1.执行mysql存储过程，提示：

illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT)

2.尝试更改数据库的字符串

没有解决问题

我想存储过程当中设计的两个表都是在同一个数据库下，按道理来说字符集是相同的。

3.修改sql，使用完全限定名

原来的sql如下，插入表没有使用完全限定名：

DELIMITER //

CREATE PROCEDURE generate_data()
BEGIN
    DECLARE i INT DEFAULT 1;
    DECLARE random_apply_no VARCHAR(50);
    
    WHILE i <= 10000 DO
        SET random_apply_no = CONCAT('APPLY_', LPAD(i, 4, '0'));

        -- 生成插入数据的SELECT子句，并直接插入到user_base表中
        INSERT INTO user_base (id, apply_no, batch_date, car_no, created_date, due_bill_no, hash_key, id_no, id_type, last_modified_date, phone, project_no, remark, sex, user_id, user_name, version)
        SELECT
            i,
            random_apply_no,
            CURDATE(),
            CONCAT('CAR_', LPAD(i, 4, '0')),
            NOW(),
            random_apply_no,
            MD5(CONCAT('ID_', LPAD(i, 4, '0'))),
            CONCAT('ID_', LPAD(i, 4, '0')),
            'IDENTITY',
            NOW(),
            CONCAT('PHONE_', LPAD(i, 4, '0')),
            'WS10043190001',
            NULL,
            IF(i % 2 = 0, 'MALE', 'FEMALE'),
            CONCAT('USER_', LPAD(i, 4, '0')),
            CONCAT('USER_', LPAD(i, 4, '0')),
            NULL
        FROM dual
        WHERE NOT EXISTS (
            SELECT 1 FROM user_base WHERE apply_no = random_apply_no
        )
        LIMIT 10;

        -- 生成插入数据的SELECT子句，并直接插入到user_bank_card表中
        INSERT INTO user_bank_card (id, user_id, id_no, bank_name, bank_code, bank_card_no, phone, version, created_date, last_modified_date, project_no, due_bill_no, agreement_no, apply_no, account_name, is_default, src_req_sn)
        SELECT
            i,
            CONCAT('USER_', LPAD(i, 4, '0')),
            CONCAT('ID_', LPAD(i, 4, '0')),
            CONCAT('BANK_', LPAD(i, 4, '0')),
            CONCAT('BANK_CODE_', LPAD(i, 4, '0')),
            CONCAT('BANK_CARD_', LPAD(i, 4, '0')),
            CONCAT('PHONE_', LPAD(i, 4, '0')),
            NULL,
            NOW(),
            NOW(),
            'WS10043190001',
            random_apply_no,
            CONCAT('AGREEMENT_', LPAD(i, 4, '0')),
            random_apply_no,
            CONCAT('ACCOUNT_', LPAD(i, 4, '0')),
            1,
            CONCAT('REQ_', LPAD(i, 4, '0'))
        FROM dual
        WHERE NOT EXISTS (
            SELECT 1 FROM user_bank_card WHERE apply_no = random_apply_no
        )
        LIMIT 10;

        SET i = i + 10;
    END WHILE;
END //

DELIMITER ;

修改sql：

DELIMITER //

CREATE PROCEDURE generate_data2()
BEGIN
    DECLARE i INT DEFAULT 1;
    DECLARE random_apply_no VARCHAR(50);
    
    WHILE i <= 10000 DO
        SET random_apply_no = CONCAT('APPLY_', LPAD(i, 4, '0'));

        -- 生成插入数据的SELECT子句，并直接插入到user_base表中
        INSERT INTO acc_loan.user_base (id, apply_no, batch_date, car_no, created_date, due_bill_no, hash_key, id_no, id_type, last_modified_date, phone, project_no, remark, sex, user_id, user_name, version)
        SELECT
            i,
            random_apply_no,
            CURDATE(),
            CONCAT('CAR_', LPAD(i, 4, '0')),
            NOW(),
            random_apply_no,
            MD5(CONCAT('ID_', LPAD(i, 4, '0'))),
            CONCAT('ID_', LPAD(i, 4, '0')),
            'IDENTITY',
            NOW(),
            CONCAT('PHONE_', LPAD(i, 4, '0')),
            'WS10043190001',
            NULL,
            IF(i % 2 = 0, 'MALE', 'FEMALE'),
            CONCAT('USER_', LPAD(i, 4, '0')),
            CONCAT('USER_', LPAD(i, 4, '0')),
            NULL
        FROM dual
        WHERE NOT EXISTS (
            SELECT 1 FROM user_base WHERE apply_no = random_apply_no
        )
        LIMIT 10;

        -- 生成插入数据的SELECT子句，并直接插入到user_bank_card表中
        INSERT INTO acc_loan.user_bank_card (id, user_id, id_no, bank_name, bank_code, bank_card_no, phone, version, created_date, last_modified_date, project_no, due_bill_no, agreement_no, apply_no, account_name, is_default, src_req_sn)
        SELECT
            i,
            CONCAT('USER_', LPAD(i, 4, '0')),
            CONCAT('ID_', LPAD(i, 4, '0')),
            CONCAT('BANK_', LPAD(i, 4, '0')),
            CONCAT('BANK_CODE_', LPAD(i, 4, '0')),
            CONCAT('BANK_CARD_', LPAD(i, 4, '0')),
            CONCAT('PHONE_', LPAD(i, 4, '0')),
            NULL,
            NOW(),
            NOW(),
            'WS10043190001',
            random_apply_no,
            CONCAT('AGREEMENT_', LPAD(i, 4, '0')),
            random_apply_no,
            CONCAT('ACCOUNT_', LPAD(i, 4, '0')),
            1,
            CONCAT('REQ_', LPAD(i, 4, '0'))
        FROM dual
        WHERE NOT EXISTS (
            SELECT 1 FROM user_bank_card WHERE apply_no = random_apply_no
        )
        LIMIT 10;

        SET i = i + 10;
    END WHILE;
END //

DELIMITER ;

执行成功！