Error image While inserting the data in SQL database table user_recipe_consumption by using multiple select statements i am facing error as – throw err; // Rethrow non-MySQL errors ^ Error: …
Code a SQL statement to change the type to “geeky” for any book that has the word “Computer” or “Networking” in the title
Code a SQL statement to change the type to “geeky” for any book that has the word “Computer” or “Networking” in the title The code isn’t right. What can I use in the WHERE clause to choose these two words and type them as geeky? Answer Try the following
JOIN query and ANY query produced different results
I am new to SQL and I can’t figure out why the following two queries would have different results. The purpose is to list product names if there are any records in the order details table that quantity = 10. The first statement gives more results than the second one. I am using the “Northwind samp…
Unable to MAX(COUNT) and have multiple columns
I have 4 tables, EMPLOYEE, DRIVER, TRIP and TRIPLEG EMPLOYEE table has Name which I want to extract and show with MAX count, has E# which is shared with DRIVER DRIVER table has L#(licence number) which is common with TRIP TRIP table has T#(trip number) which is common with TRIPLEG I’m trying to find the…
Is this php login system secure? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago. Improve this question Is this login page secure, researching about sql-injection, is their …
Calculate overlap time in seconds for groups in SQL
I have a bunch of timestamps grouped by ID and type in the sample data shown below. I would like to find overlapped time between start_time and end_time columns in seconds for each group of ID and between each lead and follower combinations. I would like to show the overlap time only for the first record of e…
SQL: Convert integer into formatted hex string
In PostgreSQL, let’s say I have the following table: I want to convert the myInt column into a formatted string that contains the hex representation of the integer in it and rename the column. So it would look something like the following: What would the query look like to convert the integer? Answer Tr…
google bigQuery subqueries to joins
I have the following table. basically simplified version of my table. I need to aggregate few columns, I will explain what I am trying to do and also what I have written till now. tableName variations can be like pizza toppings, each variation has an amount, say veggie toppings cost 10 cent and meat toppings …
Connect to a DB using DBplyr
Problem I am trying to connect to a SQL Server which is on premises using dbplyr using the instructions here but I keep getting an error saying Invalid object name For simplicity I am using the same object naming convention as RStudio has in the instructions at the link above. Code that produces the error I u…
Unique value Constraint with multiple columns across the table, not the combination in Oracle
In oracle is there a way to enforce uniqueness among two columns? Its not the uniqueness among combination of two columns, but values across table among two columns. References: Unique value constraint across multiple columns Example data, which should not be allowed: Unique constraint on combination of two c…