(' + ISNULL (mid.equality_columns, '') + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN ',' ELSE '' END + ISNULL (mid.inequality_columns, '') + ')' + ISNULL (' INCLUDE (' + mid.included_columns + ')', '') AS create_index_...
SET optionsRequired valueDefault server valueDefault OLE DB and ODBC valueDefault DB-Library value ANSI_NULLS ON ON ON OFF ANSI_PADDING ON ON ON OFF ANSI_WARNINGS 1 ON ON ON OFF ARITHABORT ON ON OFF OFF CONCAT_NULL_YIELDS_NULL ON ON ON OFF NUMERIC_ROUNDABORT OFF OFF OFF OFF QUOTED_IDENT...
of return value procedure pointer supported by binary operations supported by unary operations supported in expressions time (1), (2), (3) timestamp UCS-2 database data null values variable-length fields date, user *DATE, *DAY, *MONTH, *YEAR UDATE, UDAY, UMONTH, UYEA...
Oracle Database does not index table rows in which all key columns arenull, except for bitmap indexes or when the cluster key column value is null. Types of Indexes Oracle Database provides several indexing schemes, which provide complementary performance functionality. ...
Returns the value of the named property. If the object is in the Creating state and the property has not yet been set the defaultValue is returned. If the object exists the defaultValue is ignored and the actual value is returned. (Inherited from SqlSmoObject) GetPropValueOptionalAllowNull...
Defines the constants indicating the navigation type of the favorite Important: this value is not passed to the function IFavoritesProvider.addFavorite(com.sap.security.api.IUser, java.lang.String, java.lang.String, java.lang.String, boolean), it is decided by the provider IFavorite.Type() -...
错误日志告警null is not an object (evaluating \'t.indexOf\') u@https://lib/WAServiceMainContext.js:1:557713 as@https://lib/WAServiceMainContext.js:1:1150215 set@https://lib/WAServiceMainContext.js:1:1150638 src@https://lib/WAServiceMainContext.js:1:1284850 @https://usr//app-service.js:...
ISNULL(expr) IFNULL(exper1,exper2) 定义:判断exper1是否为空,是则用exper2代替 代码语言:javascript 复制 IFNULL(exper1,exper2) NULLIF(exper1,exper2) 定义:如果expr1= expr2 成立,那么返回值为NULL,否则返回值为 expr1。 代码语言:javascript ...
INCLUDE NULL KEYSEXCLUDE NULL KEYS● Notes: 1In a federated system,table-namemust identify a table in the federated database. It cannot identify a data source table. 2Ifnicknameis specified, the CREATE INDEX statement creates an index specification. In this case, INCLUDE,xml-index-specification...
Description: I created a composite index where one of the parts is the expression "column is not null". e.g. INDEX(column1, ("column2 is not null")) analyze SELECT column1, column2 from table where column1 = '1' and column2 is not null. The analyze shows that the second part ...