Neu: Oracle Ocp Jobs. Sofort bewerben & den besten Job sichern Apply for the best paid the oracle jobs on neuvoo. Full time and part time jobs near you This Oracle tutorial explains how to use JOINS (inner and outer) in Oracle with syntax, visual illustrations, and examples. Oracle JOINS are used to retrieve data from multiple tables. An Oracle JOIN is performed whenever two or more tables are joined in a SQL statement The JOIN operations, which are among the possible TableExpressions in a FROM clause, perform joins between two tables. (You can also perform a join between two tables using an explicit equality test in a WHERE clause, such as WHERE t1.col1 = t2.col2.) Syntax JOIN Operation. The JOIN operations are: INNER JOIN operation. Specifies a join between two tables with an explicit join clause. LEFT. Join Conditions . Most join queries contain at least one join condition, either in the FROM clause or in the WHERE clause. The join condition compares two columns, each from a different table. To execute a join, Oracle Database combines pairs of rows, each containing one row from each table, for which the join condition evaluates to TRUE.The columns in the join conditions need not also appear.
Oracle Joins. Join is a query that is used to combine rows from two or more tables, views, or materialized views. It retrieves data from multiple tables and creates a new table. Join Conditions. There may be at least one join condition either in the FROM clause or in the WHERE clause for joining two tables. It compares two columns from different tables and combines pair of rows, each. Oracle SQL Tutorial: Joins Verbinden von Daten mehrerer Tabellen. Sollen Informationen mehrerer Tabellen in einer Abfrage zusammengefasst werden, so benötigt man einen Join. Beispiele: Alle Artikel mit der Langbezeichnung der Einheit: select a.artikel_nr, e.bezeichnung Einheit from artikel a, einheit e where a.einheit_ref=e.einheit_kurz; Die Zeilen, in denen die Spalten EINHEIT_REF bzw.
Oracle SELF Join: A self join is a join in which a table is joined with itself. To join a table itself means that each row of the table is combined with itself and with every other row of the table. This tutorial explains SELF JOIN and uses in Oracle join_type gibt an, welche Art von Join ausgeführt wird: innerer Join, äußerer Join oder Cross Join. join_type specifies what kind of join is performed: an inner, outer, or cross join. join_condition definiert das Prädikat, das für jedes verknüpfte Zeilenpaar ausgewertet werden soll. join_condition defines the predicate to be evaluated for each pair of joined rows. Dies ist ein Beispiel. Join a fun and flexible workplace where you'll be inspired to do your best work. Here's what we have to say about life at Oracle. Watch our stories. A Place Where Everyone Can Grow. Whatever your background, experience, goals—we have opportunities for everyone. Jumpstart Your Future. Are you a student or recent graduate? We have a variety of programs that can help you build your skills. Oracle recommends that you use the FROM clause OUTER JOIN syntax rather than the Oracle join operator. Outer join queries that use the Oracle join operator (+) are subject to the following rules and restrictions, which do not apply to the FROM clause OUTER JOIN syntax: share | improve this answer | follow | edited Mar 31 '16 at 18:40. Mr. Llama. 18k 2 2 gold badges 45 45 silver badges 94 94. Inner Join in Oracle is a type of join where the first and second table is matched based on some joins predicate or condition by comparing each row of the first table with the rows of the second table to find the pair of rows that satisfies the join condition and all those pair of rows which satisfies the join condition (non-null values also included while comparing the rows) provided in the.
