sqllite select

SQLite, is a lightweight database, is to adhere to the Acid relational database management system, its design goals are embedded, and has been used in many embedded products, it occupies very low resources, in embedded devices, may only need

In the Sqllite database is often a data file is a schema, but in peacetime business or some conditions may be different content stored in different schemas, that is, different data files, There are scenarios where data correlation is required to

In HTML5, direct access to the built-in database can be as easy as accessing a local file.There are two types of databases built into HTML5, one for Sqllite and the other for INDEXEDDB.steps to use the Sqllite database in JS:1. Create an object that

Web storage are divided into two categories:-Sessionstorage: Data is saved in Session object (temporary)-Localstorage: Data is stored on a local hardware device (permanent)Sessionstorage:There are two ways to save data:Sessionstorage.setitem (' key '

When we group by on a table record, when aggregate functions such as SUM, Min, max are not explicitly used, the group by collation is compared with MySQL and sqlliteAs you all know, when group by, the database is matched to all records that traverse

Localstorage and CookiesCookie disadvantage:①cookie size limit is around 4k, not suitable for storage of business data②cookie each time it is sent with an HTTP transaction, wasting bandwidthLocalstorage Advantages:①localstorage Size limited to about

SELECT * from Table ORDER by ID DESC Limit 10,9Limit semantics: Skip 10 lines and take 9 rowsReference:SQLite limit Usage If I'm going to 11-20 of the Account table data Select * From account Limit 9 Offset 10; The above statement means getting data

SQL DML and DDLSQL can be divided into two parts: Data manipulation Language (DML) and data definition language (DDL).Note: the "--" double minus sign is the line commentSQL (Structured Query language) is the syntax for executing queries. However,

SQlite (structrue Query Language, structured querying language) is a lightweight database that is used primarily for mobile devices. Weakly typed database (although there is no error in writing a segment, but for better porting to an enterprise

1. Right-click to reference the nuget package and install vici coolstorage 2. You can see two more files in the reference: vici. coolstorage. WP8 and vici. Core. WP8. 3, Public class SQLite{ Private Static SQLite _ instance; Public static SQLite