function

问题 I am trying to understand the both but I am getting really confused. Online it says: MySQL WEEKDAY() returns the index of the day in a week for a given date (0 for Monday, 1 for Tuesday and ......6 for Sunday). MySQL DAYOFWEEK() returns the week day number (1 for Sunday,2 for Monday …… 7 for Saturday ) for a date specified as argument. Can anyone explain with an example for both? Thank you. 回答1: A relevant difference is that weekday counts the days of the week from Monday, as follows and

问题 I am trying to understand the both but I am getting really confused. Online it says: MySQL WEEKDAY() returns the index of the day in a week for a given date (0 for Monday, 1 for Tuesday and ......6 for Sunday). MySQL DAYOFWEEK() returns the week day number (1 for Sunday,2 for Monday …… 7 for Saturday ) for a date specified as argument. Can anyone explain with an example for both? Thank you. 回答1: A relevant difference is that weekday counts the days of the week from Monday, as follows and

问题 How to Split the given String for the given Delimiter. Ex: INPUT String => '1,2,3,4,5' Delimiter => ',' OUTPUT 1 2 3 4 5 回答1: What about this? The regular expression allows for null list elements too. SQL> with tbl(str) as ( 2 select '1,2,,4,5' from dual 3 ) 4 select regexp_substr(str, '(.*?)(,|$)', 1, level, null, 1) element 5 from tbl 6 connect by level <= regexp_count(str, ',')+1; ELEMENT -------- 1 2 4 5 SQL> See this post for a function that returns a list element: REGEX to select nth

问题 How to Split the given String for the given Delimiter. Ex: INPUT String => '1,2,3,4,5' Delimiter => ',' OUTPUT 1 2 3 4 5 回答1: What about this? The regular expression allows for null list elements too. SQL> with tbl(str) as ( 2 select '1,2,,4,5' from dual 3 ) 4 select regexp_substr(str, '(.*?)(,|$)', 1, level, null, 1) element 5 from tbl 6 connect by level <= regexp_count(str, ',')+1; ELEMENT -------- 1 2 4 5 SQL> See this post for a function that returns a list element: REGEX to select nth

问题 I have a python function that runs other functions. def main(): func1(a,b) func2(*args,*kwargs) func3() Now I want to apply exceptions on main function. If there was an exception in any of the functions inside main, the function should not stop but continue executing next line. In other words, I want the below functionality def main(): try: func1() except: pass try: func2() except: pass try: func3() except: pass So is there any way to loop through each statement inside main function and apply

问题 I have a python function that runs other functions. def main(): func1(a,b) func2(*args,*kwargs) func3() Now I want to apply exceptions on main function. If there was an exception in any of the functions inside main, the function should not stop but continue executing next line. In other words, I want the below functionality def main(): try: func1() except: pass try: func2() except: pass try: func3() except: pass So is there any way to loop through each statement inside main function and apply

问题 Rust allows formatted printing of variables this way: fn main(){ let r:f64 = rand::random(); println!("{}",r); } But this doesn't work: fn main(){ println!("{}",rand::random()); } It shows up this error: | 31 | println!("{}",rand::random()); | ^^^^^^^^^^^^ cannot infer type for type parameter `T` declared on the function `random` Is it possible to use function return value directly with println! ? 回答1: Rust doesn't know what type rand::random should be, so you can use the turbofish to provide

问题 Once I've executed window.stop() , how can I resume default actions? I need to make toggle/switch function, that once fired will run window.stop() , and with second run will recover window actions disabled by window.stop() . 回答1: I misunderstood before how window.stop() works. I was wrong, there are no any "direct inbuilt" javascript method to reload ONLY THESE ELEMENTS stopped by window.stop(), so by this meaning it's impossible. However, if it's needed, we can: loop through each element on

问题 Once I've executed window.stop() , how can I resume default actions? I need to make toggle/switch function, that once fired will run window.stop() , and with second run will recover window actions disabled by window.stop() . 回答1: I misunderstood before how window.stop() works. I was wrong, there are no any "direct inbuilt" javascript method to reload ONLY THESE ELEMENTS stopped by window.stop(), so by this meaning it's impossible. However, if it's needed, we can: loop through each element on

问题 I executed a PL/SQL script that created the following table TABLE_NAME VARCHAR2(30) := 'B2BOWNER.SSC_Page_Map'; I made an insert function for this table using arguments CREATE OR REPLACE FUNCTION F_SSC_Page_Map_Insert( p_page_id IN B2BOWNER.SSC_Page_Map.Page_ID_NBR%TYPE, p_page_type IN B2BOWNER.SSC_Page_Map.Page_Type%TYPE, p_page_dcpn IN B2BOWNER.SSC_Page_Map.Page_Dcpn%TYPE) I was notified I had to declare B2BOWNER.SSC_Page_Map prior to it appearing as an argument to my function. Why am I