The column parameters specify the names of the columns of the table. Here we see "varchar, int, decimal, etc." these are the datatype. In SQL, datatype defines the type of data that column can hold (e.g. varchar, int, decimal, date, etc.). We create Id as the "Primar...
sql server create table 给字段添加注释说明 EXEC sys.sp_addextendedproperty @name=N'MS_Description',@level1name=N'a_jcgl_data',@level2name=N'id', @value=N'自增id' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE', @level2type=N'COLUMN' 其中@level1name为表名 @...
指定檔案會成長到磁碟已滿為止。 在 SQL Server 中,指定為無限成長的記錄檔,其大小上限是 2 TB,而資料檔案的大小上限則是 16 TB。 注意 為FILESTREAM 容器指定這個選項時沒有最大大小。 它會繼續成長,直到磁碟已滿。 FILEGROWTHgrowth_increment 指定檔案的自動成長遞增。 檔案的 FILEGROWTH 設定不能超過 MAXSIZE...
syntaxsql 複製 <order_clause> ::= { <column_name_in_clr_table_type_definition> [ ASC | DESC ] } [ , ...n ] <method_specifier> ::= assembly_name.class_name.method_name <clr_function_option> ::= { [ RETURNS NULL ON NULL INPUT | CALLED ON NULL INPUT ] | [ EXECUTE_AS_...
[ ; ] <column_definition> ::= column_name <data_type> [ FILESTREAM ] [ COLLATE collation_name ] [ SPARSE ] [ MASKED WITH ( FUNCTION = 'mask_function' ) ] [ [ CONSTRAINT constraint_name ] DEFAULT constant_expression ] [ IDENTITY [ ( seed , increment ) ] ] [ NOT FOR REPLICATION ...
[ ; ] <column_definition> ::= column_name <data_type> [ FILESTREAM ] [ COLLATE collation_name ] [ SPARSE ] [ MASKED WITH ( FUNCTION = 'mask_function' ) ] [ [ CONSTRAINT constraint_name ] DEFAULT constant_expression ] [ IDENTITY [ ( seed , increment ) ] ] [ NOT FOR REPLICATION ...
CreateTable returns an error when invalid column property settings cause SQL Server table-creation failure.Column properties in a DBCOLUMNDESC are interpreted as follows.Expand table Property IDDescription DBPROP_COL_AUTOINCREMENT R/W: Read/write Default: VARIANT_FALSE Description: Sets the identity...
Creates a new table in SQL Server 2008 R2. Transact-SQL Syntax Conventions Syntax CREATE TABLE [ database_name . [ schema_name ] . | schema_name . ] table_name ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ ] [ ,...n ] } ) [ ON { pa...
-> user_id int(11) NOT NULL AUTO_INCREMENT, -> user_name varchar(255) NOT NULL -> ); ERROR 1075 (42000): Incorrect table definition; there can be only one auto column and it must be defined as a key mysql> CREATE TABLE user( ...
this column will start with Id 1 and increment the Id by 1 for a new record inserted. The primary key constraint column represents unique data, so it is a good idea to define it on an Identity column. In a nutshell, the StudentId column is an auto-incremented Primary Key in this ...