What is ISBN UK, when Author is 'Dave Martin', and when ISBN US is 'N/A'?
CREATE TABLE table_name_38 (
    isbn_uk VARCHAR,
    author VARCHAR,
    isbn_us VARCHAR
)
SELECT isbn_uk FROM table_name_38 WHERE author = "dave martin" AND isbn_us = "n/a"
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 ISBN UK, when Author is 'Dave Martin', and when ISBN US is 'N/A'? ### Input: CREATE TABLE table_name_38 (
    isbn_uk VARCHAR,
    author VARCHAR,
    isbn_us VARCHAR
) ### Response: SELECT isbn_uk FROM table_name_38 WHERE author = "dave martin" AND isbn_us = "n/a"