如上图,已知表名和列名,mysql如何查询某一列的注释信息。(某一列,不是全部)。
SELECT
A.name AS table_name,
B.name AS column_name,
C.value AS column_description
FROM sys.tables A
INNER JOIN sys.columns B ON B.object_id = A.object_id
LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id
WHERE A.name = '表名' and b.name = '列名'