select

问题 I have a list of values like this: vect_i = ['a','X','c','g','X','t','o','X','q','w','e','r','t','y','u','i','o','p','Y','x','c','v','b','Y','b','n','m','Y','q','a','d','Y',] my goal would be to select in a smart way only the values that are within the last X and the first Y (notice capital X and Y). The output should be something like this: vect_f = ['q','w','e','r','t','y','u','i','o','p','Y','x','c','v','b'] Is there a smart way to do this selection. I have figured out a way to do it by

问题 I am having a table with many columns (but posting only col1, col2, col3 here for simplified post): id col1 col2 col3 source_id a1 765.3 23-Apr-08 cat a5 a2 3298.3 (null) dog a4 a3 8762.1 27-Nov-10 rat a8 a4 (null) (null) (null) (null) a5 (null) (null) (null) a6 a6 (null) (null) (null) (null) I want to fill null values of source _id with values from id . For example, source_id a5 row has null which has to replaced with id a1 values , subsequently, source_id a6 row having null to be replaced

问题 I am having a table with many columns (but posting only col1, col2, col3 here for simplified post): id col1 col2 col3 source_id a1 765.3 23-Apr-08 cat a5 a2 3298.3 (null) dog a4 a3 8762.1 27-Nov-10 rat a8 a4 (null) (null) (null) (null) a5 (null) (null) (null) a6 a6 (null) (null) (null) (null) I want to fill null values of source _id with values from id . For example, source_id a5 row has null which has to replaced with id a1 values , subsequently, source_id a6 row having null to be replaced

问题 I am having a table with many columns (but posting only col1, col2, col3 here for simplified post): id col1 col2 col3 source_id a1 765.3 23-Apr-08 cat a5 a2 3298.3 (null) dog a4 a3 8762.1 27-Nov-10 rat a8 a4 (null) (null) (null) (null) a5 (null) (null) (null) a6 a6 (null) (null) (null) (null) I want to fill null values of source _id with values from id . For example, source_id a5 row has null which has to replaced with id a1 values , subsequently, source_id a6 row having null to be replaced

问题 I have the following table structure that has day wise shifts. At only C shift, time is shared by two days. As you can C Shift starts at 20:30 and ends the next's days 06:00 . The Table structure and data as follows create table `machine_shifts` ( `date` date , `shift_start_time` time , `shift_end_time` time , `shift` varchar (60), `updated_on` timestamp ); insert into `machine_shifts` (`date`, `shift_start_time`, `shift_end_time`, `shift`, `updated_on`) values('2010-01-01','06:00:00','14:30

问题 I have the following table structure that has day wise shifts. At only C shift, time is shared by two days. As you can C Shift starts at 20:30 and ends the next's days 06:00 . The Table structure and data as follows create table `machine_shifts` ( `date` date , `shift_start_time` time , `shift_end_time` time , `shift` varchar (60), `updated_on` timestamp ); insert into `machine_shifts` (`date`, `shift_start_time`, `shift_end_time`, `shift`, `updated_on`) values('2010-01-01','06:00:00','14:30

问题 I have the following table structure that has day wise shifts. At only C shift, time is shared by two days. As you can C Shift starts at 20:30 and ends the next's days 06:00 . The Table structure and data as follows create table `machine_shifts` ( `date` date , `shift_start_time` time , `shift_end_time` time , `shift` varchar (60), `updated_on` timestamp ); insert into `machine_shifts` (`date`, `shift_start_time`, `shift_end_time`, `shift`, `updated_on`) values('2010-01-01','06:00:00','14:30

问题 I have a table that looks like this in a MySQL database: CREATE TABLE IF NOT EXISTS Example(Batch_Num int, Time DATETIME); INSERT INTO Example VALUES (1,'2020-12-04 05:06:12'), (1,'2020-12-04 05:06:13'), (1,'2020-12-04 05:06:14'), (2,'2020-12-04 05:06:20'), (2,'2020-12-04 05:07:12'), (2,'2020-12-04 05:07:20'), (1,'2020-12-04 05:07:25'), (1,'2020-12-04 05:07:35'), (3,'2020-12-04 05:07:35'); I would like to select all lines where the Batch_Num is different from the previous value including the

问题 What I want to know How to also apply the constructor to DOMs.selectTimes . More efficient ways to clean up my code What my code is for I made a script which creates option elements for HTML forms dynamically. I could apply birthYear/birthMonth/birthDay to a constructor. But I can't do it for selectTimes . How can I do it? OR are there any more efficient ways? Here is my code (function() { /* Fetch DOMs */ const DOMs = { selectYear: document.querySelector('#select-birthyear'), selectMonth:

问题 What I want to know How to also apply the constructor to DOMs.selectTimes . More efficient ways to clean up my code What my code is for I made a script which creates option elements for HTML forms dynamically. I could apply birthYear/birthMonth/birthDay to a constructor. But I can't do it for selectTimes . How can I do it? OR are there any more efficient ways? Here is my code (function() { /* Fetch DOMs */ const DOMs = { selectYear: document.querySelector('#select-birthyear'), selectMonth: