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QUOTE

Returns a string enclosed in single quotes.

Syntax

QUOTE ( str )

Arguments

str

A string.

Return Type

String

Examples

SELECT 'Do';

Output:

+----+
| Do |
+----+
| Do |
+----+

```sql SELECT QUOTE('Do'); ``` Output: ``` +-------------+ | QUOTE('Do') | +-------------+ | 'Do' | +-------------+ ```
```sql SELECT QUOTE("Don't"); ``` Output: ``` +----------------+ | QUOTE("Don't") | +----------------+ | 'Don\'t' | +----------------+ ``` In the following example, the result is the string `NULL` without enclosing quotes: ```sql SELECT QUOTE(NULL); ``` Output: ``` +-------------+ | QUOTE(NULL) | +-------------+ | NULL | +-------------+ ```

In the following example, QUOTE is used with a dynamic SQL statement to incorporate the value of a string variable.

SET sql_mode = 'PIPES_AS_CONCAT';
DROP DATABASE IF EXISTS memsql_docs_example;
CREATE DATABASE memsql_docs_example;
use memsql_docs_example;
CREATE TABLE t1(id INT, color TEXT);
CREATE TABLE t2(id INT, color TEXT);

INSERT INTO t1 VALUES (1, 'red'), (2, 'green'), (3, 'blue'), (4, 'green');
INSERT INTO t2 VALUES (1, 'orange'), (2, 'blue'), (3, 'purple'), (4,'orange');

DELIMITER //
CREATE PROCEDURE p(tbl TEXT, color TEXT) AS
DECLARE
  str TEXT = 'ECHO SELECT id, color FROM ' || tbl || ' WHERE color = ' ||
  	QUOTE(color) || ' ORDER BY id';
BEGIN
  EXECUTE IMMEDIATE str;
END
//
DELIMITER ;

CALL p('t2','orange');

Output:

+------+--------+
| id   | color  |
+------+--------+
|    1 | orange |
|    4 | orange |
+------+--------+