Two ways to escape single quotes in oracle

Oracle is a powerful database management system that supports the use of single quotes in operations. But in some cases, you need to use single quotes in a string, which requires escaping the single quotes.

Oracle provides two methods to escape single quotes, using double single quotes and using backslashes.

Method 1: Use double single quotes

In Oracle, you can use two single quotes ('') to represent a single quote. For example, to insert the string "It's a sunny day" into the database, you need to use the following statement:

INSERT INTO table_name (column1, column2, column3) VALUES ('It''s a sunny day', value2 , value3);

In the above statement, two single quotes are used to represent one single quote.

Method 2: Use backslash

Backslash (\) can also be used to escape single quotes. In a string, just add a backslash before the single quote. For example, to insert the string "It's a sunny day" into the database, you need to use the following statement:

INSERT INTO table_name (column1, column2, column3) VALUES ('It\'s a sunny day', value2 , value3);

In the above statement, a backslash is added before the single quotation mark.

In addition to using escape characters when inserting data, they can also be used in query statements. For example, to find strings containing single quotes, you can use the following query statement:

SELECT * FROM table_name WHERE column1 LIKE '%''%';

In the above query statement, A single quote is escaped into two single quotes.

It should be noted that when using backslash to escape single quotes, the backslash itself also needs to be escaped. For example, to query for strings containing backslashes and single quotes, you can use the following query statement:

SELECT * FROM table_name WHERE column1 LIKE '%\''%';

above In the query statement, backslashes and single quotes are escaped.

In short, Oracle provides two methods to escape single quotes, using double single quotes and using backslashes. Developers need to choose a method that suits them based on the actual situation.

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