Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 7 years, 5 months ago. Active 7 years, 5 months ago. Viewed 3k times. Does "not exists" allow subqueries? Improve this question. Uma Ilango Uma Ilango 4 4 gold badges 14 14 silver badges 28 28 bronze badges. Add a comment. Active Oldest Votes. Improve this answer.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. We will be looking into all of them with detailed examples but first, let us look into the dataset. Figure 1. Using the classic insert statement, we will be getting an error, observe the query and the action output message.
Notice the query and the action output message. On running the above query, we get only a warning message and not an error, but nothing gets changed in the table if we see the results. Notice the below two images of the action output message and the table data in figure 1. Observe the below query with an action output message received after running it. Also, the action message output said 2 rows affected , which means one got deleted before inserting the other.
In all the above examples, we worked on the data which had inserts and updates based on the primary key.
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