NpgSql调用函数/例程

Question

鉴于以下Postgresql例程:

CREATE OR REPLACE FUNCTION checkemailexists (emailaddress text) RETURNS boolean
    LANGUAGE plpgsql
AS $$
#print_strict_params on
DECLARE
existsCount int;
BEGIN
    SELECT count(*) INTO STRICT existsCount
        FROM usercontacts WHERE usercontacts.contactaddress = emailAddress;
    IF existsCount > 0 THEN RETURN TRUE;
    ELSE RETURN FALSE;
    END IF;
END
$$

以下.NET(Npgsql)块:

 public bool EmailExists(string email)
        {
            using (var conn = Connection)
            {
                conn.Open();
                using(var tran = conn.BeginTransaction())
                using (var cmd = new NpgsqlCommand("checkemailexists", conn))
                {
                    cmd.CommandType = System.Data.CommandType.StoredProcedure;
                    cmd.Parameters.AddWithValue("@emailAddress",NpgsqlTypes.NpgsqlDbType.Text ,"my@email.com");
                    var ret = (bool)cmd.ExecuteScalar();
                    return ret;
                }
            }
        }

我一直收到以下错误

PostgresException: 42883: function checkemailexists(emailAddress => text) does not exist

我是postgres的新手,我找不到相关的答案也不是很成功.

你能帮我理解为什么当我试着打电话时找不到这个功能吗？

SELECT version();

PostgreSQL 9.5.5 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 5.3.1-14ubuntu2) 5.3.1 20160413, 64-bit

.NET核心

Npgsql 3.1.9

谢谢!

Answer 1

Welp ... Case Sensitive是当天的短语.

emailAddress!= emailaddress