发现v2.0中,取消了DropTableIfExists,转而封装了一个Migrator对象,是实现了根据Model去删表的操作,也就是跟之前DropTableIfExists的用法是一样的。 只不过现在调用需要这样写: DB.Migrator().DropTable(&your_model{}) 完结撒花!
DROP TABLE IF EXISTS infra_codegen_table; DROP TABLE IF EXISTS infra_codegen_table GO CREATE TABLE infra_codegen_table ( id bigint NOT NULL PRIMARY KEY IDENTITY, @@ -921,7 +925,8 @@ GO -- --- -- Table structure for infra_config -- --- DROP TABLE IF EXISTS infra_config; DROP T...
has_table(table_name): query = "DROP TABLE IF EXISTS '{:s}'".format(table_name) self.execute_query(query, logging.getLogger().findCaller()) self.commit() Example 11Source File: drivers.py From pyroSAR with MIT License 6 votes def drop_table(self, table): """ Drop a table from ...
Berechtigungen Sie müssen mindestensüber Die Berechtigungen des Tabellenadministratorsverfügen, um diesen Befehl auszuführen. Syntax .droptableTableName[ifexists] .droptables(TableName[,... ])[ifexists] Erfahren Sie mehr überSyntaxkonventionen. ...
删除表中的字段, 使用 drop 字段:alter table foo_table drop age; case 语句的两种方式即两个版本, : 最最重要的是: case分成version1, 和 version2, 而且 分成 case operator 操作算子和 case statment 语句两种. 这两种方式的 语法和用途 是不同的, 可以查看mysql的help帮助. ...
USE AdventureWorks2008R2; GO CREATE TABLE #temptable (col1 int); GO INSERT INTO #temptable VALUES (10); GO SELECT * FROM #temptable; GO IF OBJECT_ID(N'tempdb..#temptable', N'U') IS NOT NULL DROP TABLE #temptable; GO --Test the drop. SELECT * FROM #temptable;...
I'm guessing this might be related to: #13974 But in the most recent trino release we run queries like: DROP TABLE IF EXISTS hive.pipeline_prod6.tablename And if the table does not exist in the metastore we get a query failure: Error Typ...
The following SQL deletes the table "Shippers": ExampleGet your own SQL Server DROPTABLEShippers; Note:Be careful before deleting a table. Deleting a table results in loss of all information stored in the table! TRUNCATE TABLE TheTRUNCATE TABLEcommand deletes the data inside a table, but not...
ALTER TABLE 或 CREATE TABLE .. ROW FILTER 子句 ALTER VIEW ALTER VOLUME COMMENT ON CREATE CATALOG 创建连接 CREATE DATABASE CREATE FUNCTION (SQL) CREATE FUNCTION(外部) CREATE LOCATION CREATE MATERIALIZED VIEW CREATE RECIPIENT CREATE SCHEMA 创建服务器 CREATE SHARE CREATE STREAMING TABLE CREATE TABLE ...
setUpdateMsg(sprintf($_ARRAYLANG['TXT_UNABLE_GETTING_DATABASE_TABLE_STRUCTURE'], DBPREFIX .'module_market'));returnfalse; }if(!isset($arrColumns['SORT_ID'])) { $query ="ALTER TABLE `". DBPREFIX ."module_market` ADD `sort_id` INT( 4 ) NOT NULL DEFAULT '0' AFTER `paypal`";if...