PostgreSQL - Performance TuningWhich of the following is the correct syntax to create an index on the column 'email' in the 'users' table?ACREATE TABLE idx_email ON users(email);BCREATE INDEX idx_email ON users(email);CCREATE INDEX email_idx users(email);DINDEX CREATE idx_email ON users(email);Check Answer
Step-by-Step SolutionSolution:Step 1: Recall the syntax for creating an indexThe correct syntax is CREATE INDEX index_name ON table_name(column_name);Step 2: Match syntax with optionsCREATE INDEX idx_email ON users(email); matches the correct syntax exactly.Final Answer:CREATE INDEX idx_email ON users(email); -> Option BQuick Check:Index creation syntax = CREATE INDEX idx_email ON users(email); [OK]Quick Trick: Use CREATE INDEX index_name ON table(column) [OK]Common Mistakes:Swapping CREATE TABLE with CREATE INDEXOmitting ON keywordIncorrect order of keywords
Master "Performance Tuning" in PostgreSQL9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepVisualTryChallengeProjectRecallTime
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