What is points diff when points against is 123?
CREATE TABLE table_46052 (
    "Team" text,
    "Tries for" text,
    "Tries against" text,
    "Try diff" text,
    "Points for" text,
    "Points against" text,
    "Points diff" text
)
SELECT "Points diff" FROM table_46052 WHERE "Points against" = '123'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is points diff when points against is 123? ### Input: CREATE TABLE table_46052 (
    "Team" text,
    "Tries for" text,
    "Tries against" text,
    "Try diff" text,
    "Points for" text,
    "Points against" text,
    "Points diff" text
) ### Response: SELECT "Points diff" FROM table_46052 WHERE "Points against" = '123'