कॉलम-ओरिएंटेड डेटाबेस भरना

NoSQL परिचय

Jake Roach

Data Engineer

Row-oriented बनाम Column-oriented डेटाबेस भरना

Row-oriented:

Column-oriented:

एनालिटिकल डेटाबेस जिसे रोज़ाना अपडेट किया जा रहा है.

Snowflake डेटा वेयरहाउस और उसके nested स्टोरेज ऑब्जेक्ट्स की छवि.

CREATE TABLE books (
    title VARCHAR(100),
    author VARCHAR(100),
    price FLOAT
);

COPY INTO books
FROM 'file://data_science_books.csv'
FILE_FORMAT = (
    TYPE = 'CSV'
    FIELD_DELIMITER = ','
    SKIP_HEADER = 1
);

COPY INTO

FROM

FILE_FORMAT

¹ https://docs.snowflake.com/en/sql-reference/sql/copy-into-table

CREATE TABLE premium_books AS
SELECT *
FROM books
WHERE price > 50.00;

CREATE OR REPLACE TABLE premium_books AS
SELECT *
FROM books
WHERE price > 50.00;

CREATE TABLE ... AS

SELECT ...

OR REPLACE

¹ https://docs.snowflake.com/en/sql-reference/sql/create-table

NoSQL परिचय