c.COLUMN_TYPE as '数据类型 ', IF(kcu.ORDINAL_POSITION is not NULL,'√',' ' ) AS '主键', IF(c.IS_NULLABLE='YES','√',' ' ) AS '为空', COLUMN_COMMENT as '取值说明' from information_schema.columns c left join information_schema.key_column_usage kcu on kcu.TABLE_SCHEMA='mys...
COLUMN_DEF IS_NULLABLE ORDINAL_POSITION SQL_DATA_TYPE SQL_DATETIME_SUB 下表列出了结果集中的列。 驱动程序可以定义列 18 (IS_NULLABLE) 以外的其他列。 应用程序应通过从结果集末尾倒计时而不是指定显式序号位置来获取对特定于驱动程序的列的访问权限。 有关详细信息,请参阅目录函数返回的数据。
SQL_ISV_CHECK_CONSTRAINTS = 标识给定用户拥有的 CHECK 约束。 (中级)SQL_ISV_COLLATIONS = 标识可供给定用户访问的目录的字符排序规则。 (全级别)SQL_ISV_COLUMN_DOMAIN_USAGE = 标识依赖于目录中定义的域且由给定用户拥有的目录的列。 (中级)SQL_ISV_COLUMN_PRIVILEGES = 标识对可供给定用户或授予的永久性表...
is_nullablebit1= 資料行可為 Null 0= 資料行不可為 Null is_ansi_paddedbit1= 如果字元、二進位或變體,數據行會使用ANSI_PADDING ON行為 0= 資料行不是字元、二進位或變體 is_rowguidcolbit1= Column 是宣告的ROWGUIDCOL is_identitybit1= 資料行具有識別值 ...
is_schema_published bit 仅发布对象的架构。 sys.columns 使用语句EXEC sp_help 'sys.columns'查看视图结构信息等,如下: 结构讲解 列名称 数据类型 说明 object_id int 此列所属对象的 ID。 name sysname 列的名称。 在对象中是唯一的。 column_id ...
ParentID is a type of int, and allows null.Here is what I get: "The value for column 'ParentID' in table 'TreeItem' is DBNull."I tried where "(f.ParentID!=DBNull.Value && f.ParentID == TreeItemId)" and i get:Operator '!=' cannot be applied to operands of type 'int' ...
NON_PARTITION_COLUMN, NOTEBOOK_NOT_FOUND, NOT_NULL_ASSERT_VIOLATION, NOT_NULL_CONSTRAINT_VIOLATION, NO_HANDLER_FOR_UDAF, NULLABLE_COLUMN_OR_FIELD, NULLABLE_ROW_ID_ATTRIBUTES, PARTITION_COLUMN_NOT_FOUND_IN_SCHEMA, PS_INVALID_EMPTY_OPTION, PS_INVALID_OPTION, PS_INVALID_OPTION_TYPE, PS_INVALID_...
SQL3042NThe LINKTYPE specified for a DATALINK column is invalid. Explanation The value specified for LINKTYPE for a DATALINK column is invalid. User response Check the LINKTYPE specified. Correct the value and resubmit the command. SQL3043NThe DATALINK SPECIFICATION for DATALINK column(s) is ...
If the error continues, rerun the QMF query without the named column.SQL6008N The file specified in the command is not in QMF data format. Explanation The file specified by the filename parameter is not in the expected QMF format. The command cannot be processed. User response Verify that ...
ANSI_NULL defaults are always on for ALTER COLUMN; if not specified, the column is nullable. ANSI_PADDING padding is always ON for ALTER COLUMN. If the modified column is an identity column, new_data_type must be a data type that supports the identity property. The current setting for SET...