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C# 2021-11-09 18:12:14
c# hashtable get value by key
There are few possibilities: you have already inserted null under the mykey before and now you are getting it back since if statement returns true myval is null and your code works flawlessly mykey is of type which has a very strange implementation of Ge... Add solution -
SQL 2021-11-07 07:35:21
left join vs left outer join mysql
-- LEFT OUTER JOIN is equivalent to LEFT JOIN -- b.VALUE1 is null when ID not in table2 (idem for c.VALUE1 in table3) SELECT a.ID, a.NAME, b.VALUE1, c.VALUE1 FROM table1 a LEFT OUTER JOIN table2 b ON a.ID = b.ID LEFT OUTER JOIN table3 c ON a.ID = c.I... Add solution -
SQL 2021-11-05 04:23:10
show if date is nul sql
SELECT * FROM yourtable WHERE yourdatecolumn IS NULL Add solution -
C# 2021-10-29 05:33:13
c# null conditional operator if statement
// This is used if the source of a value is uncertain to exist // For both of these examples, if 'p' is null, 'name' and 'age' will be null // (as opposed to throwing an error) string name = p?.FirstName; string age = p?.Age; string silver = preciousMet... Add solution
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