File "/Users/mac/.virtualenvs/myEnv/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute return self.cursor.execute(sql, params) DataError: query string argument of EXECUTE is null CONTEXT: PL/pgSQL function devices_device_insert_child() line 14 at EXECUTE statemen...
AI代码解释 CREATETABLE`tb_user`(`id`int(11)NOTNULLAUTO_INCREMENT,`uid`varchar(40)DEFAULTNULL,`account_name`varchar(40)DEFAULTNULL,`nick_name`varchar(23)DEFAULTNULL,`password`varchar(30)DEFAULTNULL,`phone`varchar(16)DEFAULTNULL,`register_time`timestampNULLDEFAULTNULL,`update_time`timestampNULLDEFA...
Most expressions interpret a string argument as the name of a field, like Lower('name'). The value argument describes the value to be included in the expression, such as 1, True, or None. Django knows how to convert these Python values into their corresponding database type. The output_...
Description Name of the owner of the saved view. DisplayName IsValidForForm False IsValidForRead True LogicalName owneridname RequiredLevel SystemRequired Type String Format Text FormatName Text ImeMode Auto IsLocalizable False MaxLength 100 OwnerIdYomiName 展開資料表 PropertyValue Description Displ...
The execution plans for some Transact-SQL statements aren't persisted in the plan cache, such as bulk operation statements running on rowstore or statements containing string literals larger than 8 KB in size. These plans only exist while the query is being executed.SQL...
ObjectQuery<T> Include(string path); Parameters path String Dot-separated list of related objects to return in the query results. Returns ObjectQuery<T> A new ObjectQuery<T> with the defined query path. Exceptions ArgumentNullException path is null. ArgumentException path is empty. ...
The Blog model doesn’t define an entry__count attribute by itself, but by using a keyword argument to specify the aggregate function, you can control the name of the annotation: >>> q = Blog.objects.annotate(number_of_entries=Count('entry')) # The number of entries on the first blog...
projection String 定義投影之選取屬性的清單。 parameters ObjectParameter[] 這個方法所使用的零個或多個參數。 傳回 ObjectQuery<DbDataRecord> 屬於ObjectQuery<T> 型別的新 DbDataRecord 執行個體,它就相當於套用了 GROUP BY 的原始執行個體。 例外狀況 ArgumentNullException query 參數是 null 或空字串。
Executes the query and returns the first column of the result. publicarraycolumn($field,$db=null) $fieldstring The field to query over $dbyii\elasticsearch\Connection The database connection used to execute the query. If this parameter is not given, theelasticsearchapplication component will be ...
Specifying thejoin fetchdeclaration is functionally equivalent to adding the fields to the Query's searchStringincandidateString. Positions are 1-based. If the string is not found, returns 0. ABS(number) SQRT(number): Returns the square root of the argument. ...