Optimize Azure Storage Costs with Smart Tier — A Complete Guide to Microsoft’s Automated Tiering Feature

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  Smart Tier for Azure Blob & Data Lake Storage — A Smarter, Cost-Efficient Way to Manage Your Data Microsoft has introduced  Smart Tier  (Public Preview), a powerful automated data-tiering feature for  Azure Blob Storage  and  Azure Data Lake Storage . This feature intelligently moves data between the  hot ,  cool , and  cold  access tiers based on real-world usage patterns—no manual policies, rules, or lifecycle setups required. 🔥 What is Smart Tier? Smart Tier automatically analyzes your blob access patterns and moves data to the most cost-efficient tier. It eliminates guesswork and minimizes the need for administrators to manually configure and adjust lifecycle management rules. ✨ Key Benefits Automatic tiering based on access patterns No lifecycle rules or policies required Instant promotion to hot tier when data is accessed Cost-efficient storage for unpredictable workloads No early deletion fees ...
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NVL vs COALESCE

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 NVL vs COALESCE to handle NULL values in SQL.



Both NVL and COALESCE are used in SQL to handle null values, but they have some differences:

Syntax: NVL takes two arguments, while COALESCE takes two or more arguments.

Return value: NVL returns the first argument if it is not null, otherwise it returns the second argument. COALESCE returns the first non-null value from its arguments.

Here are some examples to illustrate the differences:

NVL Example:


SELECT NVL(NULL, 'hello') FROM dual;
This will return 'hello', since the first argument is null.


SELECT NVL('world', 'hello') FROM dual;
This will return 'world', since the first argument is not null.

COALESCE Example:

SELECT COALESCE(NULL, NULL, 'hello', 'world') FROM dual;

This will return 'hello', since it is the first non-null value.


SELECT COALESCE(NULL, 'hello', 'world') FROM dual;
This will also return 'hello', since it is the first non-null value.

Hope it helps.

#sql #null #handling

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