Example: SQLite sum() function using multiple columns SQLite sum() function retrieves the sum value of an expression which is made up of more than one columns. The following SQLite statement returns the sum of multiplication of 'receive_qty' and 'purch_price' from purchase table for each gro...
CREATE TABLE database_name.table_name( column1 datatype PRIMARY KEY(one or more columns), column2 datatype, column3 datatype, ... columnN datatype ); CREATE TABLE 是告诉数据库系统创建新表的关键字。表的唯一名称或标识符遵循 CREATE TABLE 语句。或者,您可以指定database_name和table_name。例子...
我强烈推荐阅读Sequelcheat sheet，README和不同类的文档，它非常强大，在我看来，是一个很棒的ORM。把...
CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, ... columnN datatype, PRIMARY KEY( one or more columns ) ); SQLite CREATE TRIGGER StatementCREATE TRIGGER database_name.trigger_name BEFORE INSERT ON table_name FOR EACH ROW BEGIN stmt1; stmt2; ... END;...
integer.md performance.md threads.md tips.md troubleshooting.md unsafe.md lib src test .gitattributes .gitignore .npmrc LICENSE README.md binding.gyp package.json new Database(path, [options]) Creates a new database connection. If the database file does not exist, it is created. This happe...
SetoutputmodewhereMODEis one of: (设置输出格式)csv Comma-separated values(各字段以逗号为分隔符输出)column Left-aligned columns. (See .width)(以.width设置的宽度显示各字段)html HTML code (html表格格式输出)insert SQL insert statementsforTABLE (以insert SQL语句形式输出)line One value per line(fiel...
PRIMARY KEY( one or more columns )); SQLite CREATE TRIGGER Statement Syntax: CREATE TRIGGER database_name.trigger_name BEFORE INSERT ON table_name FOR EACH ROW BEGIN stmt1; stmt2; ... END; SQLite CREATE VIEW Statement Syntax: CREATE VIEW database_name.view_name AS SELECT...
columns_priv、tables_priv, procs_priv ⑻授权: GRANTpriv1, priv2, ...ON[TABLE|FUNCTION|PROCEDURE] db_name.tb_name|routineTO'username'@'host' [IDENTIFIED BY 'password'] [REQUIRE ssl_option] [WITH with_option] with_option: GRANT OPTION#将获得的权限转赠给他人的权限 ...
SetoutputmodewhereMODEis one of: (设置输出格式)csv Comma-separated values(各字段以逗号为分隔符输出)column Left-aligned columns. (See .width)(以.width设置的宽度显示各字段)html HTML code (html表格格式输出)insert SQL insert statementsforTABLE (以insert SQL语句形式输出)line One value per line(fiel...
[] that this points to */&nrow, /* Number of result rows written here */&ncol, /* Number of result columns written here */&zErrMsg /* Error msg written here */);if(vcol_head.size()<0) { vcol_head.clear(); }if(vdata.size()<0) { vdata.clear(); }if( rc == SQLITE_...