Question

我们可以使用以下链接https://my.vertica.com/docs/6.0.x/HTML/index.htm#14874.htm

boolean result = stmt.execute("COPY customers FROM "
                            + " '/data/customers.txt' DIRECT ENFORCELENGTH");

但它在clojure中不起作用

(clojure.java.jdbc/execute! vertica-db "copy customer1.stage_test_etl_195 from '/tmp/valid-197.csv' DELIMITER '|' DIRECT ENFORCELENGTH ")

ClassCastException java.lang.Character cannot be cast to java.lang.String  clojure.java.jdbc/prepare-statement (jdbc.clj:457)

Answer 1

仔细阅读clojure.jdbc文档。执行的第二个参数！应该是一个向量，第一个元素是SQL和其他（可选）参数。以下可能有效

(clojure.java.jdbc/execute! vertica-db ["copy customer1.stage_test_etl_195 from '/tmp/valid-197.csv' DELIMITER '|' DIRECT ENFORCELENGTH "])

假设这是db后端的合法声明

使用clojure时jdbc执行错误

1 个答案: