oracle regular expression to check number

Oracle's formal expression is implemented in the form of various SQL functions and a WHERE clause operator. If you are unfamiliar with regular expressions, this article will give you an idea of this new, incredibly powerful, yet seemingly mysterious

[Switch] oracle Regular Expression and oracle Regular Expression1. Brief Introduction to oracle (regular expression) At present, regular expressions have been widely used in many software applications, including * nix (Linux, Unix, etc.), HP and

A new feature of OracleDatabase10g greatly improves your ability to search and process character data. This feature is a regular expression used to describe the text mode. It has appeared in many programming languages and a large number of UNIX

The regular expression attribute in Oracle Database 10g is a powerful tool for working with text data A new feature of Oracle database 10g greatly improves your ability to search for and process character data. This feature is a formal expression,

What is a regular expression? A regular expression is composed of one or more character characters and/or metacharacters. In the simplest format, a regular expression only consists of characters, such as a regular expression cat. It is read as C

Oracle Regular ExpressionsIn practical applications, you want to exclude field values with Chinese: Select H.froomnumber from T_broker_house h where Regexp_like (Froomnumber, ' ^ ([a-z0-9a-z]|-) *$ ')The string ' ^198[0-9]$ ' can match ' 1980-198

UltraeditIs a powerful text editor that can edit text, Hex, and ASCII code. It can replace notepad, built-in English word check, C ++, and VB syntax highlighted, you can edit multiple files at the same time, and the speed of enabling a large file is

The following examples illustrate how to use regular expressions to solve common problems in work.1.REGEXP_SUBSTRThe REGEXP_SUBSTR function uses a regular expression to specify the start and end points of the returned string, and returns the same

Oracle Study---oracle Regular expressionCase Requirements:To set up a check constraint, require that the field input must be "00[number][number][a-z":The following constraints (constraint) are established through regular expressions:17:20:13 [email

Oracle 10g Regular Expression REGEXP_LIKE usageThere are four functions that support regular expressions in ORACLE:1. REGEXP_LIKE: similar to LIKE2. REGEXP_INSTR: similar to INSTR3, REGEXP_SUBSTR: similar to SUBSTR4. REGEXP_REPLACE: similar to