LEFT JOIN SQL-Query. Mittels eines JOINs können die beiden Tabellen über den Wert IDt1 mit einander verknüpft werden. Dabei sollen auch Datensätze aus tabelle1 berücksichtigt werden, die mit keinem Datensatz in tabelle2 verknüpft sind. Es wird daher ein LEFT JOIN verwendet. Die Abfrage ist dann noch auf die Datensätze zu beschränken, für die in der tabelle2 kein IDt1-Wert vorhanden. Inhalt Oracle SQL Oracle SQL Datentypen Definition von Integritätsbedingungen (constraints) Anlegen von Daten mit dem Insert-Befehl Ändern von Daten mit dem Update-Befehl Löschen von Daten mit dem delete-Befehl Aufbau der Oracle-SELECT-Befehle NULL-Werte Skalare SQL-Funktionen National Language Support (NLS) Verbindung von mehreren Tabellen (Join) Geschachtelte Abfragen (Subquery) Abbildung. Join Oracle Academy. Join us in our mission to advance computing education globally. Oracle Academy understands the value of educators as partners empowered to help students learn both in and outside the classroom. We offer secondary schools, technical/vocational schools, two- and four-year colleges, universities, and their educators free resources which include: Expert curriculum; Teaching. For a full description of Oracle's join methods, see the Oracle online documentation Concepts manual. The methods described below are those employed by the Oracle RDBMS to resolve SQLs with two or more tables specified in the FROM clause, or in some circumstances where a sub-query is specified. Oracle's Cost Based Optimiser will select a join method based on statistics and indexes available. Oracle performs a join whenever multiple tables appear in the query's FROM clause. The query's select list can select any columns from any of these tables. If any two of these tables have a column name in common, you must qualify all references to these columns throughout the query with table names to avoid ambiguity. Join Conditions . Most join queries contain WHERE clause conditions that.
FULL OUTER JOIN - ORACLE SQL » Syntax kurz erklärt. Das FULL OUTER JOIN-Schlüsselwort gibt alle Datensätze zurück, wenn eine Übereinstimmung entweder in der linken (Tabelle1) oder der rechten (Tabelle2) in Relation zum Filter vorliegt In Oracle Database 11g Release 1 (11.1), Oracle Database can batch multiple physical I/O requests and process them using a vector I/O instead of processing them one at a time. As part of the new implementation for nested loop joins, two NESTED LOOPS join row sources might appear in the execution plan where only one would have appeared in prior releases. In such cases, Oracle Database allocates. The WITH clause, or subquery factoring clause, is part of the SQL-99 standard and was added into the Oracle SQL syntax in Oracle 9.2. The WITH clause may be processed as an inline view or resolved as a temporary table. The advantage of the latter is that repeated references to the subquery may be more efficient as the data is easily retrieved from the temporary table, rather than being. This Oracle SQL tutorial focuses on self join in oracle, and provides syntax, explanations, examples. A self join in Oracle is a join of oracle table to itself. We can use the table multiple times .Each occurrence should have an alias name.Oracle database while executing the query join the table with itself and produce the result. General synta
Oracle decided to make the join first and then get rid of the duplicates, despite the fact that the DISTINCT clause is inside the inline view, not outside. However, semantically this is the same and Oracle knows it. Now, how will the IN predicate work? Will it be so smart to convert the query to the JOIN which completes in 2 seconds or it will be running the inner query over and over and over. An equi join is an inner join statement that uses an equivalence operation (i.e: colA = colB) to match rows from different tables.The converse of an equi join is a nonequi join operation.. Examples . Using SCOTT's table and Oracle join syntax: . SCOTT> SELECT ename, job, dept.deptno, dname 2 FROM emp, dept 3 WHERE emp.deptno = dept.deptno; ENAME JOB DEPTNO DNAME ----- ----- ----- ----- CLARK.
Join Operation Hints Wenn man dem Oracle Optimizer bei der Wahl der richtigen Strategie für die Join-Operation nicht traut und selber die beste Strategie erzwingen oder durch Tests ermitteln möchte, kann man die Wahl über Hints manipulieren. Die Definition von Hints geschieht folgendermaßen: SELECT /*+ Hint */ €¦ FROM €¦ Hint: Bemerkung: USE_NL(Tabelle1 [Tabelle2€¦]) Der Nested. This article introduced you to Oracle SQL outer joins, self-joins, scalar subqueries, multirow subqueries, and correlated subqueries. It also illustrated two types of outer join operators: the Oracle-specific operator and the ANSI outer join keywords. You've seen how self-joins can be used to obtain results from tables with recursive relationships. You've learned how subqueries help solve.
