I Just do ' python manage.py runserver ' then every things works fine, and even site works fine, but when I am at admin page and then click ' location ' admin model it runs error * relation "location_locationmodel" does not exist; LINE 1: SELECT COUNT...
SELECT COUNT(*)(SELECT DISTINCT a.my_id, a.last_name, a.first_name, b.temp_val. FROM Table_A a INNER JOIN Table_B b on a.a_id
string sql = "SELECT COUNT(*) FROM " + tableName; var rtn = DapperConnection.Query<int>(sql)
I mean, use select count('quoted string') instead select count(*), and the reason was that count(*) goes through all the columns and degrades the performance, other people told me that there is no difference... but if it's true, does this means that count('quoted string') is the same.
http://www.compagniaperlamusica.com/iniziativa.php?id=(select+1+from(select+count(*),concat((select(select+concat(0x3d7e3d,user
select * from (select w.nm_city,i.id_city from installation i join city w on i.id_city=w.id_city group by i.id_city) WIL, (select count(*) as suc from installation where sts=1)
SELECT, FROM — обязательные элементы запроса, которые определяют выбранные столбцы, их порядок и источник данных.
Параметр функции COUNT-это выражение, которое должно быть вычислено для каждой строки. Функция count возвращает количество строк, для которых выражение принимает ненулевое значение. (*- это специальное выражение, которое не вычисляется, оно просто возвращает...
SELECT is used to retrieve rows selected from one or more tables, and can include UNION statements and subqueries.
mysql> SELECT * FROM worker WHERE name LIKE '%ex'