Čo má klauzulu v sql
Príklady kódu
čo má klauzulu v sql
HAVING clause in SQL is used to
filter records in combination
with the GROUP BY clause. It is
different from WHERE, since
WHERE clause cannot filter
aggregated records. HAVING is a column
operation.
Select department_id, Min (Salary)
From Employees
Group By Department_id
Having MIN (salary) < 3500;
mať kľúčové slovo sql
Having keyword basically similar to if condition
Only returns true conditions
SELECT FIRST_NAME , COUNT(*)
FROM EMPLOYEES
GROUP BY FIRST_NAME
HAVING COUNT(*) > 1s doložkou
HAVING clause in SQL is used to
filter records in combination
with the GROUP BY clause. It is
different from WHERE, since
WHERE clause cannot filter
aggregated records. HAVING is a column
operation.
Select department_id, Min (Salary)
From Employees
Group By Department_id
Having MIN (salary) < 3500;Podobné stránky
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