I am using SQLite in my Ionic project, I am saving my Log Files in SQLite server, for this I want to limit the .db file with only last 2000 data values in FIRST IN FIRST OUT basis, does using LIMIT 2000 will give me the last 2000 values stored or the first 2000 values I have stored (which is
Hive TPCDS Query30 “Only SubQuery expressions that are top level conjuncts are allowed “
I am getting the above error when trying to run a tpcds query 30 in Hive. I did research and know this is not allowed in Hive so I am wondering how to rewrite this query. I directly got it from this …
How to show decimal value separately in PostgreSQL?
I have a table named c_price and have a column value like below in PostgreSQL. Now need a query for below result. Answer trunc() and mod() may be used dollars | cents ——: | —-: 123 | 67 db<>fiddle here
Fill every minute in an interval of timestamps with a static record in a MySQL table
I have a time series in MySQL and need to write a cycle as described by the pseudocode below: how do I write this, optimally, in MySQL? Answer You can use a recursive CTE: Here is a db<>fiddle.
MySQL – select distinct values from a column where values are separated by comma
To get the list of distinct values from table1 and column1 is as easy as doing this: However, I inherited (unfortunately) a database where column1 contains values separated by a comma I need to get the list of distinct values from column1, so it looks like this: Any ideas? Answer A generic method uses a recur…
How to connect to a Azure SQL Server through Python
I’ve come across some trouble accessing my SQL Server through Python. I can get it going when my SQL Server is installed locally, but not when it is online. I have used the following code: Connection to SQL Server but then when I try and run: I get the error: InterfaceError: (‘IM002’, ‘…
Update or add value with id
I am just learning SQLDelight and was hoping to find how to add an object with an ID if it doesn’t exist already if it does exist then update that current object with the given id. currently, I am …
I am having issues with a syntax error in PostgreSQL. I am trying to add a query and it is giving me an error
I am taking a Data Analysis Course on Udemy. I am using PostgreSQL. On one of my exercises, I tried to add a column of data and recieved a Syntax Error Message. Here is a screen shot of my code: can …
SQL pivot count and sum 2 columns
I have a table shopid times times2 shop1 5 1 shop2 2 2 shop1 6 1 shop1 1 1 shop2 1 2 Query and I got count correct for column Times Select [shop1], […
Check attribute in trigger function (PostgreSQL)
I have a task in school which requires me to create a table and a trigger. I don’t really know how to explain it but how can I check if cID is inside the select statement within the trigger function ? …