how many porphyria have substrate -aminolevulinic acid
CREATE TABLE table_182499_1 (
    porphyria VARCHAR,
    substrate VARCHAR
)
SELECT COUNT(porphyria) FROM table_182499_1 WHERE substrate = "δ-Aminolevulinic acid"
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: how many porphyria have substrate -aminolevulinic acid ### Input: CREATE TABLE table_182499_1 (
    porphyria VARCHAR,
    substrate VARCHAR
) ### Response: SELECT COUNT(porphyria) FROM table_182499_1 WHERE substrate = "δ-Aminolevulinic acid"