摘要:
查询索引信息 show index from db.table; select TABLE_SCHEMA,TABLE_NAME,COLUMN_NAME,CARDINALITY from information_schema.STATISTICS isswhere iss.table_name='ta 阅读全文
posted @ 2020-04-09 11:57
BensonWei
阅读(1243)
评论(0)
推荐(0)
摘要:
https://dev.mysql.com/doc/refman/8.0/en/explain-output.html 8.8.2 EXPLAIN Output Format The EXPLAIN statement provides information about how MySQL exe 阅读全文
posted @ 2020-04-09 11:27
BensonWei
阅读(1218)
评论(0)
推荐(0)

浙公网安备 33010602011771号