Getting ready for a SQL interview can feel like a big task. There are so many things to know, and interviewers love to ask about them! This guide is here to help. We’ve gathered some of the most ...
from sqlglot import parse_one sql='''SELECT 1 FROM ( SELECT 1 ) AS t1( c ), (SELECT (SELECT 1 FROM (FROM ( SELECT 1 ) AS t2( c ), (SELECT t2.c AS c0, t1.c AS c1 ...
1️) Scalar Subquery in SELECT: SELECT e.emp_id, e.emp_name, e.salary, (SELECT ROUND(AVG(salary), 2) FROM employees WHERE dept_id = e.dept_id) AS dept_avg_salary FROM employees e; 2️) Correlated ...
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