How to declare a variable and mysql update in liquibase

Question

I want to write the following sql code in liquibase

set @value1 = \"string1\"; set @value2 = \"string2\";

update users set category = REPLACE(category, @valu

Answer 1

If you want to declare and set variables within a changeset's 'sql' tag you just need to remove the ";".

By default liquibase uses ";" to execute, and variables are scoped within an execution. So while this will not work:

DECLARE @value1 varchar(10);
SET @value1 = "string1";

This will work:

DECLARE @value1 varchar(10)
SET @value1 = "string1"

I left off the last ";" on the initialization as I assume you want to do something with the variable