I want to dump my database, even after following correct syntax it thows me following error.
Syntax I used :
mysqldump -uroot -p omnichannel_store_india > omnichannel_store_india.sql
Throws errors :
mysqldump: Couldn't execute
'SELECT COLUMN_NAME, JSON_EXTRACT(HISTOGRAM, '$."number-of-buckets-specified"') FROM information_schema.COLUMN_STATISTICS WHERE SCHEMA_NAME = 'omnichannel_store_india' AND TABLE_NAME = 'consignment_items';':
Unknown table 'column_statistics' in information_schema (1109)
解决方案
This is due to a flag "column-statistics" that is enabled by default in mysqldump 8. You can disable it by adding --column-statistics=0.
The command will be something like:
mysqldump --column-statistics=0 --host= --user --password
To disable column statistics by default, you can add following in a MySQL config file, such as /etc/my.cnf or ~/.my.cnf.
[mysqldump]
column-statistics=0
It's brilliantly work for me.
More details about "column-statistics"
Add ANALYZE TABLE statements to the output to generate histogram statistics for dumped tables when the dump file is reloaded. This option is disabled by default because histogram generation for large tables can take a long time.
Ref ( mysql official documentaion link )
本文介绍了一种在使用mysqldump导出数据库时遇到的未知table 'column_statistics' 错误,并提供了解决方案。通过禁用默认启用的column-statistics标志,可以避免在导出过程中出现此问题。
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