如何在DB2中使表列为空或不为空
我在DB2中使用查询来获取表定义/结构如何在DB2中使表列为空或不为空,db2,db2-400,ibm-db2,Db2,Db2 400,Ibm Db2,我在DB2中使用查询来获取表定义/结构 SELECT c.column_name, c.column_default, c.data_type, t.table_name, c.character_maximum_length AS LENGTH FROM sysibm.tables t JOIN sysibm.columns c ON t.table_schema = c.table_schema AND t.table_nam
SELECT c.column_name,
c.column_default,
c.data_type,
t.table_name,
c.character_maximum_length AS LENGTH
FROM sysibm.tables t
JOIN sysibm.columns c
ON t.table_schema = c.table_schema
AND t.table_name = c.table_name
WHERE t.table_schema = SCHEMA
AND t.table_name = TABLE NAME
在本文中,我想得到的列类型是Isnullable
true或false
有人能帮忙吗 在sysibm.columns表中应该有一列可为空