sqlsugar sqlite 多线程 database is locked 多线程查询sql,一、由于具有多张宽表且字段较多,每个宽表数据大概为4000万条,根据业务逻辑拼接别名,并每张宽表的固定字段进行leftjoin拼接SQL。这样就能根据每个宽表的主列,根据每个宽表的不同字段关联出一张新的集合。由于
针对Go语言modernc.org/sqlite驱动并发读写过程中的报错“database is locked (5) (SQLITE_BUSY)”的研究。 测试代码 代码语言:go 复制 packagemainimport("database/sql""fmt""sync""time"_"modernc.org/sqlite")funcmain(){vardb,err=sql.Open("sqlite","db.sqlite")iferr!=nil{panic("connect db er...
int sqlite3_exec(sqlite3*, const char *sql, sqlite3_callback, void *, char **errmsg ); 这就是执行一条 sql 语句的函数。 第1个参数不再说了,是前面open函数得到的指针。说了是关键数据结构。 第2个参数const char *sql 是一条 sql 语句,以/0结尾。 第3个参数sqlite3_callback 是回调,当这条...
#define SQLITE_BUSY 5 /* The database file is locked */ #define SQLITE_LOCKED 6 /* A table in the database is locked */ #define SQLITE_NOMEM 7 /* A malloc() failed */ #define SQLITE_READONLY 8 /* Attempt to write a readonly database */ #define SQLITE_INTERRUPT 9 /* Operati...
{ case SQLITE_OK : return "SQLITE_OK"; case SQLITE_ERROR : return "SQLITE_ERROR"; case SQLITE_INTERNAL : return "SQLITE_INTERNAL"; case SQLITE_PERM : return "SQLITE_PERM"; case SQLITE_ABORT : return "SQLITE_ABORT"; case SQLITE_BUSY : return "SQLITE_BUSY"; case SQLITE_LOCKED : ...
if( rc != SQLITE_OK ) { fprintf(stderr, "SQL error: %s\n", errMsg); sqlite3_free(errMsg); // 处理错误 switch (rc) { case SQLITE_CONSTRAINT: fprintf(stderr, "Constraint failed!\n"); break; case SQLITE_LOCKED: fprintf(stderr, "Database is locked!\n"); ...
Callback routine requested an abort */#define SQLITE_BUSY 5/* 数据库文件被锁定,The database file is locked */#define SQLITE_LOCKED 6/* 数据库的一个表被锁定,A table in the database is locked */#define SQLITE_NOMEM 7/* 某次malloc函数调用失败,A malloc() failed */#define SQLITE_READ...
int sqlite3_open( 文件名, sqlite3 ** ); 用这个函数开始数据库操作。 需要传入两个参数,一是数据库文件名,比如:c://DongChunGuang_Database.db。 文件名不需要一定存在,如果此文件不存在,sqlite 会自动建立它。如果它存在,就尝试把它当数据库文件来打开。
#define SQLITE_LOCKED6/* A table in the database is locked */ #define SQLITE_NOMEM7/* A malloc() failed */ #define SQLITE_READONLY8/* Attempt to write a readonly database */ #define SQLITE_INTERRUPT9/* Operation terminated by sqlite_interrupt() */ ...
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