By Jonathan Gennick
Oracle general Expressions Pocket Reference is a component instructional and half quick-reference. it is appropriate in case you have by no means used usual expressions earlier than, in addition to those that have event with Perl and different languages aiding ordinary expressions. The publication describes Oracle Database 10G's aid for normal expressions, together with globalization aid and modifications among Perl's syntax and the POSIX syntax supported by way of Oracle 10G. It additionally offers a finished reference, together with examples, to all supported typical expression operators, features, and mistake messages.
Read or Download Oracle Regular Expressions Pocket Reference PDF
Similar oracle books
Книга OCP Oracle Database 11g: New positive aspects for directors examination consultant OCP Oracle Database 11g: New good points for directors examination advisor Книги Oracle Автор: Sam Alapati Год издания: 2008 Формат: pdf Издат. :The McGraw-Hill businesses, Inc. Страниц: 554 Размер: three ISBN: 0-07-164372-9 Язык: Русский0 (голосов: zero) Оценка:-
An important part of safe coding within the Java programming language is a well-documented and enforceable coding typical. Coding criteria inspire programmers to stick with a uniform algorithm decided through the necessities of the undertaking and association, instead of through the programmer’s familiarity or choice.
"Protect your databases from undefined, software program, and operator mess ups utilizing the designated details during this Oracle Press advisor. Oracle RMAN 11g Backup and restoration explains tips on how to configure databases, generate actual files, and perform method restores. paintings from the command line or Oracle company supervisor, automate the backup approach, practice Oracle Flashback recoveries, and combine cloud computing know-how.
Accelerate the execution of significant database queries through making stable offerings approximately which indexes to create. decide on right index kinds for various eventualities. keep away from indexing pitfalls which may even have indexes hurting functionality instead of assisting. retain indexes on the way to offer constant and predictable question reaction over the life of an program.
- DBAs Guide to Databases Under Linux
- Oracle Data Guard 11g Handbook (Osborne ORACLE Press Series)
- Oracle DBA on UNIX and Linux (Kaleidoscope)
- Oracle ADF Real World Developer's Guide
Extra resources for Oracle Regular Expressions Pocket Reference
3 The space and punctuation following the first occurrence, which we also keep. The second occurrence of the doubled word, and whatever space and punctuation that follows it, are arbitrarily discarded. While the pattern shown in this section is an interesting way to rid yourself of doubled words, it may or may not yield correct sentences. 6 for a more comprehensive explanation of backreferences. REGEXP_SUBSTR Extracts text matching a pattern 39 40 REGEXP_SUBSTR scans a string for text matching a regular expression, and then returns that text as its result.
ORA-12726: unmatched bracket in regular expression You have mismatched square brackets in your expression. Apply the advice we give for ORA-12725, but this time look at your use of square brackets. Also, while an expression such as '[a' will cause this error, an expression such as 'a]' will not, because a closing (right) bracket is treated as a regular character unless it is preceded by an opening (left) bracket. ORA-12727: invalid back reference in regular expression You wrote a backreference to a subexpression that does not exist, or that does not yet exist.
You may specify any, all, or none of the following options, in any order: 'i' Specifies case-insensitive matching. 34 35 'c' Specifies case-sensitive matching. The NLS_SORT parameter setting determines whether case-sensitive or -insensitive matching is done by default. ) to match the newline character. Normally, that is not the case. 'm' Causes the caret (^) and dollar sign ($) to match the beginning and ending, respectively, of lines within the source string. Normally, the caret (^) and dollar sign ($) match only the very beginning and very ending of the source string, regardless of any newline characters within the string.
Oracle Regular Expressions Pocket Reference by Jonathan Gennick