相关疑难解决方法(0)

MySql上的错误消息:

Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '='

我已经经历了其他几个帖子,但无法解决这个问题.受影响的部分与此类似:

CREATE TABLE users (
    userID INT UNSIGNED NOT NULL AUTO_INCREMENT,
    firstName VARCHAR(24) NOT NULL,
    lastName VARCHAR(24) NOT NULL,
    username VARCHAR(24) NOT NULL,
    password VARCHAR(40) NOT NULL,
    PRIMARY KEY (userid)
) ENGINE = INNODB CHARACTER SET utf8 COLLATE utf8_unicode_ci;

CREATE TABLE products (
    productID INT UNSIGNED NOT NULL AUTO_INCREMENT,
    title VARCHAR(104) NOT NULL,
    picturePath VARCHAR(104) NULL,
    pictureThumb VARCHAR(104) NULL,
    creationDate DATE NOT NULL,
    closeDate DATE NULL,
    deleteDate DATE NULL, …

在我的 Hibernate 代码中，我正在执行 SQL 命令。我有一个LIKE声明。代码如下。

public List<Object[]> searchProducts(String searchTerm, Session session) {
        Query query = session.createSQLQuery("SELECT product_request_advertisement.idproduct_request_advertisement,\n"
                + "                product_request_advertisement.user_iduser,\n"
                + "                product_request_advertisement.product_idproduct,\n"
                + "                product_request_advertisement.product_units_idproduct_units,\n"
                + "                product_request_advertisement.type,\n"
                + "                product_request_advertisement.grade,\n"
                + "                product_request_advertisement.quantity,\n"
                + "                product_request_advertisement.expected_price,\n"
                + "                product_request_advertisement.required_place,\n"
                + "                product_request_advertisement.required_date,\n"
                + "                product_request_advertisement.extra_information,\n"
                + "                product_request_advertisement.expire_on,\n"
                + "                product_request_advertisement.delete_timestamp,\n"
                + "                product_request_advertisement.date_created,\n"
                + "                product_request_advertisement.last_updated,\n"
                + "                user.name,\n"
                + "                product_unit.unit_name\n"
                + "                FROM product_request_advertisement\n"
                + "                INNER JOIN user ON product_request_advertisement.user_iduser = user.iduser\n" …