From 10g onwards Oracle has had a type of join called a Partitioned Outer Join, providing a convenient syntax which can be used to fill gaps in sparse data. The documentation describes the result of a partitioned outer join as a UNION of the outer joins of each of the groups in the logically partitioned table with the table on the other side of the join This Oracle tutorial explains how to use the Oracle UPDATE statement with syntax, examples, and practice exercises. The Oracle UPDATE statement is used to update existing records in a table in an Oracle database. There are 2 syntaxes for an update query in Oracle Seit Oracle 9i wurde die SQL-Syntax um die Oraculix Geschichten aus dem Alltag der Oracle-Datenbank-Entwicklung und -Administration Menü Zum Inhalt springen. Startseite; Downloads; ORA-600; Über mich; Subqueries sparen mit der WITH-Clause. 4 Antworten. Es gibt ja so das eine oder andere Feature in umfangreichen Softwareprodukten, das schon geraume Zeit auf dem Markt ist, in der Praxis. The bitmap join index in Oracle can give you substantial gains when properly applied to many of these circumstances. In a bitmap join index, the ROWIDs from one table are stored along with the indexed column from the joined table. The bitmap join index in Oracle is a lot like building a single index across two tables. You must build a primary key or unique constraint on one of the tables. When.
Term: JOIN Definition: The JOIN clause is used to combine records from two or more tables in a database. This is done by combining fields from the joined tables by using values common to each table. In other words, JOINS are used to find data from two or more tables based on the relationship between certain columns in these tables. Standard ANSII SQL specifies four types of JOINs Join zweier Tabellen (Oracle-SQL) Computer: Software & Programmierung. SQL & Datenbank - Programmierung. Rainer_Betz_984924. 30. Oktober 2019 um 22:38 #1. Hallo SQL-Profis, ich muß ein SQL-Statement für eine Oracle-DB erstellen, das zwei Tabellen miteinander verbindet. Das Ergebnis soll eine Liste von Namen sein, eingeschränkt auf eine bestimmte PersNr. Ist die PersNr in Tab2 nicht. Can you do UNION using JOIN keyword? Skip navigation. ANNOUNCEMENT: community.oracle.com is currently Read only due to planned upgrade until 28-Sep-2020 9:30 AM Pacific Time. Any changes made during Read only mode will be lost and will need to be re-entered when the application is back read/write. Oracle . Browse. Log in; Register; Go Directly To ; Home; News; People; Search; Search Cancel.
Join Operation: Each hint described in this section suggests a join operation for a table. USE_HASH: Causes Oracle to join each specified table with another row source with a hash join. /*+ USE_HASH([@queryblock] <tablespec> <tablespec>) */ conn uwclass/uwclass set autotrace traceonly explain SELECT DISTINCT s.srvr_id FROM servers s, serv_inst RLI is an Oracle [NYSE:ORCL] World Wide Gold Partner and designs, develops, implements, and supports enterprise cloud applications embedded with technologies like AI, machine learning, blockchain, IoT, and advanced analytics, and focuses heavily on cloud security and identity management. In 2018, Ronika founded RL Empowers, a nonprofit focused on training, educating, and certifying. UPDATE rows with values from a table JOIN in Oracle. Example use case: I have a database that contains a table of contacts (contact) and table of e-mail addresses (email), joined on contact.id = email.contact_id. I just found out that Example Conglomerate acquired Osric Publishing's Oracle consulting business, and so I need to update my contacts database so that all of the Oracle consultants. However, Oracle is able to take into account the fact that t_right.value is declared as NOT NULL, and, therefore, NOT IN is semantically equivalent to LEFT JOIN / IS NULL and NOT EXISTS. And Oracle uses exactly same plan for NOT IN, with an ANTI JOIN and a HASH JOIN to get (id, value) for t_left
Oracle joins hands with NIC, IEEE for virtual hackathon India's National Informatics Centre (NIC) and global technical professional organisation IEEE have joined hands with Cloud major Oracle to organise a virtual hackathon, Gov-TechThon 2020, to incubate new ideas, boost innovation and use technology in agriculture and allied sectors Outer-Join-Abfragen, die den Oracle-Join-Operator (+) verwenden, unterliegen den folgenden Regeln und Einschränkungen, die nicht für die FROM-Klausel OUTER JOIN-Syntax gelten: In einer Abfrage, die äußere Joins von mehr als zwei Tabellenpaaren ausführt, kann eine einzelne Tabelle die nullgenerierte Tabelle für nur eine andere Tabelle sein The index_join Hint. The index_join hint explicitly instructs the optimizer to use an index join as an access path. For the hint to have a positive effect, a sufficiently small number of indexes must exist that contain all the columns required to resolve the query. The and_equal Hint. The and_equal hint is used when a table has several non-unique single column indexes and you want multiple. Since 11g Oracle can prefetch nested loops, which shows up in the execution plan as the join operation being a child of a table access operation. This enables the database to first think about what it does to the ROWIDs it obtains from the nested loops. For instance, if the ROWIDs are all consecutive but not in the buffer cache, the table access operation can benefit from a multi-block read
