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Tag: Oracle

Oracle 10g XE on Ubuntu/Debian Linux

September 3, 2014 Koen Leave a comment

Some time ago, Oracle removed the download links to Oracle 10g Express Edition (XE). If you need to do a…

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Posted in: Database, Oracle, UNIX/Linux Filed under: Oracle, UNIX/Linux

Concatenate Strings from a Column Into a Single Row

December 20, 2011 Koen Leave a comment

Sometimes there is a need to concatenate strings from a column into a single row. Some databases already provide a…

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Posted in: Database, DB2, Oracle, SQL Filed under: Database, DB2, Oracle, SQL

Count Word Occurrences in Oracle String

November 17, 2011 Koen Leave a comment

As of Oracle 11 you can use the REGEXP_COUNT function to count the number of occurrences of a word or…

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Posted in: Database, Oracle, Regular Expression, SQL Filed under: Database, Oracle, Regular Expression, SQL

SQL Developer with a DB2 Database

September 6, 2011 Koen Leave a comment

Originally called Raptor – SQL Developer has become quite a decent SQL Development tool over the years. The nice thing…

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Posted in: Database, DB2, Oracle, SQL Filed under: Database, DB2, Oracle, SQL

Catching errors in Oracle

June 16, 2011 Koen Leave a comment

Sometimes there is a need to find out exactly which Oracle errors are occurring in your code, because your application…

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Posted in: Database, Oracle, SQL Filed under: Database, Errors, Oracle, SQL

Order of predicates in WHERE clause

June 10, 2011 Koen Leave a comment

It is often assumed that the order of the predicates in the WHERE clause of an Oracle SELECT statement does…

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Posted in: Database, Oracle, SQL Filed under: Database, Oracle, SQL

Regular Expressions in Oracle

Koen Leave a comment

Regular Expressions (RE) are a powerful feature in Oracle. I have found them to be most useful for situations where…

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Posted in: Database, Oracle, Regular Expression, SQL Filed under: Database, Oracle, Regular Expression, SQL

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