The order of execution in SQL is crucial for understanding how queries are processed. Here's the typical order in which SQL clauses are executed:
FROM: The first step is to identify the tables involved in the query. If there are any JOIN operations, they are processed at this stage.
WHERE: This clause filters the rows based on the specified conditions.
GROUP BY: If the query includes a GROUP BY clause, it groups the rows based on the specified columns.
HAVING: This clause filters the groups created by the GROUP BY clause based on the specified conditions.
SELECT: The SELECT clause determines which columns or expressions will be included in the final result set.
DISTINCT: If the DISTINCT keyword is used, duplicate rows are removed from the result set.
ORDER BY: This clause sorts the result set based on the specified columns.
LIMIT/OFFSET: These clauses limit the number of rows returned and specify the starting point within the result set.
