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What is the wildcard in Oracle SQL?

What is the wildcard in Oracle SQL?

The percent wildcard specifies that any characters can appear in multiple positions represented by the wildcard. The underscore wildcard specifies a single position in which any character can occur.

What are the special characters in Oracle?

4 Special Characters in Oracle Text Queries

  • Grouping Characters.
  • Escape Characters.
  • Reserved Words and Characters.

What is a wildcard in database?

A wildcard is a character that substitutes for another character or string of characters when searching a database. Wildcards can be used in genealogy and other types of databases but can also be used when using internet search engines such as Google.

What is wildcard example?

Replace one or more characters in the criteria with a wildcard character….Examples of wildcard character pattern matching in expressions.

C haracter(s) Use to match
? or _ (underscore) Any single character
* or % Zero or more characters
# Any single digit (0 — 9)
[charlist] Any single character in charlist

What are wildcards in SQL?

SQL Wildcards A wildcard character is used to substitute one or more characters in a string. Wildcard characters are used with the LIKE operator. The LIKE operator is used in a WHERE clause to search for a specified pattern in a column.

How do I use wildcards in Oracle?


  1. %: It represents a sequence of any number of characters including zero.
  2. _: It represents any single character but only at the specified position.
  3. WILDCARDS with LIKE operator must be used in WHERE clause.
  4. WILDCARDS with LIKE operator can be used in SELECT statement.

Is * a wildcard in SQL?

The percent sign represents zero, one or multiple characters. The underscore represents a single number or a character….SQL – Wildcard Operators.

Sr.No. Wildcard & Description
1 The percent sign (%) Matches one or more characters. Note − MS Access uses the asterisk (*) wildcard character instead of the percent sign (%) wildcard character.

Is in SQL Oracle?

The IN operator returns true if the value of expression equals to any value in the list of values or the result set returned by the subquery. Otherwise, it returns false. The NOT operator negates the result of the IN operator.

How can I use wildcard characters in replace?

and then click Advanced Find.

  • Select the Use wildcards check box
  • Do one of the following:
  • What is the wildcard character in SQL queries?

    SQL Wildcard: Main Tips Wildcards have the same purpose as Regular Expressions. A wildcard character is an alternative character replacing certain other character (s) in a string. SQL wildcards are useful when you want to perform a faster search for data in a database. MS Access uses a question mark (?) instead of an underscore ( _ ).

    How to do wildcard search?


  • Click More Options to expand the dialog.
  • Select the Regular expressions check box.
  • type the search term and the wildcard (s) that you want to use in your search.
  • Click Find Next or Find All.
  • Can I use wildcard character?

    VLOOKUP looks up the exact value specified in a list and returns the corresponding value in a table.

  • FIND AND REPLACE. Using wildcard characters in Excel find and replace is useful to correct data and make the data set consistent throughout the database.