For Oracle compatibility, Amazon Redshift supports the Oracle outer-join operator (+) in WHERE clause join conditions. This operator is intended for use only in defining outer-join conditions; don't try to use it in other contexts. Other uses of this operator are silently ignored in most cases. An outer join returns all of the rows that the equivalent inner join would return, plus non-matching. . The columns used in the join are implicit so the join code does not show which columns are expected, and a change in column names may change the results. In the SQL:2011 standard, natural joins are part of the optional F401, Extended joined table, package
SQL Oracle LEFT JOIN und SUBQUERY-Fehler: ORA-00905: missing keyword. Fragen, für Ihre Hilfe auf dieser Oracle-Abfrage. Es gibt mir die Fehlermeldung 2 ORA-00905: missing keyword. Es war in Ordnung arbeiten, bevor Hinzugefügt habe ich den LEFT JOIN-Anweisung. Offensichtlich wird es nicht liefern die Informationen, wie wir es brauchen, ohne die LEFT JOIN-Anweisung. Bitte geben Sie alle. Joining Oracle Product Management for this webcast series, you will get the latest updates on High Availability (HA), Scalability and Disaster Recovery (DR) best practices for Oracle Database. Why Oracle MAA? Oracle has built upon its enterprise experience with tens of thousands of customers across every region and industry in the world to develop an all-encompassing set of High Availability.
Oracle has its own unique syntax for joins that differs from the ANSI SQL standard. Learn about the differences between Oracle joins and ANSI SQL joins syntax Oracle Database 12c - Introduction To Sql: Working With Weiterlese oracle join beispiele - ganz ähnliche Themen: - orcale join (17.01.2010) oracle join beispiele - weitere Themen in diesem Umfeld..: ähnliche Inhalte beispiele + join + beispiele fixe einzelkosten + beispiele ionenbindung + cartoon beschreibung englisch beispiele + englische anekdoten beispiele + beispiele hebelgesetz + monopol oligopol beispiele + beispiele vollkostenrechnung + heterogene. JOIN is a syntax often used to combine and consolidate one or more tables. Tables are joined two at a time making a new table which contains all possible combinations of rows from the original two tables. As a developer you may have different approaches towards handling database queries. MySQL Database For Beginners elaborates on how to join tables. Here are some of the more frequently used.
Embark on an epic journey to the man known as the Oracle and uncover ancient mysteries What are Joins in Oracle. Joins. A Join is a predicate that attempts to combine 2 row sources. We only ever join two row sources together. At a given time only one Join Step is performed even though underlying row sources may have been accessed in parallel. Once two row sources have been combined the resultant row source can start to be joined to other row sources. Note that some join methods. INNER JOIN in Oracle example program code : The INNER Join is often called a SIMPLE Join as it is the simplest among all the kinds of joins and is also the most common one
Oracle Joins - What is a JOIN? Explain types of JOIN in oracle, What is a join, explain the types of joins?, Explain the types of joins, What is oracle Join In Oracle, SELF JOIN is used to combine rows with other rows in the same table. In other words table is joined with itself. This can be achive with the help of table alias to distinguish the left table from the right table of the same table in a single query. Oracle SELF JOIN example with examples on CRUD, insert statement, select statement, update statement, delete statement, use database. Oracle joins the Kubernetes movement. Oracle joined the Cloud Native Computing Foundation and released Kubernetes on Oracle Linux and its own Kubernetes cloud installer
11 Oct 2007 A Visual Explanation of SQL Joins. I thought Ligaya Turmelle's post on SQL joins was a great primer for novice developers. Since SQL joins appear to be set-based, the use of Venn diagrams to explain them seems, at first blush, to be a natural fit. However, like the commenters to her post, I found that the Venn diagrams didn't quite match the SQL join syntax reality in my testing hello oracle community, DMBS 11.1g: The method is working fine, but it is slow cause of the theta joins, my question is, is there a better way I cannot see. I will try your suggestion after launch and see if it works. forget to mention, we are using a SEO, so cannot use bitmap indexes Ikrischer . Like Show 0 Likes; Actions ; 6. Re: Theta Join. sql_coder Jul 9, 2010 11:41 AM (in response to. Institutions and teachers: Join Oracle Academy FREE. Oracle Academy provides you with a wide range of FREE teaching resources, including curriculum, classroom learning resources, software, cloud technology, practice environments, and much more. Join Now. Move to the cloud. Enjoy one-time setup and easy access to always-free Oracle Cloud Free Tier, Oracle Autonomous Database, Compute VM. I agree to these privacy terms for the Oracle Support Chat. I Do Not Agree I Agree.
