Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_46052 ( "Team" text, "Tries for" text, "Tries against" text, "Try diff" text, "Points for" text, "Points against" text, "Points diff" text )

### Question ###
What is points diff when points against is 123?

### Accurate SQL ###

SELECT "Points diff" FROM table_46052 WHERE "Points against" = '123'