between

Simple question: I need a solution so that I can find, lets say names, between A-F, INCLUDING all names that start with F. If you use BETWEEN or A >= value <= F you find out that it stops at F. So I am posting this for suggestions. NOTE: User will see 2 textboxes that accept a range user can type. The user refines how far to go in F boundary as such: User types in 'Fa' means the result should return: Fauder, Fail, Famber, ... etc I have currently 2 solutions but there's got a be a better way. Solution 1: This will add 1 to outer boundary but may include result if there's a name that is single

I have a query with a where condition like so: WHERE A.event_date BETWEEN B.start_date AND B.end_date The complexity is that if B.start_date is NULL, it means from time immemorial, similarly B.end_date is NULL, it means the present. So I still want to select a row where A.event_date > B.start_date and B.end_date is NULL , for example. The long-winded way to do this is WHERE A.event_date BETWEEN B.start_date AND B.end_date OR (A.event_date > B.start_date AND B.end_date IS NULL) OR (B.start_date IS NULL AND A.event_date < B.end_date) Is there a more elegant solution (especially since in one

I have a question about this query: SELECT * FROM runs WHERE (NOW() BETWEEN began_at AND finished_at) Do you think it makes sense to create composite index for began_at and finished_at columns? Or it makes sense to create index only for began_at? Your style is very uncommon. Most people would probably write WHERE began_at < NOW() AND finished_at > NOW() However. I would recommend putting an index on both fields. A combined key wont be of use to you because you it would only speed up searcher for specific date combinations. Well this is not entirely true because if you use betree a combined key

I am trying to compare elements of the same array. That means that i want to compare the 0 element with every other element, the 1 element with every other element and so on. The problem is that it is not working as intended. . What i do is I have two for loops that go from 0 to array.length-1.. Then i have an if statement that goes as follows: if(a[i]!=a[j+1]) for (int i = 0; i < a.length - 1; i++) { for (int k = 0; k < a.length - 1; k++) { if (a[i] != a[k + 1]) { System.out.println(a[i] + " not the same with " + a[k + 1] + "\n"); } } } First things first, you need to loop to < a.length

my tbl_df: > p2p_dt_SKILL_A%>% + select(Patch,Date,Prod_DL)%>% + head() Patch Date Prod_DL 1 P1 2015-09-04 3.43 2 P11 2015-09-11 3.49 3 P12 2015-09-18 3.45 ... 4 P13 2015-12-06 3.57 5 P14 2015-12-13 3.43 6 P15 2015-12-20 3.47 I want to select all rows based on the date for example if Date is greater than 2015-09-04 and less than 2015-09-18 The result should be: Patch Date Prod_DL P1 2015-09-04 3.43 P11 2015-09-11 3.49 I tried the following but it returns empty empty vector. p2p_dt_SKILL_A%>% select(Patch,Date,Prod_DL)%>% filter(Date > "2015-09-04" & Date <"2015-09-18") Just returns: > p2p_dt