You wrote the query SELECT * FROM users WHERE username = ? but forgot to bind the parameter value before execution. What will happen?

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SQL - Security Basics

You wrote the query SELECT * FROM users WHERE username = ? but forgot to bind the parameter value before execution. What will happen?

AThe query will run but return no results

BThe query will run and return all users

CThe query will fail with an error about missing parameter

DThe query will ignore the placeholder and run normally

Step-by-Step Solution

Solution:

Step 1: Understand parameter binding requirement
Placeholders require a value to be bound before execution.
Step 2: Predict behavior without binding
Without binding, the database raises an error about missing parameter value.
Final Answer:
The query will fail with an error about missing parameter -> Option C
Quick Check:
Missing binding causes error = The query will fail with an error about missing parameter [OK]

Quick Trick: Always bind parameters before executing queries [OK]

Common Mistakes:

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