select distinct id, value from t1; 字段表中可以使用条件结果语句case。 case valuewhen x/cond1 then value1when y/cond2 then value2when z/cond3 then value3else nullend [ , ]create table y( f int );insert into y values(1); insert into y values(3);insert into y values(2); insert ...
ORDER BY clause that is part of a SELECT statement may be assigned a collation sequence to be used for the sort operation explicitly. In this case the explicit collation sequence is always used. Otherwise, if the expression sorted by an ORDER BY clause is a column, then the default collatio...
3) List whereArgs: List with contentions for the WHERE statement. These contentions will be supplanted by ‘?’ in the whereClause. Returns the number of columns influenced if a whereClause is passed in, 0 in any case. SingleSQL Single SQL parameter is used to execute the only single query...
ORDER BYclause that is part of a SELECT statement may be assigned a collation sequence to be used for the sort operation explicitly. In this case the explicit collation sequence is always used. Otherwise, if the expression sorted by an ORDER BY clause is a column, then the default collation...
SQLite 使用上文提到的testcase()宏弥补了 bit-vector 的各种可能结果,这样就实现了 100% 的分支覆盖率 基础上,同样达到了 100% MC/DC 覆盖率。 7.5 统计分支覆盖率 目前,SQLite 使用gcov加上-b参数统计 分支覆盖率 Branch coverage in SQLite is currently measured using gcov with the “-b” option. Fir...
SQLite COMMIT Statement: COMMIT; SQLite CREATE INDEX Statement Syntax: CREATE INDEX index_name ON table_name ( column_name COLLATE NOCASE ); SQLite CREATE UNIQUE INDEX Statement Syntax: CREATE UNIQUE INDEX index_name ON table_name ( column1, column2,...columnN); ...
Examples Creating a table and inserting data Getting a single row Getting many rows Inserting rows Updating rows Prepared statement each() Get the driver instance Closing the database ES6 tagged template strings Migrations Typescript tricks Import interfaces from sqlite ...
Now, let’s insert a new student and run the function LAST_INSERT_ROWID() again after the insert statement, like this: INSERT INTO Students VALUES(11, 'guru', 1, '1998-10-12'); SELECT LAST_INSERT_ROWID(); This will give you: ...
If you want to know how to perform a storage without primary key take a look at date_time.cpp example in examples folder.Prepared statementsPrepared statements are strongly typed.// SELECT doctor_id // FROM visits // WHERE LENGTH(patient_name) > 8 auto selectStatement = storage.prepare(...
FTS3和FTS4是SQLite虚拟表格模块,允许用户对一组文档执行全文搜索。描述全文搜索的最常见(也是最有效的)方式是“Google,Yahoo和Bing在万维网上放置文档时所做的事情”。用户输入一个术语,或一系列条款,由二元运算也许连接或组合成一个短语,和全文查询系统找到一套文件最符合考虑到运营商的条款和集团用户已经指定。本文...