In my application I use multi tenant design in my SQL Server database. My question is: what if one of my customer comes and say, I want my own data as a backup file, how can I create backup file for just that tenant? Is there is any way to do that? Do I need any 3rd party tool? Can
Tag: database
UninitializedPropertyAccessException in Android Studio using Kotlin
I am a beginner making use of a Roomdatabase. Mostly using it to load in and pass items between tables using simple relationships. For some reason it isn’t properly adding the selected item from the recyclerView adapter to the selectedItem variable. Would appreciate any insight into why this is happenin…
MYSQL Error #1415 on Function Creation: Not allowed to return a result set from a function
Trying to create a conditional-based function that will return a result. I don’t if it’s the way I am setting the result value that is causing the error? Making MySQL throw the error code 1415 Not allowed to return a result set from a function. Answer your code has multiple problems, but the bgges…
why empty values are allowed but not null values in composite primary keys
I am working on an App connecting to the Snowflake database. I stumbled upon an issue while loading CSV files. I was using the NULL_IF condition in copy command to change column value to null if any empty value is encountered during the load On investigation, I came to know that one of the columns is part of …
how to include 0 results in count with group by in HIVEQL
I’m a newbie in HIVE. I want to include 0 rows in results I have one table like this is my query example result is but my desired result is How can I get a 0 in results? Answer You can do this but you need to remove where clause. You can also do using self join. EDIT – I
Suggested way to resolve column name/type in a view
I have the following problem that I’m trying to find the best solution for. Let’s say I have a view such as the following: What would be the fastest way to resolve the field names and types of the view? For example, on the above I am looking to get something along the lines of: The first approach …
There are duplicate records in table, we need to select only the latest records as per date using group by or window function in sql
There are duplicate records in table, we need to select only the latest records as per date using group by or window function in sql code: Answer You can simply use a GROUP BY like so If you want to use ROW_NUMBER you have to PARTITION BY the id
How to apply max function in a join query?
I am new to SQL Server, I have 3 tables consider an employee table empid name location 1 abc USA 2 efg UK Another table named location-table location holidaycode uk uk1 usa usa1 And also holidaytable: holiday-code date type uk1 2022-01-01 LM uk1 2022-01-01 RMC Expected result is: empid location holidaycode da…
pyodbc is returning binary data in char field
pyodbc with driver “iSeries Access ODBC Driver” is returning binary output, Ex: original data in the table: B06300 what it returns: b’xc2xf0xf6xf3xf0xf0@@@@@@@@@@@@@@@@@@@@@@@@’ My code: I tried putting add_output_converter and encoder to connection but didn’t work Answer I suspe…
How to convert large .csv file with “too many columns” into SQL database
I was given a large .csv file (around 6.5 Gb) with 25k rows and 20k columns. Let’s call first column ID1 and then each additional column is a value for each of these ID1s in different conditions. Let’s call these ID2s. This is the first time I work with such large files. I wanted to process the .c…