Syntax Error

What This Error Means

This error occurs when the SQL syntax is incorrect, making it difficult for the database management system (DBMS) to understand and execute the query.

Why It Happens

This error typically happens when there's a misplaced keyword, missing or extra parenthesis, or incorrect use of special characters in the SQL query. In this specific case, the error is caused by using a subquery in the WHERE clause without a preceding SELECT statement.

How to Fix It

1. 1To fix this error, you need to restructure the query to include a valid SELECT statement before the FROM and WHERE clauses. Here's the corrected code:
2. 2// Before (broken code)
3. 3SELECT * FROM table_name WHERE (SELECT id FROM another_table WHERE name = 'John') = 1
4. 4// After (fixed code)
5. 5SELECT * FROM table_name WHERE id = (SELECT id FROM another_table WHERE name = 'John')

Example Code Solution

SELECT * FROM table_name WHERE (SELECT id FROM another_table WHERE name = 'John') = 1

SELECT * FROM table_name WHERE id = (SELECT id FROM another_table WHERE name = 'John')