查询数据库里所有表结构和字段的sql语句

SELECT A.TABLE_NAME AS “表名”,
A.COLUMN_NAME AS “字段名”,
DECODE(A.CHAR_LENGTH,
0,
DECODE(A.DATA_SCALE,
NULL,
A.DATA_TYPE,
A.DATA_TYPE || ‘(’ || A.DATA_PRECISION || ‘,’ ||
A.DATA_SCALE || ‘)’),
A.DATA_TYPE || ‘(’ || A.CHAR_LENGTH || ‘)’) as “字段类型”,
–A.DATA_DEFAULT AS “默认值”,
A.NULLABLE AS “能否为空”,
B.comments AS “备注”
FROM sys.all_tab_columns A, sys.DBA_COL_COMMENTS B
WHERE A.owner = B.owner
AND A.table_name = B.table_name
AND A.COLUMN_NAME = B.COLUMN_NAME
AND A.owner = ‘Y9_FLOWABLE’
AND A.TABLE_NAME like ‘ZNHT_%’
ORDER BY A.TABLE_NAME,a.column_id;

来源：CSDN

作者：大千世界一粒尘埃

链接：https://blog.csdn.net/weixin_45786785/article/details/103804593