sqlite特性只能添加字段不能修改字段的解决方法和phpsqlite的管理工具sqlbuddy

sqlite特性  只能添加字段 不能修改字段 的解决方法 和php sqlite的管理工具

1. php管理工具 

  sqlbuddy

  功能完善 都是 没有 修改字段的变通办法提供,sqlbuddy建立的sqlite ，用sqlitemanager打不开 提示有密码

   phpsqliteadmin

   功能太简单，不完善，

2 sqlite特性  只能添加字段 不能修改字段 的解决方法 

修改字段

BEGIN TRANSACTION;


ALTER TABLE "proxyip" RENAME TO sqlitemanager_temp_table_14678003456;


CREATE TABLE "proxyip" ("column1" INTEGER PRIMARY KEY AUTOINCREMENT, "column23" TEXT);


INSERT INTO "proxyip" ("column1","column23") SELECT "column1","column24" FROM sqlitemanager_temp_table_14678003456;


DROP TABLE sqlitemanager_temp_table_14678003456;


COMMIT;

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删除字段

BEGIN TRANSACTION;


ALTER TABLE "proxyip" RENAME TO sqlitemanager_temp_table_14465963723;


CREATE TABLE "proxyip" ("column1" INTEGER PRIMARY KEY AUTOINCREMENT);

INSERT INTO "proxyip" ("column1")  SELECT "column1" FROM sqlitemanager_temp_table_14465963723;

DROP TABLE sqlitemanager_temp_table_14465963723;


COMMIT;



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sqldubby生成的sqlite  用 sqlitemanager 打不开

原因：

     sqlitemanager  我下载的版本 支持sqlite3 ,sqldubby生成sqlite 2

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SQLite3 — SQLite3 类
SQLite3::busyTimeout — Sets the busy connection handler
SQLite3::changes — Returns the number of database rows that were changed (or inserted or deleted) by the most recent SQL statement
SQLite3::close — Closes the database connection
SQLite3::__construct — Instantiates an SQLite3 object and opens an SQLite 3 database
SQLite3::createAggregate — Registers a PHP function for use as an SQL aggregate function
SQLite3::createCollation — Registers a PHP function for use as an SQL collating function
SQLite3::createFunction — Registers a PHP function for use as an SQL scalar function
SQLite3::escapeString — Returns a string that has been properly escaped
SQLite3::exec — Executes a result-less query against a given database
SQLite3::lastErrorCode — Returns the numeric result code of the most recent failed SQLite request
SQLite3::lastErrorMsg — Returns English text describing the most recent failed SQLite request
SQLite3::lastInsertRowID — Returns the row ID of the most recent INSERT into the database
SQLite3::loadExtension — Attempts to load an SQLite extension library
SQLite3::open — Opens an SQLite database
SQLite3::prepare — Prepares an SQL statement for execution
SQLite3::query — Executes an SQL query
SQLite3::querySingle — Executes a query and returns a single result
SQLite3::version — Returns the SQLite3 library version as a string constant and as a number
SQLite3Stmt — SQLite3Stmt 类
SQLite3Stmt::bindParam — Binds a parameter to a statement variable
SQLite3Stmt::bindValue — Binds the value of a parameter to a statement variable
SQLite3Stmt::clear — Clears all current bound parameters
SQLite3Stmt::close — Closes the prepared statement
SQLite3Stmt::execute — Executes a prepared statement and returns a result set object
SQLite3Stmt::paramCount — Returns the number of parameters within the prepared statement
SQLite3Stmt::reset — Resets the prepared statement
SQLite3Result — SQLite3Result 类
SQLite3Result::columnName — Returns the name of the nth column
SQLite3Result::columnType — Returns the type of the nth column
SQLite3Result::fetchArray — Fetches a result row as an associative or numerically indexed array or both
SQLite3Result::finalize — Closes the result set
SQLite3Result::numColumns — Returns the number of columns in the result set
SQLite3Result::reset — Resets the result set back to the first row

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sqlbuddy 可以改写成 支持sqlite3 目前暂时不支持 未完待续。。。。。。。。。。

sqlbuddy 1.33 稍微修改下 既可以支持 sqlite3

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sqlite2 不支持alter table * add column bb ，不支持增加字段

sqllite3 支持增加字段