As a follow-up to Parametrized CTE, What would be the following return type for creating the following table function in postgres which returns a result-set containing two joined tables? For example, converted to a function it might be something along the lines of: Answer You have two options. You can create …
Tag: sql
How to write a query that joins same table in sql and compares the column values of one table with same column in another table
Write a query that checks for traffic inconsistencies. An inconsistency is when a visit (url, uid, dt, src, rev) involves a source page src that was never visited by user uid. Return the key of the visit (url, uid, dt). This is the table I am working with: The primary key is url, uid, dt for the visit table. …
Parametrized CTE
Let’s say I have a table-function that I’m currently doing with a CTE, for example: Is there a way to parametrize the CTE such that I can do something like: And then I could call it as: Or what is the proper way to parametrize a table function in a postgres (CTE?) Note that I don’t necessari…
Strange variables MySQL [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 11 months ago. Improve this qu…
How to write FILE_FORMAT in Snowflake to Java code?
I am trying to execute COPY INTO statement in Java code like this: And it works fine. Is there any way to add this file_format in Java code, so there is no need to set it up in Snowflake? For example, SQL code of file_format that I have set in Snowflake is Is there any way to write this as
MariaDB trigger to perform an UPDATE and then an INSERT on the same table
I currently have an account table and an account_audit table (all codes are available on a fiddle here). I have two triggers that insert records into the account_audit table based on data inserted into the account table. 1 trigger is an ON INSERT trigger which just inserts these values – that works fine…
Data type “smallserial” in Postgres not highlighted in Visual Studio Code
I am new to postgres, and I am using Visual Studio Code IDE (version 1.62) to write my scripts. While doing so, I am observing this strange behaviour where VS Code doesn’t highlight the data type smallserial (2 bytes). Here is what I see: But I know that the script is correct because this query runs suc…
Invalid identifier in PLSQL
I want to print employee information according to employee-id. But when I compile code I get this error Here is my code Answer You should display local variables’ values, not table columns.
Sql Synapse How to update the latest records
Table MAPPING Table MASTER Output after update Table MAPPING I have an issue to update data in Mapping, I’d like to update only latest records. Note: 1 CUST_ID : M ID thus I need to partition by cust_id order by upd_dt DESC,ID ASC to get the latest records. I’d like to update only rows Parse error…
Count actions that occur only after a certain time from the previous action
I have a dataset in BigQuery where I want to count all non-duplicate actions. A duplicate action is one that occurs within a certain timeframe or ‘countdown’ from prior actions. Once the countdown reaches 0, the timer resets and the very next action is no longer considered to be duplicate. In my e…