sql interview questions book

Q:During the interview, the interviewer suddenly came up with a concept that he had never heard of before. Can I ask the interviewer to ask him to clarify the question? Will he think I'm stupid if I ask? A: The biggest difference between an interview and a written test is:Interview is a process that focuses on communication, and communication is bidirectional.. Therefore, the interviewer can ask the applica

Let's talk about some questions about the java programmer interview. This blog post is intended for recent graduates and java programmers who have been working for about two or three years. Why do I need to change jobs? This is a broad question. Everyone has an answer. For example: The company is not well-treated, The salary increase does not meet the expected requirements, Tired of the hard work of travel

No source for the original email. Sorry. I agree with question 11th. The integrity of a person is very important, and has been finalized for a long time. Unless there are major changes, such as changing religious beliefs. ====================================== Sun Tzu, a general manager's 11 typical interview questions, said: "The soldiers, the country's major events, the land of life, the survival of the r

rewrite the aof file, the performance impact of this persistence is minimal, but the aof file will continue to grow, aof file over the General Assembly to affect the recovery speed of master restart. Master should not do any persistent work, including memory snapshots and aof log files, in particular, do not enable memory snapshots to persist, if the data is more critical, a slave open aof backup data, the policy is synchronized once per second. Master calls bgrewriteaof rewrite aof file, a

(i) Description1. document Some of the programming questions (Python) that you encounter when interviewing a test engineer. 2, review the interview process, do a summary.(ii) title1. Input: JSON {"A": "AA", "B": "BB", "C": {"D": "DD", "E": "EE"}} output: Dictionary {' A ': ' AA ', ' B ': ' BB ', ' d ': ' DD ', ' e ': ' EE '}1 defconversion (n,the_dict):2 forKey,valueinchN.items ():3 #if value i

parentheses according to the rule.13. Rule questions, 5, 8,-3, 5, 2, 3, 1, (), please write the next expression in parentheses according to the rule. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Answer: 1. Echo Date (' y-m-d h:i:s ', Strtotime ('-1 day ')); 2. Hello 3. Landogok 4. $a = "ABCD";$b = "1234";echo "Initialization a= $a, b= $b $a = $a. $b;$b = strlen ($b);$b = substr ($a, 0, (strlen ($a)-$b));$a = substr ($a, str

so file not foundNoclassdeffounderror: You can find the right class at compile time, but you can't find the right class at runtime.Iv. outofmemoryerror (Memory overflow)Cause:1, the amount of data loaded in memory is too large, such as the last time to remove too much data from the database.2, the collection class has a reference to the object, after use is not emptied, so that the JVM can not be recycled.3. There are dead loops or loops in the code that produce too many duplicate object entiti

, not as binary floating-point numbers, so that the decimal precision of those values is saved. One character is used for each digit of the value, the decimal point (if scale>0), and the "-" symbol (for negative values). If scale is 0,decimal and the numeric value does not contain a decimal point or fractional part. Decimal and numeric are worth the largest range as a double, but for a given decimal or numeric column, the actual range can be limited by the precision or scale of the given

to describe the field name, field type, and field description of each field );In the database design, you should:1. Ensure the uniqueness of each user;2. Ensure the uniqueness of each book; each book corresponds to multiple books of different numbers; Ensure the uniqueness of each book;3. In the borrowing information table, both borrowing and returning behaviors

acute: "Which writer do you like most? Which of the following books do you like most about this writer? What is the central idea of this book? What do you think after reading this book? What is the inspiration for life ?" Few candidates can answer such questions. 9 J T % L3 K (V $ A (x F applicant Should : 1. Make preparations in advance. 2. It is best not

? Window.location.href 9.MySQL database, how to optimize? Answer: (1) configuration optimization (server configuration) (2) Build table optimization (table, field settings) (3) query optimization (SQL statement) A: 1, select the most applicable field properties, to minimize the definition of field length, as far as possible to set the field not NULL, such as ' Province, gender ', preferably set to enum 2. Use connection (join) instead of subquery: 3.

sympathetic exercise that you give others feedback on the work of other people.ConclusionThe issues covered in this article cover a wide range of topics that iOS developers should be aware of. This is by no means a complete list. These questions are based on the research I've done for this book, the "iOS Interview Guide" I published. This

Oracle interview questions-Technical This may be an article you have been looking forward to. while paying attention to this part of technical questions, please be sure to read personal questions and answers during the interview. The answer here is not comprehensive. These

(avoid loss of modification) 2) Level two block protocol: increase transaction T on the basis of the first level blocking protocol must read the data R before reading the lock, you can release the read lock after reading (to avoid loss of modification and read dirty data) 3) Level three block protocol: increase the transaction T on the basis of the first level blocking protocol the lock must be read before the data R is read, until the end of the transaction is released (avoid loss of modificat

Comprehensive use of Singleton model and static loading (Youku interview questions), static modelI. original question 1/* 2 * running result 3*2 4*1 5 */6 public class BookTest {7 static BookTest book = new BookTest (); 8 static int; 9 static int B = 0; 10 11 private BookTest () {12 a ++; 13 B ++; 14} 15 16 public static void main (String [] args) {17 BookTest

pointers to functions that take an integer argument and return an integer People often claim that there are several questions that can be answered only after a book is opened. I agree with this statement. When I wrote this article, I checked the book to confirm the correctness of the syntax.But when I was interviewed, I expected to be asked this question (or sim

Tags: meaning data SQL database ODB details issues HDF cut feature threads1. What are the differences between row and column storage?What are the modes of 2.MySQL database Binlog? What's the difference?3.awk How to print out the number of columns in a file?4.awk How do I specify delimiters, and how do I specify delimiters for cut?5. What happens if one of the disks in HDFs (the amount of data is particularly large) is unplugged.6. How do I view thread

《 Program Analysis of employee interview logic questions original title: puzzles for programmers and pro Author: (US) Dennis E. shasha [Introduction to translators] Translator: Fei Ruoyu Zhu xuewu Press: People's post and telecommunications Press ISBN: 9787115301956 Release Date: January 2013 published on: 16: 1-1 category: Computer For more information, "" Analysis of programmer

often claim that there are several questions that can be answered only after a book is opened. I agree with this statement. When I wrote this article, I checked the book to confirm the correctness of the syntax.But when I was interviewed, I expected to be asked this question (or similar questions ). Because I knew the

PHP classic interview questions and php classic questions. PHP classic interview questions, php classic questions, this article is a more detailed analysis of the PHP classic interview