I want to convert dd/mm/yyyy hh:mm:ss string to date format. this is not converting the string to timeformat and always returns me NULL. Please guide where I am going wrong. Answer You need to use correct format. The pattern string supports the following subset of Java SimpleDateFormat. A date string including all fields could be ‘yyyy-MM-dd HH:mm:ss.SSSSSS’, ‘dd/MM/yyyy HH:mm:ss.SSSSSS’, ‘MMM
How can I introduce a has_one_belongs_to_one association in Rails model?
My Rails application has users and tasks created by users. Users can also create a task and assign another user to it. I am not quite sure how to build associations here. I know since a task is created by a user, I can have an association as below, I also want to add an association for creator in the
Parametrizing values to a snowflake query from another table
I’m trying to parametrize an update query reading values from a snowflake table as below. Snowflake query : srcTable : The values of col_name in above table – franchise, acct_type & pref_lang are actual columns of the tgtTable which Im trying to update based on old_val and new_val of srcTable in the above Snowflake query. But I’m running into SQL
How to use INSERT INTO — SELECT with new timestamp?
I’m working on a small website, that keep tracks of students information, When someone makes an update on one of the students I want to archive a copy of the previous record, I know that doing this makes a copy of the current data. But I want to include the date when the edit was made, so I tried this,
How to write DELETE Statement with Inner Query in PostgreSQL?
The below query works fine in Oracle DB. The same query fails in Postgres DB, but the inner query works fine in Postgres DB. I am getting syntax error for this. Error :- [Code: 0, SQL State: 42601] ERROR: syntax error at or near “(” Position: 13 [Script position: 3109 – 3110] How to fix this ? Thanks. Answer use
Database Error: NameError: name ‘db’ is not defined. What am I doing wrong?
On the web I found this illustration to create a database with gui with Tkinter. Everything ok, except when I enter the data and click on the Add button. I’m getting: NameError: name ‘db’ is not defined I think what I am wrong is nonsense in this part of the code. What am I doing wrong? Here is my code
SQl query to show the most popular category in terms of sales quantity for each country and each gender in year XXXX
There are Three tables here Orders, Customers and Items. Please tell me how to solve this. I have tried few combinations but were not successful. Thanks in advance. Answer In Mysql 8 you have ROW_NUMBER to select the “best” from a PARTITION country | gender | category | oYear | total :——– | :—– | :——— | —-: | —-:
Remove duplicates with least row ids from Oracle
I have a database table which looks like ID Book_no Book_name Book_category ID1 1 B1 CB1 ID1 2 B1 CB1 ID1 3 B2 CB1 ID1 4 B2 CB1 ID1 5 B3 CB1 ID2 1 B1 CB2 ID2 2 B1 CB2 ID2 3 B2 CB2 And the expected result is like ID Book_No Book_name Book_category ID1 2 B1 CB1 ID1 4
How to implement this CASE Statement logic on my Date variable?
I am using SQL Server 2014 and I need to implement a specific CASE STATEMENT logic in my T-SQL query. I need to create a new column (Period) in my output based on a column in the Table I am running the query against. This column will contain either “Peak” or “Off-Peak” based on the “StayDate” column in my Table.
Google Sheets QUERY(): Add Additional Blank Rows
I’m studying how Major Events affect the US and AU stock markets, such as the Dotcom bubble, 911, COVID etc. Using GoogleFinance(), I’m trying to compare the weekly close for the S&P500 Index (…