![]() The underscore at the beginning represents that there can be any character at the start of a string. Let’s illustrate the above syntax stepwise: To do so, we will use both wildcards combinedly with the aid of the LIKE operator as shown in the below syntax: SELECT FROM tab_name Now, we have to consider two conditions simultaneously, i.e., X should be the second character in the string, and the string must end with Y. Syntax 5: How to Find a Value at a Specific Position and That Ends With a Specific Character? The underscore “_” at the start shows that at the beginning, there must be only a single character and the second character must be “Z”. The underscore “_” wildcard is used to find a value at a specific position: SELECT FROM tab_name Syntax 4: How to Find a Value at a Specific Position Using Like Operator/Clause? Here, “%5” shows that there can be anything at the start of the string. ![]() Syntax 3: How to Use Like Operator to Find a Value That Ends With a Specific Character/Number?įollow the below-given syntax for the LIKE operator to find a value that ends with a specific value, character, or number: SELECT FROM tab_name However, the string must contain a substring “XYZ''. In the above syntax, the percent % wildcard at the start and end represents that there can be zero, one, or more characters/numbers at the beginning or at the end of the string. The following syntax of the LIKE operator is used to search a substring at any position let’s say XYZ is the targeted substring: SELECT FROM tab_name Syntax 2: How to Use Like Operator/Clause to Find a Substring? Note: Here, XYZ is just an exemplary value. The percent “%” wildcard at the end represents that there can be zero or more characters after the specified value i.e. The above syntax illustrates that the string must start with XYZ. SELECT FROM tab_nameįollowing is a step-by-step explanation of the above syntax: The below syntax will be used to search for a value that starts with “XYZ”. Syntax 1: How to Find a Value That Starts With “XYZ” Using Like Operator/Clause? There are several syntaxes of the Postgres LIKE operator you can use any of the below-mentioned syntaxes depending on the situation: To avail maximum functionalities, both these operators/clauses can be used combinedly. While the wildcard underscore “_” is used to specify a single character/number. The wildcard percent “%” in Postgres is used to specify zero, one, or more than one character/number. ![]() ![]() How to Use the LIKE Operator/Clause in PostgreSQL? This write-up will discuss both wildcards(% and _) with the help of examples. If you didn’t specify a wildcard in the LIKE operator, then it will act as an equal operator. PostgreSQL provides two wildcards, percent (%) and underscore(_), that are used with the aid of the LIKE operator. The LIKE operator returns true(Boolean value) if a perfect match is found in the targeted text. PostgreSQL provides a LIKE operator that performs pattern/text matching using wildcards. ![]()
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