I have a temp table over a 1000 rows but for example purposes as follows #Table and then i have another table as follows (this is not a temp table) Compliance Table how do i check if the records from the temp table doesnt exists in the Compliance table per its ID and Code so from the above data i
Sql update query using When condition
The example below apply null values into the field nom for the others id, how can forbid this action so that it does not modify the already existing values and that I do not wish to modify ? Answer One way is with else: But if you just want to update the rows that match, then use WHERE: No need
Azure SQL Server Created Date
This could be the first of many questions I raise around Azure as I am currently on a mission to tidy up our Azure platform that has previously been setup by other teams. Our SQL Servers that have been setup on Azure have had no tags setup and I want to setup some new tags now on all our existing
Including a column twice in a PostgreSQL index
I’m building a PostgreSQL based work-queue as described here. My queue definition differs slightly from the concept described in the article by using a target timestamp for consumption (due_time): …
count() results without using group by
I am attempting something very similar to last example (Using GROUP BY) on this page: https://thecodedeveloper.com/mysql-count-function/ Referring to the following table of data: The following query: Will produce the following output: Except I want to see the number of employees in each department as well as …
How to structure the database to avoid duplicates in a table
I am doing this exercise where I have to build an sql database (MySql) to store information on private lessons offered by teachers. These are the rules: There is just one predifined week with slot times from Monday to Friday (15-19) Each teacher can teach 1 or more courses Each course can be teached by multip…
How to successfully reference another table before insert with a trigger
I’m trying to create a trigger to validate if a new entry in the table registraties (registrations) contains a valid MNR (employee number) but I’m getting stuck on the part where I’m referencing the table medewerkers (employees). Could someone help me out? Error message received is ORA-24344…
how can i check if value exists before the date specified in sql server
I have the data below in a sql table, let assume the user wants to get data of 2020-11-13 which is but i’d like to get the previous supplier due as well before the date specified which is along with so the actual query i wanna get is this and if there is no previous due i wanna return i
SQL new table with conditions
I have a table and I want through sql to parse it into another table. The problem is that there is a condition: There are 3 columns in old version And I want to store them into new table’s column like : Thanks in advance. Answer You can use case expressions and string concatenation, like so: This uses s…
Presto – pivot table
Hi I have a table like this: I want to convert it into like this: Answer For a fixed list of properties, you can do conditional aggregation: This puts the session id in the first column and 0/1 values in each column, depending on whether the given session owns the given property. To generate the exact output …