sqlite> SELECT * FROM Cars ORDER BY Price, Name DESC; Id Name Price --- --- --- 10 Tatra 9000 3 Skoda 9000 9 Fiat 9000 6 Citroen 21000 8 Volkswagen 21600 4 Volvo 29000 7 Hummer 41400 1 Audi 52642 2 Mercedes 57127 5 Bentley 350000 In the statement, we sort the data by two col...
Select *p, /* The SELECT statement being coded. */ NameContext *pOuterNC /* Name context for container */ ){ sqlite3 *db; if( NEVER(p==0) ) return; db = pParse->db; if( p->selFlags & SF_HasTypeInfo ) return; sqlite3SelectExpand(pParse, p);这里对select之后的内容进行展开,包...
I have an SQLite table that holds a fund name, as a string, a time stamp, as an iso8601 string, and a close, as a double. SQLite appears to call strings text and a double a real. In the function below, I query this table with a select statement to return the last year of ...
当使用预先生成的字符串和sqlite3_exec时,我得到了预期的结果。sqlite3_stmt *statement; const char *query = "SELECT * FROM foo 浏览15提问于2009-02-24得票数 12 1回答 查询标题合并的sqlite3 C应用编程接口 、 在使用命令行的sqlite3中,如果我想输入非常近似的内容并获得正确的输出,我可以使用其中是我...
/* Prior select in a compound select statement */ Select *pNext; /* Next select to the left in a compound */ Expr *pLimit; /* LIMIT expression. NULL means not used. */ With *pWith; /* WITH clause attached to this select. Or NULL. */#ifndef SQLITE_OMIT_WINDOWFUNC Window *pWin;...
The secondnamegets thrown away just as if it didn't exist in the SELECT statement. Well, at least with no-dialect SQLitewe manage to get a warning: $ ogr2ogr /vsistdout/ -f CSV \ raw.csv -sql 'SELECT Name,Name FROM raw LIMIT 1' ...
of a tableview NSAssert1(0,@"Failed to prepare statement with message '%s'.", sqlite3_errmsg(database)); NSLog(@"abfrag 浏览1提问于2013-04-02得票数 0 1回答 SQLITE请求语法错误 、、 我有一个请求的问题,它在pgsql和mysql上工作得很好,但在sqlite上,我似乎遗漏了一些东西。下面是请求:where ...
I seem to remember thinking it would be better to prevent other DB actions while iterating, but I can't remember the reasoning now! I'll think on this, and perhaps remove the restriction in a future version. My statement from before, "SQLite3 can only execute one statement at a time,...
What about a subquery for each element in the array? A correlated subquery would “work”… in the most disgusting way possible. Well, we could emit a big ol’ case statement I guess… Or wait, isn’t that just what I always tell people to use instead of … PIVOT?
就像Android SQLiteStatement 编译、执行 分析中所说的,SQLite中所有SQL语句都需要先编译为stmt,然后执行。 上述文章介绍了SQLiteStatement在android层面的编译执行。然而,类SQLiteStatement只能用以执行无返回值或者只有一行一列(1X1)的sql语句,例如INSERT ALERT 等,而像SELECT这种返回结果可能多行多列的则不适用。