您可以使用以下语法。以下是语法-
update yourTableName set yourColumnName=REVERSE(SUBSTRING(REVERSE(yourColumnName), INSTR(REVERSE(yourColumnName), '.')));
让我们首先创建一个表-
mysql> create table DemoTable -> ( -> Words text -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('Value1. Value2 .Value3.Value4.Value5');
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
输出结果
这将产生以下输出-
+--------------------------------------+ | Words | +--------------------------------------+ | Value1. Value2 .Value3.Value4.Value5 | +--------------------------------------+ 1 row in set (0.00 sec)
这是在MySQL中最后一次出现字符之前获取所有内容的查询-
mysql> update DemoTable -> set Words=REVERSE(SUBSTRING(REVERSE(Words), INSTR(REVERSE(Words),'.'))); Rows matched: 1 Changed: 1 Warnings: 0
让我们再次检查表记录-
mysql> select *from DemoTable;
输出结果
这将产生以下输出-
+--------------------------------+ | Words | +--------------------------------+ | Value1. Value2 .Value3.Value4. | +--------------------------------+ 1 row in set (0.00 sec)