“无法将varchar转换为数字”或“字符串或二进制数据将被截断”

Question

我正在尝试执行插入操作，并且在尝试使用SS＃在where语句中添加附加子句时收到错误。我正在复制的表是所有varchar列，它正常工作，直到我添加行来检查SS＃的匹配。我理解得到转换错误，所以我尝试在子查询中使用转换函数，然后我得到截断错误。

--Grab the max record_serial_number from DESTINATION
declare @rsnOwner numeric
set @rsnOwner = (select max(RECORD_SERIAL_NUMBER)
                from DESTINATION)

--Insert values from TEMP to DESTINATION
insert into DESTINATION
    (
        RECORD_SERIAL_NUMBER,
        AGENT_NUMBER,
        SS_NO,
        LAST_NAME_OWNER,
        FIRST_NAME_OWNER,
        TITLE,
        BIRTHDAY,
        HOME_STREET_ADDRESS,
        HOME_TOWN,
        HOME_STATE,
        HOME_ZIP_CODE,
        HOME_PHONE,
        BANKRUPT,
        MODIFY_DATE,
        MODIFY_TIME,
        USER_ID,
        SHARE_PCT,
        CELL_PHONE,
        CONTACT_TYPE,
        CONTACT_DESC,
        CH_APPROVED,
        CH_DATE,
        ADDRESS_VERIFY,
        VERIFY_DATE
    )
Select
        @rsnOwner + ROW_NUMBER() over (order by agent_number),
        convert(numeric, AGENT_NUMBER),
        convert(numeric, replace(ss_num,'-','')), --remove dashes and convert
        CONTACT_LAST_NAME,
        CONTACT_FIRST_NAME,
        CONTACT_TITLE,
        case when isdate(DOB)=1 then convert(datetime, '19'+right(DOB, 2)+left(DOB, 2)+substring(DOB,3,2)) else null end,   --rearrange the 6 digit date to 8 digit in YYYYMMDD format
        ADDRESS1,
        CITY,
        STATE,
        case when isnumeric(ZIP_CODE)=1 then convert(numeric, ZIP_CODE) else null end,
        case when isnumeric (CONTACT_PHONE_NUM)=1 then replace(convert(numeric, CONTACT_PHONE_NUM),'-','') else null end, --remove dashes and convert
        ')', --BANKRUPT
        convert(datetime, GetDate()) as MODIFY_DATE,
        replace(Convert (varchar(8), GetDate(), 108),':',''),
        'dbo_update', --USERID
        cast(PERCENT_OWNERSHIP as numeric (5,2)) as PERCENT_OWNERSHIP,
        case when isnumeric(CONTACT_CELL_NUM)=1 then replace(convert(numeric, CONTACT_CELL_NUM),'-','') else null end, --remove dashes and convert
        TYPE,
        TYPE_DESC,
        CH_APPROVED,
        case when isdate(CH_DATE)=1 then convert(datetime, '20'+right(CH_DATE, 2)+left(CH_DATE, 2)+substring(CH_DATE,3,2)) else null end, --rearrange the 6 digit date to 8 digit in YYYYMMDD format
        ADD_VERIFICATION,
        case when isdate(ADD_VERIFICATION_DATE)=1 then convert(datetime, '20'+right(ADD_VERIFICATION_DATE, 2)+left(ADD_VERIFICATION_DATE, 2)+substring(ADD_VERIFICATION_DATE,3,2)) else null end --rearrange the 6 digit date to 8 digit in YYYYMMDD format
from TEMP as tmp
where NOT EXISTS(select NULL
                 from DESTINATION as dest
                 where tmp.AGENT_NUMBER = dest.AGENT_NUMBER
                 and
                 convert(numeric, replace(SS_NUM,'-','')) = dest.SS_NO
                 ) 

这些表没有主键，使用agent_number或SS＃是多对多的关系，但它们中的两个是唯一的。我也尝试为SS_NUM创建一个变量，所以我可以在select和where子句中使用它，但显然我不能这样做，并且必须为我的select中的所有内容创建变量。