Question

我正在编写一个sql server迁移脚本，将所有剪切的日历复制到sd日历，并进行一些小的修改。我写了以下脚本

WHILE (SELECT COUNT(*) FROM CUT_CALENDAR) > 0
BEGIN
    DECLARE @ID INT

    SELECT TOP 1 @ID = ID FROM CUT_CALENDAR

    INSERT INTO SD_CALENDAR  (NAME, CALENDAR_ROLE_ID,DESCRIPTION,USE_IN_CUTOFF,PTY_ID,LOCK_CODE,DATA_OWNER_ID,CNT_ID,NON_BUSINESS_DAYS_MONDAY,NON_BUSINESS_DAYS_TUESDAY,NON_BUSINESS_DAYS_WEDNESDAY,NON_BUSINESS_DAYS_THURSDAY,NON_BUSINESS_DAYS_FRIDAY,NON_BUSINESS_DAYS_SATURDAY,NON_BUSINESS_DAYS_SUNDAY,CCY_ID,CODE,VERSION,SEAL,LST_UPD_TS)
    SELECT NAME, CALENDAR_TYP_ID,DESCRIPTION,'Y',PTY_ID,LOCK_CODE,DATA_OWNER_ID,CNT_ID,NON_BUSINESS_DAYS_MONDAY,NON_BUSINESS_DAYS_TUESDAY,NON_BUSINESS_DAYS_WEDNESDAY,NON_BUSINESS_DAYS_THURSDAY,NON_BUSINESS_DAYS_FRIDAY,NON_BUSINESS_DAYS_SATURDAY,NON_BUSINESS_DAYS_SUNDAY,CCY_ID,CODE,VERSION,SEAL,LST_UPD_TS
    FROM CUT_CALENDAR
    WHERE ID = @ID;

    DELETE FROM CUT_CALENDAR WHERE ID = @ID
END
GO

CUT_CALENDAR包含+ - 30条记录

但是当我运行这个脚本时，它会继续运行并且我会收到： java.lang.OutOfMemoryError：超出GC开销限制

我认为这表明我已经无限循环，但我看不出如何。任何人都可以帮助我吗？

Answer 1

对于“基于设置”的方法，请尝试以下方法：

INSERT INTO sd_calendar (Columns)
SELECT
   (Columns)
FROM
   cut_calendar

DELETE FROM cut_calendar

没有必要一个接一个地做，只会减慢SQL速度。你正在做一个直接复制，然后从原始表中删除，所以使用批量操作，如上所述，你可以减少循环。如果您试图影响所有内容，请不要添加where子句。

Sql Server脚本继续运行

1 个答案: