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  2. Hierarchical and recursive queries in SQL - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_and_recursive...

    A common table expression, or CTE, (in SQL) is a temporary named result set, derived from a simple query and defined within the execution scope of a SELECT, INSERT, UPDATE, or DELETE statement. CTEs can be thought of as alternatives to derived tables ( subquery ), views , and inline user-defined functions.

  3. Open Message Queue - Wikipedia

    en.wikipedia.org/wiki/Open_Message_Queue

    Open Message Queue (OpenMQ or Open MQ) is an open-source [2] message-oriented middleware project by Oracle (formerly Sun Microsystems) that implements the Java Message Service 2.0 API (JMS). It is the default JMS provider integrated into GlassFish .

  4. Oracle Data Guard - Wikipedia

    en.wikipedia.org/wiki/Oracle_Data_Guard

    Unfortunately there are a number of unsupported objects (e.g. tables or sequences owned by SYS, tables that use table compression, tables that underlie a materialized view or Global temporary tables (GTTs)) and unsupported data types (i.e.: datatypes BFILE, ROWID, and UROWID, user-defined TYPEs, multimedia data types like Oracle Spatial ...

  5. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    A derived table is the use of referencing an SQL subquery in a FROM clause. Essentially, the derived table is a subquery that can be selected from or joined to. The derived table functionality allows the user to reference the subquery as a table. The derived table is sometimes referred to as an inline view or a subselect.

  6. DUAL table - Wikipedia

    en.wikipedia.org/wiki/DUAL_table

    SQLite: A VIEW named "dual" that works the same as the Oracle "dual" table can be created as follows: CREATE VIEW dual AS SELECT 'x' AS dummy; SAP HANA has a table called DUMMY that works the same as the Oracle "dual" table. Teradata database does not require a dummy table. Queries like 'select 1 + 1' can be run without a "from" clause/table name.

  7. Temporary Error 2 in AOL Mail

    help.aol.com/articles/temporary-error-2-in-aol-mail

    Accessing AOL Mail account simultaneously from 2 different browsers. Accessing AOL Mail on multiple devices simultaneously from more than one place. Possible fixes

  8. Temporary Error 22 - AOL Help

    help.aol.com/articles/temporary-error-22

    Accessing your AOL Mail account simultaneously from 2 different browsers; Accessing your AOL Mail account on multiple devices simultaneously from more than one place; Possible fixes. Restart your Web browser; Clear your Web browser's cache; Make sure you're using a supported Web browser and operating system (OS)

  9. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    214 Help message (A response to the HELP command) 220 <domain> Service ready 221 <domain> Service closing transmission channel 221 2.0.0 Goodbye [1] 235 2.7.0 Authentication succeeded [3] 240 QUIT 250 Requested mail action okay, completed 251 User not local; will forward 252 Cannot verify the user, but it will try to deliver the message anyway