there.
- Create a table called SUPERHEROES.
CREATE TABLE IF NOT EXISTS SUPERHEROES (
- Column called ID allowing up to five characters
"ID" VARCHAR (5),
- Column called NAME allowing up to 100 characters
"NAME" VARCHAR(100),
- Column called ALTER_EGO allowing up to 100 characters
"ALTER_EGO" VARCHAR(100),
- Column called BANK_BALANCE allowing 38 digits with 2 after the decimal point
"BANK_BALANCE" NUMBER(38, 2)
);
Python Example for Beginners
Two Machine Learning Fields
There are two sides to machine learning:
- Practical Machine Learning:This is about querying databases, cleaning data, writing scripts to transform data and gluing algorithm and libraries together and writing custom code to squeeze reliable answers from data to satisfy difficult and ill defined questions. It’s the mess of reality.
- Theoretical Machine Learning: This is about math and abstraction and idealized scenarios and limits and beauty and informing what is possible. It is a whole lot neater and cleaner and removed from the mess of reality.
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