A computed column cannot be the target of an INSERT or UPDATE statement. Note Because each row in a table can have different values for columns involved in a computed column, the computed column may not have the
select 查询结果可以通过使用 insert 子句插入到表中。 INSERT{INTO|OVERWRITE } [catalog_name.][db_name.]table_name [PARTITIONpart_spec] [column_list] select_statement part_spec: (part_col_name1=val1 [, part_col_name2=val2, ...]) column_list: (col_name1 [, column_name2, ...]) OV...
--IF ELSE declare @x int @y int @z int select @x = 1 @y = 2 @z=3 if @x > @y print 'x > y' --打印字符串'x > y' else if @y > @z print 'y > z' else print 'z > y' --CASE use pangu update employee set e_wage = case when job_level = ’1’ then e_wage*...
CREATE TABLE [IF NOT EXISTS] [catalog_name.][db_name.]table_name ( { <physical_column_definition> | <metadata_column_definition> | <computed_column_definition> }[ , ...n] [ <watermark_definition> ] [ ][ , ...n] ) [COMMENT table_comment] [PARTITIONED BY (partition_column_name1...
a statement abort error generated by the DML statement using theOUTPUTclause will terminate the statement, but the execution of the batch continues and the transaction isn't rolled back. IfSET XACT_ABORTis ON, all run-time errors generated by the DML statement using th...
a statement abort error generated by the DML statement using theOUTPUTclause will terminate the statement, but the execution of the batch continues and the transaction isn't rolled back. IfSET XACT_ABORTis ON, all run-time errors generated by the DML statement using the OUTPUT clause will term...
DBCC execution completed. If DBCC printed error messages, contact your system administrator. 这里等的自动统计信息更新,其实指的就是非SQL语句创建的statistics。上面的例子就证明了,只要一个column有了相应的statistics object,那么显示这个column对应的统计信息,在dbcc show_statistics中就不能用column,而只能用statis...
] type_name REBUILD [ [ NONCLUSTERED ] WITH ( BUCKET_COUNT = bucket_count ) ] } | ADD { <column_definition> | <computed_column_definition> | | | <column_index> } [ ,...n ] | DROP [ { CONSTRAINT [ IF EXISTS ] { constraint_name } [ ,...n ] | INDEX [ IF EXISTS ] ...
The function is modified by using theALTERstatement with theSCHEMABINDINGoption not specified. A function can be schema bound only if the following conditions are true: The function is a Transact-SQL function. The user-defined functions and views referenced by the function are also schema-bound. ...
A computed column can't be the target of an INSERT or UPDATE statement. SET QUOTED_IDENTIFIERmust beONwhen you're creating or changing indexes on computed columns or indexed views. For more information, seeSET QUOTED_IDENTIFIER (Transact-SQL). ...