I have a column with strings such as “month” and “year” in it, but when I pass that into the first argument for datediff it fails saying: [‘COLUMN_NAME’] is not a valid date/time component for function DATEDIFF. How can I pass in column_name as the first argument to datedif…
Tag: sql
How do I convert SQL statement with alias in a valid Laravel query builder?
I am working on a Laravel 8 application. I have the flowing SQL statement containing the alias country for the column name of the countries table: I have used this online tool to convert it to a valid Laravel query builder. The problem Unfortunately, the result (visible below), ignores the alias and displays …
convert a single row into 2 rows on impala/hive
I have a huge table with millions of rows/IDs in the below format. I need to convert this into the below format so that the values are in 2 rows as shown below. Can you please help me with an impala/hive query to help with this? Thanks a lot. Answer I think a way would be this one:
How to not add a carriage return (char(13)) if a value is null?
I need to figure out a way to create a column where it has address lines in the same column but after each address line there is carriage return. e.g. Now I do not want to add a carriage return if the fake city is null other wise you get This is what I have as my query: I have
Padding zeros to the end of a string and incrementing them
I have a string that is up to 10 characters long (EX: 2021-00445) when it’s first created in SQL. I would like to pad it with a trailing dash(-) and three zeros (-000). I also want to have them incremented in the interval of 1, so if it has been incremented once, then the new value of the trailing zeros
Rails 5 – I need to return the first record of a group, but there are records that have no group
So as the title suggests I need to return the records from a table, where these records can belong to a group. If there are several records in a group, return only the last one, and if the record does not belong to any group, return it together. I have the following tables (automation_execution) 1 –>…
Use PostreSQL 9.3 to calculate Monthly Recurring Revenue (MRR), by customer
I’ve found a few answers that can get me close here and here, but not exactly what I’m looking for. Here’s the sample data set start end custid amt 2021-02-01 2022-01-31 1 10 2021-03-01 2021-03-31 2 20 The ideal output would generate the series for each customer like the table below month cu…
How can I convert SQL-query to Sequelize?
I have this SQL query: It returns the last message in the given chat. But I don’t understand at all how to execute this moment IN (SELECT MAX(messages.id) FROM messages GROUP BY messages.chatId)) AS lastMessage ON chats.id = lastMessage.chatId in Sequelize… Answer You can use Sequelize.literal lik…
Psycopg2 connection sql database to pandas dataframe
I am working on a project where I am using psycopg2 connection to fetch the data from the database like this, Now after getting the data from the table, I am running some extra operations to convert the data from cursor to pandas dataframe. I am looking for some library or some more robust way to convert the …
Creating new column from existing column with condition SQL
I need help with one table name as Employee. Table employee consist of four columns “ID” “salary”, “position” and “cumulative_salary” . Position consist of senior and junior status and there salary are in different range. I want to add another column from salary…