ghd Oracle . Join the new ghd curl revolution. ORACLE TECHNOLOGIE. ORACLE TECHNOLOGIE. SALON EXKLUSIV . Das neue professionelle Tool von ghd für VIELSEITIGE LOCKEN. Die patentierte und bahnbrechende CURL-ZONE TECHNOLOGIE kombiniert das Wärmestyling mit einem Kühleffekt, um eine Vielzahl von Locken IN NUR EINEM STYLINGZUG zu kreieren. 1. Vier Keramik-Heizplatten erwärmen das Haar auf die. JOIN has higher precedence than the comma operator (,), so the join expression t1, t2 JOIN t3 is interpreted as (t1, (t2 JOIN t3)), not as ((t1, t2) JOIN t3). This affects statements that use an ON clause because that clause can refer only to columns in the operands of the join, and the precedence affects interpretation of what those operands are Auf dieser Seite findest du ein komplettes SQL Tutorial mit dem du SQL lernen kannst. Die einzelnen Kapitel bauen aufeinander auf und wenn du vorher noch nicht mit SQL gearbeitet hast, empfehle ich dir das Tutorial von oben nach unten durchzugehen Oracle (the database) does not support joins in the UPDATE statement. This is one of many tiny annoying fact about Oracle. Here are 2 different ways to overcome that limitation. This is one of many tiny annoying fact about Oracle Oracle doesn't have some of the handy short-hand functions that Microsoft has embedded into it's VB programming languages and into SQL Server but, of course, provides a similar way to return the same result. The key, is Oracle's SUBSTR() function! In Microsoft's SQL Server, and in VB, you have the following: MID(YourStringHere, StartFrom, NumCharsToGrab) MID(birthday,1,5
Einige interessante Beobachtungen zum Thema Outer Joins in traditioneller Syntax (aka Oracle-Join-Syntax) - also mit Verwendung des + Operators statt des OUTER JOIN Schlüsselworts (aka ANSI-Join-Syntax) hat Philipp Salvisberg vor kurzem in seinem Blog zusammengestellt. Demnach sind die relevanten inhaltlichen Einschränkungen, die den + Operator in älteren Releases betrafen, in 220.127.116.11. In Oracle, CROSS JOIN is used to fetch all rows from both the tables, where each row in the result set is the combination from both the tables. This is happens because it does not have the join conditions. Oracle CROSS JOIN example with examples on CRUD, insert statement, select statement, update statement, delete statement, use database, keys, joins etc
An inner join focuses on the commonality between two tables. When using an inner join, there must be at least some matching data between two (or more) tables that are being compared. An inner join searches tables for matching or overlapping data. Upon finding it, the inner join combines and returns the information into one new table As illustrated in the video, Oracle Database is a program designed to hold lots of information, or data. There are all kinds of different databases and they.
Oracle Developer Live—Oracle Database. Join us for technical sessions, hands-on labs, demos, panels and live Q&A with experts. Learn More. Database Cloud Services. Enterprise Oracle databases on Oracle Cloud. Oracle Autonomous Transaction Processing . Oracle Autonomous Data Warehouse . Oracle NoSQL Database . Oracle MySQL Cloud Service. Downloads . Oracle Database. MySQL Database. Oracle. oracle - inner - sql server natural join . Oracle Natural verbindet und zählt(1) (3) Weiß jemand warum in Oracle 11g, wenn Sie einen Count (1) mit mehr als einem natürlichen Join machen, einen kartesischen Join und wirft die Zählung weg Different join methods are possible in Oracle. Such a join method determines the mechanism (or the algorithm, if you will) how such row sources are joined. Merge join. Also called sort merge join. A merge join basically sorts all relevant rows in the first table by the join key , and also sorts the relevant rows in the second table by the join key, and then merges these sorted rows. Take an.
