SELECT TABLE_SCHEMA
, TABLE_NAME
, COLUMN_NAME
, CHARACTER_MAXIMUM_LENGTH
, ORDINAL_POSITION
, COLUMN_DEFAULT
, DATA_TYPE
, COLUMN_TYPE
, COLUMN_KEY
, EXTRA
, COLUMN_COMMENT
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = '디비명'
AND COLUMN_NAME = '컬럼명';
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동일 컬럼이 여러개 인 경우 뒤져보기.