MySQL CONCAT returns NULL if any field contain NULL. stackoverflow.com. I have following data in my table "devices" … I executed below query … It returns ...
12 сен 2011 ... Специальное значение NULL означает отсутствие данных, .... select 1 from dual where dummy = null; -- запрос не вернёт записей
SQL using If Not Null on a Concatenation - Stack Overflow. stackoverflow.com. If I have the table … This will display Firstname-Middlename-Surname e.g. …
29 мар 2017 ... Null; Boolean; Целое число; Десятичное число; С плавающей запятой ... Литерал null используется для представления значения NULL ...
10 май 2016 ... `id` bigint(20) NOT NULL AUTO_INCREMENT,. `event_type` varchar(150) NOT NULL DEFAULT '',. `username` varchar(150) DEFAULT NULL,.
SELECT table_name,. index_name,. LISTAGG(c.column_name, ',' ) within GROUP ( ORDER BY c.column_position) columns. FROM dba_ind_columns c.
http://www.kanda.com/readnews.php?id=-17+union+select+1,2,3,4,5,6,7 .... and 999999.9 union all select 1,2,concat(version(),0x3a,user()),4,5 and '1'='1 .... '+ union+select+ NULL,NULL,NULL,version(),NULL,NULL,NULL ...
upd: нашел еще инъекцию, где только одно поле. на ' UNION SELECT null-- срабатывает, с ' AND 1=2 UNION SELECT null-- тоже, ...
21 фев 2015 ... Т.е. если у нас на одной таблице для поля указано «INTEGER UNSIGNED DEFAULT 0 NOT NULL» то и на другой должно быть указано ...
diff --git a/core/assets/vendor/zxcvbn/zxcvbn-async.js b/core/assets/vendor/ zxcvbn/zxcvbn-async.js new file mode 100644 index 0000000..404944d --- /dev/ null ...
If I have the table … This will display Firstname-Middlename-Surname e.g. … The second one (Jane’s) displays correct, however since John doesn’t have a middlename, I want it to ignore the second dash.
Postgres is the database Can I use a NULL value for a IN clause? example: … I want to limit to these four values. I have tried the above statement and it doesn't work...
I have noticed a number of queries at work and on SO are using limitations in the form: … Is there a particular reason why people do that and not the more terse … Is it a legacy or a performance issue?
What is the difference between … and … and why does the latter not work?
The Background I was trying to solve the fourth realistic mission in hackthissite.org, and couldn't figure out exactly what SQL I should inject into the URL to retrieve the list of emails.
Calling All Cars Ghost House Death Under The Saquaw The Match Burglar. 192 Kbps 115.02 MB 01:27:24 45.
The IS NULL operator is used to test for empty values (NULL values). The following SQL lists all customers with a
Union select null, null, null, null, null, null, null from information_schema.tables. for a small database containing three tables. this instruction is used in sql injection I tried it and it worked but I didn't really know how it works can somebody help me...
#operation on NULL Vector v1 <- c(NULL, NULL, NULL) str(v1) # NULL.