Famous technical q&a site Stack Overflow survey released 2019 annual developers, among the most popular programming languages in SQL in the third place, more than half of the developers need to use SQL in a work,
Whether you are going to engage in database development and database management (DBA), or become a data analyst and data scientist, or Web/mobile development engineer, and even product manager, inevitably need to deal with the data, which requires we have the ability to access and manipulate the database, especially the relationship between the current mainstream database, such as Oracle, MySQL, SQL Server, etc.,
As the relational database standard language SQL, almost one of indispensable skill has become the IT industry, is also an indispensable part of the job search process, we in order to help you encounter before the interview, we analyzed 100 common SQL interview questions, and provide corresponding answers and analysis, the Chat mainly includes the following aspects:
- primary SQL queries, including single table query, query conditions, the use of the query result of sorting, realize list and paging query;
Common function - SQL, CASE expression, grouping summary operation, etc.;
- SQL multi-table join queries, set operators, subqueries, senior group options, common table expression, window function, etc.;
Database design and development, including database, table structure design, the DDL statements, DML statements, etc.
- indexing and query optimization, stored procedures, triggers, etc.;
- all the above problems in MySQL and Oracle implementation,
Hope to be able to bring good luck for you interview! click on the link view!
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