如何在多个 DataGrip 查询中使用变量？

Question

Given I have a bunch of queries Eg

delete from permissions where user_id = 9845 and project_id =2;
delete from users_projects where user_id = 9845 and project_id =2;
delete from users where id = 9845 and project_id =2;

How can I avoid having to update the user_id in each query each time I run these?

Ideally, something like

var userId = 9845

delete from permissions where user_id = userId and project_id =2;
delete from users_projects where user_id = userId and project_id =2;
delete from users where id = userId and project_id =2;

I tried using ? and :userId Eg

delete from permissions where user_id = :userId and project_id =2;
delete from users_projects where user_id = :userId and project_id =2;
delete from users where id = :userId and project_id =2;

This prompts me to enter a User Id via a dialog, which is fine, except I have to enter ir for each row.

I want to be able to update one place / enter the value once.

Is this possible with DataGrip?

Answer 1

You can use ${variable_name} syntax to enter a value only once for queries:

delete from permissions where user_id = ${userId} and project_id =2;
delete from users_projects where user_id = ${userId} and project_id =2;
delete from users where id = ${userId} and project_id =2;