string index out of range

Custom InstallationProgramIt contains a database connection test program that inputs the user name and password, but the error "starting from index X, the format of the initialization string does not comply with the specifications" is reported during deployment at the user ", first, it is suspected that the TCP/IP protocol is not enabled for the database, so it is manually enabled. Then use the SQL manager

Prepare Data:Create table 'test _ idx '('I' int (10) NOT NULL,'S 'varchar (10) not null,KEY 'I' ('I '),KEY's '('s ')) ENGINE = InnoDB default charset = utf8;Insert into test_idx (I, s) values (1, '1'), (2, '2'), (3, '3'), (4, '4'), (5, '5'), (6, '6'), (7, '7'), (8, '8'), (9, '9 ');Test 1:Explain select * from test_idx where I = 1;Explain select * from test_idx where I =

Town Field Poem:The Pure Heart sentiment wisdom language, does not have the world name and the benefit. Learn water under the hundred rivers, give up arrogant slow meaning.Learn to have a small return to feed root, willing to cast a conscience blog. Sincere in this writing experience, willing to see the text to inspire.——————————————————————————————————————————EX1:Code1 DOCTYPE HTML>2 HTML>3 Head>4 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8"/>5 title>title>6 Scr

Today, I used SSIS to create a small Excel extraction program. The following error occurs during the preview Excel Data: There was an error displayingthe preview.Additional information: Index and length must refer Toa location within the string. Parameter Name: length (mscorlib) The reason for this error is that the Excel sheet name is incorrect. The solution is to modify the Excel sheet name. Th

This paper analyzes the effect of string index on update in MySQL. Share to everyone for your reference, specific as follows: When you add a prefix index to a field that has a type of varchar, the conditional query time is substantially reduced based on the child segment, but the time spent on the update operation has increased dramatically, mainly because MySQL

The index method of python is used to locate the first occurrence of a substring in a string. It is similar to the find method of a string. However, it is better than the find method. If the substring cannot be found, an exception is thrown, instead of returning-1 For example: Info = 'abca'Print info. Index ('A ') R

| +----+-------------+--------+------+---------------+-------------+---------+-------+------+-------+ | 1 | Simple | test_2 | Ref | idx_user_id | idx_user_id | 4 | Const | 2 | | +----+-------------+--------+------+---------------+-------------+---------+-------+------+-------+ 1 Row in Set (0.00 sec) Mysql> Explain select * from test_2 where user_id= ' 1 ';+----+-------------+--------+------+---------------+-------------+---------+-------+------+-------+| ID | Select_type | Table | Type | P

Indexes and Shards>>> Wu = ' wuang '>>> Wu[0]' W '>>> Wu[1]' U '>>> wu[1:]' Uang '>>> Wu[1:3]' UA '>>> Wu[-1]' G '>>> Wu[:-1]' Wuan 'Index: Wu[i]The first element has an offset of 0[0]: first element[-1]: last elementShard Wu[i:j]Upper boundary (i) does not containIf I is not given, the default is 0Wu[1:3]Wu[:3]WU[:-1]wu[:]Shards also have a limit valueCalled SteppingWU[I:J:K]Offset to I until j-i, indexed once per k elementWu[1:4:2]The result is>>> W

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It seems that this problem occurs only when the ACCESS database is used. The reason is that the connection statement is wrong, so"Starting from index 0, the format of the initialized string is invalid. "This errorExample of Asp.net C # below Common error: only the database path is written Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Oledbconnecti

Town Field Poem:The Pure Heart sentiment wisdom language, does not have the world name and the benefit. Learn water under the hundred rivers, give up arrogant slow meaning.Learn to have a small return to feed root, willing to cast a conscience blog. Sincere in this writing experience, willing to see the text to inspire.——————————————————————————————————————————CodeResult——————————————————————————————————————————The essence of the blog, in the technical part, more in the town yard a poem. ide:vs2

In the study of the index of MongoDB is to find a strange problem, set the text index to a string field, but did not use the index when querying. Like what: Db.tomcat_access_logs.ensureIndex ({url: ' text '}); Db.tomcat_access.logs.find ({url: ' 1 '}). explain ();Db.tomcat_access_logs.find ({url:/1/}). Explain (); {

The C language itself does not have a function to find a string and return an index, although it is easier to say that you can get an index by writing a lookup function.C language has a strchr function to find the first position of the character, the key is this function, if used skillfully, you can also get the index

Unexpected number (index) error with JSON string such asvar jsonstr = "{1: ' Beijing note Notes ', 2: ' Shanghai note Notes ', 3: ' Guangdong Note Information ', 4: ' Shenzhen note ' Note 4 ', 5: ' Tianjin note ' Note 5 ', 6: ' Hubei Note 6 ', 7: ' Chongqing note 7 ', 8: ' EU note note 8 ', 9: ' California State note Information 8 ', 10: ' Quebec, Canada Note ', 11: ' Rggi Association of Northeastern United

String is immutable in Java. You can ' t change them.You need to create a new string with the character replaced.String myName = "Domanokz"= myname.substring (0,4) + ' x ' +myname.substring (5);Or can use a StringBuilder:New StringBuilder ("Domanokz"); Myname.setcharat (4, ' X '); System.out.println (myName);Http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-

Label:Category_search_name similar to the following 0-123: Clothing Shoes and hats 0-123-137-202: Clothing shoes and hats-0-speed food-0 instant noodles first-with the second-(the number between the:) is the first-level category ID (123)Substring_index (Substring_index (Substring_index (Category_search_name, '-', 2), '-',-1), ': ', 1) Substring_index (Category_search_name, '-', 2) means interceptthe second of the Category_search_name string-thebeforea