mysql和postgresql转义字符探究

总结

mysql依靠反斜杠\转义, postgresql 依靠单引号转义

mysql 客户端

mysql> create table usr (name varchar(), age integer);
Query OK,  rows affected (0.05 sec)

mysql> insert into usr values ('kate', );
Query OK,  row affected (0.01 sec)

mysql> insert into usr values ('kate\'', );
Query OK,  row affected (0.01 sec)

mysql> select * from usr;
+-------+------+
| name  | age  |
+-------+------+
| kate  |    |
| kate' |   28 |
+-------+------+
 rows in set (0.00 sec)

mysql> insert into usr values ('kate\\', );
Query OK,  row affected (0.01 sec)

mysql> select * from usr;
+-------+------+
| name  | age  |
+-------+------+
| kate  |    |
| kate' |   28 |
| kate\ |    |
+-------+------+
 rows in set (0.00 sec)

mysql> insert into usr values ('kate"', );
Query OK,  row affected (0.01 sec)

mysql> select * from usr;
+-------+------+
| name  | age  |
+-------+------+
| kate  |    |
| kate' |   28 |
| kate\ |    |
| kate" |   28 |
+-------+------+
 rows in set (0.00 sec)

postgresql客户端

test=# create table usr (name varchar(), age integer);
CREATE TABLE
test=# insert into usr values ('kate', );
INSERT
test=# insert into usr values ('kate''', ), ('kate\', 28), ('kate"', 28);
INSERT
test=# select * from usr;
 name  | age
-------+-----
 kate  |
 kate' |  28
 kate\ |
 kate" |  28