Question

我正在尝试在新创建的SQLite数据库中创建一个表。出于某种原因，我得到了一个SQLException：

try {
        logger.debug("Trying to create table powerperms_permissions if not exists");
        statement.execute("CREATE TABLE IF NOT EXISTS powerperms_permissions ( "
                + "id INT NOT NULL AUTOINCREMENT,"
                + "uuid VARCHAR ( 64 ) NOT NULL,"
                + "permission VARCHAR ( 64 ) NOT NULL,"
                + "world VARCHAR ( 32 ) NULL,"
                + "PRIMARY KEY ( id ) );");
    } catch (SQLException e) {
        logger.error("Couldn't create permissions table",e);
    }

引发

[07:49:17 ERROR]: [PowerPerms] Couldn't create permissions table
java.sql.SQLException: [SQLITE_ERROR] SQL error or missing database (near "AUTOINCREMENT": syntax error)
    at org.sqlite.DB.newSQLException(DB.java:383) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.sqlite.DB.newSQLException(DB.java:387) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.sqlite.DB.throwex(DB.java:374) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.sqlite.NativeDB.prepare(Native Method) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.sqlite.DB.prepare(DB.java:123) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.sqlite.Stmt.execute(Stmt.java:113) ~[spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at eu.taigacraft.powerperms.Main.registerSqlite(Main.java:240) [PowerPerms_v1.0.jar:?]
    at eu.taigacraft.powerperms.Main$2.run(Main.java:48) [PowerPerms_v1.0.jar:?]
    at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:71) [spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) [spigot-1.10.jar:git-Spigot-6016ac7-10c10b3]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_72]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_72]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]

为什么？

Answer 1

您只能将AUTOINCREMENT keyword与INTEGER PRIMARY KEY一起使用，而不能INT NOT NULL使用。

Answer 2

确保主键在auto_increment之前，然后它将起作用

Answer 3

必须有一个数据库，自动增量拼写为AUTO_INCREMENT而不是null可能会影响你的代码，具体取决于你的dbms

SQLITE_ERROR - SQL错误或缺少数据库（“AUTOINCREMENT”附近：语法错误）

3 个答案: