django field types

8000Varchar: Variable Length non-Unicode bytes data, maximum length: 8000Text: Variable Length non-Unicode bytes data. The maximum length is 2 ^ 31-1 (2G)Nchar: bytes data with a fixed length of Unicode. The maximum length is 8000.Nvarchar: variable-length Unicode bytes. The maximum length is 8000.Ntext: String-type data with Extended Unicode length. The maximum length is 2 ^ 31-1 (2G)Binary: binary data with a fixed length. The maximum length is 8000.Varbinary: variable-length binary data with

with a maximum length of 8000Varchar: Variable Length non-Unicode bytes data, maximum length: 8000Text: Variable Length non-Unicode bytes data. The maximum length is 2 ^ 31-1 (2g) Nchar: bytes data with a fixed length of Unicode. The maximum length is 8000.Nvarchar: variable-length Unicode bytes. The maximum length is 8000.Ntext: String-type data with Extended Unicode length. The maximum length is 2 ^ 31-1 (2g) Binary: binary data with a fixed length. The maximum length is 8000.Varbinary: va

: Integer data from 0 to 255.Bit:1 or 0 of integer data.(4) decimal and numericBoth of these data types are equivalent. have two parameters: P (Precision) and S (decimal digits). p Specifies the maximum number of decimal digits that can be stored to the left and right of the decimal point, and P must be a value from 1 to 38. s specifies the maximum number of decimal digits that can be stored to the right of the decimal point, s must be a value from 0

Label:--Get the stored procedure creation statementSelect O.XTYPE,O.NAME,CM.TextFromsyscomments cmInnerJoin sysobjects oOn O.id=Cm.idwhere xtype=‘P‘Orderby O.XTYPE,O.NAME,CM.Text--Get View Path Creation statementSelect O.XTYPE,O.NAME,CM.TextFromsyscomments cmInnerJoin sysobjects oOn O.id=Cm.idwhere xtype=‘V‘Orderby O.XTYPE,O.NAME,CM.Text--Query all table names, field names, types, lengthsSelect O.name, C.na

There is a field that can store integers and decimals, such as 43 and 43 thousand yuan. how can I set a field that can store integers and decimals, such as 43 and 43 thousand yuan, can be saved, how should I set Reply content: There is a field that can store integers and decimal places, such as 43 and 43 thousand yuan, which can be saved. how should I set it?

Get all tables of the database and their field names, types, lengths Http://hi.baidu.com/%B7%E7%D3%F8/blog/item/db6d0835b7d6af305bb5f5c5.html ' Use instructions:' 1. Configure database type, see Issqldatabase' 2. Configure database name, account number, password and other parameter values, see conn.connectionstring'Const issqldatabase = 1 ' database type 1 is SQL database, 0 is an Access databaseDim Conn,r

Label:Today company because of business needs, repair to modify a field data type has number (5), changed to number (5,2) typeIf you don't have the data, just use the following statement ALTER TABLE Tb_test modify Permile number (5,2); But with the data, you can't use the method above, ALTER TABLE Tb_test add permile_temp number (5,2) Update tb_test set permile_temp=permile; ALTER TABLE drop column permile; ALTER TABLE Test Rename column permile_temp

Risks of incorrect selection of Oracle Database Design field types, oracle Fields A hidden danger of inaccurate data types. The following constructs a table storage date field, one storage varchar2, and one storage date for a test. I have also written two blogs before: 1. Problems Caused by inconsistent

Tags: define class types.h name data param ADT field data migration namesCustom typeAccording to the official documentation, create a new Tinyinttype class, integrate the type, and rewrite,, and getName getSqlDeclaration convertToPHPValue getBindingType so on.tinyinttype.php Complete code:namespaceDb\types; UseDoctrine\Dbal\parametertype; UseDoctrine\Dbal\platforms\abstractplatform; UseDoctrine\Dbal\

-- SQL: obtain all the field types and precision scripts of the specified data table, and directly execute the following script.Select a. Name,Case A. PrecisionWhen 0 then Case A. is_ansi_paddedWhen 1 thenConvert (nvarchar (15), B. Name + '(' + convert (nvarchar (10), a. max_length) + ')')When 0 thenB. NameEndElse Case A. ScaleWhen 0 thenB. NameElseB. Name + '(' + convert (nvarchar (10), a. Precision) + '

Label:Are exact data types, the first two can define their own lengths and decimal digits, and Money's definition is equivalent to Numric (19,4) Numeric (10,2)Indicates that the maximum can be 10 digits, but the 10 digits have 2 digits that are decimals such as:12345678.12 NumericFunctionally equivalent to decimal. The money type of SQL Server is actually a decimal type decimal. Number of bytes Length (Before the decimal po

ASP create tables, copy table field types AppendixCreate a table in an existing databaseSql= "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" server. MapPath ("Book.mdb")Conn.Open SQLConn.execute ("CREATE TABLE" BBB (ID autoincrement), p_id text (+), EE money,ff datetime default date (), GG guid,hh Single default 50,ii double,jj smallint,kk long,ll image,mm memo,oo yesno not null,pp tinyint,qq numeric (18,4)

TINYINT, SMALLINT, MEDIUMINT, INT, INTEGER, BIGINT; text, longtext, mediumtext, ENUM, SET, and other field types, tinyintmediumint Http://www.path8.net/tn/archives/951 MySQL supports a large number of column types, which can be divided into three types: Number type, date and time type, and string (character) type. This

CRM field type If the change, such as text type to find type, to create a new name is not the same as the original, you must not delete the previous field and then build the same, so if the official system will cause the import, execute SQL failure, remember. You can add 2 to the field name, or other names, without discarding the comment.1. Also query whether JS

MySQL has the following field types: VarcharTinyintTextDateSmallintMediumintIntBigintFloatDoubleDecimalDatetimeTimestampTimeYearCharTinyblobTinytextBlobMediumblobMediumtextLongblobLongtextEnumSetBoolBinaryVarbinary 1. Text Type Char Usage: Char (length) The char type can contain a maximum of 255 characters. When the length of the string inserted into the table is smaller than the length, spaces are used to

--Get Stored Procedure creation statement Select O.xtype,o.name,cm.text from syscomments cm inner join sysobjects o on o.id=cm.id where xtype = ' P ' order By o.xtype,o.name,cm.text--get view path creation statement Select O.xtype,o.name,cm.text from syscomments cm inner join sysobjects o on o.id=cm . ID where xtype = ' V ' ORDER by o.xtype,o.name,cm.text--queries all table names, field names, types, length

--get the stored procedure creation statementSelecto.xtype,o.name,cm.text fromsyscomments cmInner Joinsysobjects o onO.id=cm.idwhereXtype='P'Order byo.xtype,o.name,cm.text --Get view path creation statementSelecto.xtype,o.name,cm.text fromsyscomments cmInner Joinsysobjects o onO.id=cm.idwhereXtype='v'Order byo.xtype,o.name,cm.text --query all table names, field names, types, lengthsSelectO.name, C.n

For fuzzy query of the mysqlset field type, there are 0.4 million testing data tables: flag nbsp; set ('R', nbsp; 'L', nbsp; 'C ', nbsp; 'P') nbsp; SELECT nbsp;. nbsp; * nbsp;, nbsp; B. typedirFROM nbsp; mzrui_arch about fuzzy query of mysql set field types There are 0.4 million test data tables Flag set ('R', 'L', 'C', 'P ') SELECT a. *, B. typedir FR

Label:--Query database allSELECT (case if A.colorder=1 then d.name else null end) Table name,A.colorder field ordinal, a.name field name,IsNull (G.[value], ") as [description]From Syscolumns ALeft join Systypes B on A.xtype=b.xusertypeINNER JOIN sysobjects D on a.id=d.id and d.xtype= ' U ' and d.nameLeft join syscomments E on a.cdefault=e.idLeft joins Sys.extended_properties G on a.id=g.major_id and a.colid

display text and values, respectivelyIn addition, we can use the following method to get the text and value:var sval = Xrm.Page.getAttribute ("new_optionset"). GetText ();var sval = Xrm.Page.getAttribute ("new_optionset"). GetValue (); Assign value function Setosvalue (Osname, Oslabel){var options = Xrm.Page.getAttribute (osname). GetOptions (); for (i = 0; i length; i++){if (Options[i].text = = Oslabel)Xrm.Page.getAttribute (Osname). SetValue (Options[i].value);}}3. Datetime