How do you correctly create a hash index on the email_address column of the customers table in PostgreSQL?

easy📝 Syntax Q3 of 15

PostgreSQL - Indexing Strategies

How do you correctly create a hash index on the email_address column of the customers table in PostgreSQL?

ACREATE INDEX customers_email_hash ON customers USING hash (email_address);

BCREATE HASH INDEX customers_email_hash ON customers (email_address);

CCREATE INDEX ON customers USING hash (email_address);

DCREATE INDEX customers_email_hash ON customers (email_address) USING HASH;

Step-by-Step Solution

Solution:

Step 1: Understand the syntax for creating a hash index
In PostgreSQL, the syntax is CREATE INDEX index_name ON table_name USING hash (column_name);
Step 2: Identify the correct option
CREATE INDEX customers_email_hash ON customers USING hash (email_address); matches the correct syntax with index name, table, USING hash, and column in parentheses.
Final Answer:
CREATE INDEX customers_email_hash ON customers USING hash (email_address); -> Option A
Quick Check:
Check for 'USING hash' keyword and parentheses around column [OK]

Quick Trick: Use 'CREATE INDEX name ON table USING hash (column)' [OK]

Common Mistakes:

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