oracle sql リファレンス(逆引き) web: oracle.se-free.com: 外部結合（outer join、(+)） スポンサード リンク 外部結合は、(+) または、outer join句を使用します. where 表1.列a (+) = 表2.列a: 表2の列aにしか存在しないデータも検索される: where 表1.列a = 表2.列a(+) 表1の列aにしか存在しないデータも検索される: from. The Oracle CROSS Join query joins all the rows of one table with all the rows of another table and then displays the result. For instance, if the FIRST table has x rows and the Second Table has y rows than the resultant table will have x*y rows. Thus this query is often called as the cartesian products or the cartesian join. It is not mandatory to mention the CROSS JOIN keyword for this type. Outer Join with Oracle SQL; A traditional outer join. A normal join finds values of two tables that are in a relation to each other. In most cases, this relation is equality (=), but it can also be all sorts of operations that either return true or false. The important thing is that a normal join only returns rows of both tables of which the compared columns return true. Of course, a row. Occasionally a join using primary key columns in a query can be eliminated because of the data involved. In Oracle 12.2 and later, multi-column primary keys can be used to do this; however, there are cases where the join elimination is not complete . In this article, you'll see an example that illustrates these points Oracle outer joins have no concept of direction, whereas ANSI-compliant outer joins do. In the following example, we will outer join DEPT to EMP using the ANSI LEFT OUTER JOIN. The way to interpret this is to read the tables in the FROM clause from left to right. The left-hand table is the superset and the table on the right is the potentially deficient set. SQL> SELECT deptno, d.dname, d.loc.
NOIA was invited to and subsequently joined the Oracle for Startups program. Joining this program has proven to be the foundation of the strategic partnership being announced today. Following the inclusion of Oracle for the Startups program, NOIA had access to Oracle's engineering and administrative teams. Enjoying feature set guidance, product development strategies amongst several other. ORACLE SQL リファレンス(逆引き) Web: oracle.se-free.com: 内部結合(INNER JOIN) スポンサード リンク 内部結合は、比較演算子または、INNER JOIN句を使用します. FROM 表1 INNER JOIN 表2 ON （表1.列A ＝ 表2.列A） ANSI/ISO SQL99に対応した内部結合 INNER は省略可能: サンプル表「emp」データ. SQL> select * from emp; EMP DEP JOB. Oracle joins hands with NIC, IEEE for virtual hackathon IANS | October 16, 2020 06:52 AM NEW DELHI: India's National Informatics Centre (NIC) and global technical professional organisation IEEE have joined hands with Cloud major Oracle to organise a virtual hackathon, Gov-TechThon 2020, to incubate new ideas, boost innovation and use technology in agriculture and allied sectors
Oracle joins hands with NIC, IEEE for virtual hackathon. India's National Informatics Centre (NIC) and global technical professional organisation IEEE have joined hands with Cloud major Oracle to. Software giant Oracle is in discussions with ByteDance to acquire social-video app TikTok, according to multiple reports. Oracle Reportedly Joins Hunt to Buy TikTok, Challenging Microsoft Bid. Intel, AMD, Nvidia, Ampere Join Oracle Cloud Dream Team. Tobias Mann | Editor September 22, 2020 12:36 pm MT Share this article: Email Twitter LinkedIn Facebook Reddit Hacker News. Oracle unveiled. How to join Oracle and MemSQL Learn how to join Oracle with MemSQL for integrated analysis. WITH DATA VIRTUALITY PIPES Replicate Oracle and MemSQL data into one target storage and analyze it with your BI Tool. Learn How About Oracle Oracle develops enterprise software products, cloud engineered systems and database Management systems. Oracle's tools for database development include Customer. Oracle Cloud Infrastructure offers higher performance, security, and cost savings. LinkedIn. Oracle in Worldwide Jobs Jobs People Learning Dismiss Dismiss. Dismiss. Dismiss. Dismiss. Join now Sign. How to join PostgreSQL and Oracle Learn how to join PostgreSQL with Oracle for integrated analysis. WITH DATA VIRTUALITY PIPES Replicate PostgreSQL and Oracle data into one target storage and analyze it with your BI Tool. Learn How About PostgreSQL PostgreSQL is a powerful open-source object-relational database system. By supporting UNIX, Linux, BSD, AIX, SGI IRIX, HP-UX, Solaris, Mac OS X.