![]() So we are basically telling SQL that we would like to get some records “like” what matches our wildcard. The percent sign after the “c” means we don’t care what cames after the first letter, as long as the first letter is a C. We are using a wildcard to search only for records where the “first_name” begins with the letter C. And the like operator lets us get specific. In this case, we’re working with the “first_name” column of the table. ![]() The important where clause lets SQL know which column of the table we’re interested in. This table contains the names and information about the people who have signed up to receive a newsletter. In this case, we’re working with our “respondents” table again. Next, we have the from clause that tells SQL which table in the database we’re interested in. This will let SQL know we want to select (return) some records. You will recognize the select statement that starts this line. The below example shows that like query using percentage wildcard operator.Let’s break down the above statement. Like query using percentage wildcard operator. The example below shows that, like a query using the limit, we have used limit as 3 and percentage operator.Ĭode: select * from student where stud_name like '%ABC%' limit 3 The student table contains the below data. We have used the student table to describe the example of a like query in PostgreSQL. The query matches the pattern in the second example because we used the uppercase string name “ABC”.īelow is an example of a like query in PostgreSQL:.In the first example, we have used a lowercase letter to match the string using a like query same time, zero rows return because no match is available with the lowercase string name as “abc”.Select * from student where stud_name like '%ABC%' We need to specify the case sensitive string while using like query in PostgreSQL.īelow is the example to show that we need to specify case sensitive strings while using like query in PostgreSQL:Ĭode: select * from student where stud_name like '%abc%' We can also use limit condition with a like query in PostgreSQL.We have also used like query when we have only remembered the half sting using half string, we can find the whole string using like query in PostgreSQL.If the student table contains the column as a student name and we want to find the student name, starting and ending with a specific letter, we have used the same time as the query in PostgreSQL. Like query is used when we cannot remember the string’s exact name.If we have not used a like operator with an underscore and percentage sign, it will work as an equal operator in PostgreSQL.We can use underscore signs with multiple forms in like query, i.e., ‘_xx’, ‘_xx_’, and ‘xx_’.Let us turn our attention to LIKE: The Following query selects a substring which exists in the data only once. We can combine numbers and characters with each other. Running simple LIKE queries in PostgreSQL. The underscore (_) sign represents one number or character.We can use percentage signs with multiple forms like query, i.e., ‘%xx’, ‘%xx%’, and ‘xx%’.Which we have used with a percentage in a different form that we have retrieving output.Below is the working of like query in PostgreSQL: We have to use a query to select, delete, update, and insert operations using where clauses and wildcard operators. ![]() The percentage (%) sign represents one, zero, or multiple no of characters. Like: We can use the like query in PostgreSQL to retrieve the data from the table while matching the text pattern using the wildcard operator.There are two types of wildcard operators used with like query in PostgreSQL. We have to use a query to select, delete, update, and insert operations using where clauses and wildcard operators. Like: We can use the like query in PostgreSQL to retrieve the data from the table while matching the text pattern using the wildcard operator.īelow is the working of like query in PostgreSQL:.Where clause is very important while using like query in PostgreSQL. Where: Where clause is used to specify a column from which we use like query condition in PostgreSQL.Table name: Table name specifies that we have to retrieve data using like query in PostgreSQL. The syntax of PostgreSQL LIKE operator is as follows: value LIKE pattern Code language: SQL (Structured Query Language) (sql) The expression returns true if the value matches the pattern.We can use all or specific columns from the table. Column name: This is the column name from which we have used like query to match the text value from the pattern.We have to select all columns or specific columns. Select: Select is used to select a column from the table which we have used like condition to fetch the data.Or SELECT column_name FROM table_name WHERE column_name LIKE '_XX_'īelow is the parameter description syntax of a like query in PostgreSQL: SELECT column_name FROM table_name WHERE column_name LIKE '_XX'
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