I'm starting to learn sql in porstgresql. I have create a table with numeric(6,2) structure and trying to import data. But data has some row that has NULL value. Now I'm getting "ERROR: invalid input syntax for type numeric: NULL"…
Basically I'm trying to insert 5 rows of data into my Book Table and it gives me an error saying that it can't convert the data type varchar to numeric. This is the query I was entering INSERT INTO Book…
From mycsv.csv $data[7] has these: 4294967296/4294967296 4294967296 8589934592/8589934592 I want to calculate and put GB, so they become like this: 4GB/4GB 4GB 8GB/8GB What I did: <?php $a = str_ireplace("/"," ",$data[7]); echo (floor($a/1000000000))."GB"; But it gives error for the ones…
I ran into a portability issue with std::reduce(). There's a call to std::reduce() that compiles in Visual Studio, but not with gcc. It's not clear to me from the cpp documentation if the issue is a bug in gcc, or…
I'm trying to write a PHP function that converts a string of letters to a corresponding string of numbers. For example, the input abc should return 123 and the input wxyz should return 23242526. I have done some research and…
I'm trying to perform a following calculation in a query: t0.value1::decimal * 10 ^ (-1 * t2.value2::decimal) * t0.value3::decimal as total_value However since (-1 * t2.value2::decimal) returns -18 all the results are rounding up to 0. I tried explicitly stating…