TheDROP TABLE IF EXISTSstatement is misused due to wrong understanding of its syntax. Possible Causes The operations performed byDROP TABLE IF EXISTSare as follows: Check whether a table exists on the current CN. If it does, deliver theDROPcommand to other CNs and DNs. If it does not, no...
语法: 删表 DROP TABLE Syntax DROP [TEMPORARY] TABLE [IF EXISTS] tbl_name [, tbl_name] ... [RESTRICT | CASCADE] 可一次删除一张或多张表。需具有所删除表上的DROP权限。表定义文件和数据文件均被移除。
问使用"DROP TABLE IF EXISTS“时出现DBI语法错误ENCREATE OR REPLACE PROCEDURE DROPEXITSTABS (TAB_N...
syntaxsql Copy -- Syntax for SQL Server, Azure SQL Database, Warehouse in Microsoft Fabric DROP TABLE [ IF EXISTS ] { database_name.schema_name.table_name | schema_name.table_name | table_name } [ ,...n ] [ ; ] syntaxsql Copy -- Syntax for Azure Synapse Analytics and Paralle...
syntaxsql -- Syntax for SQL Server, Azure SQL Database, Warehouse in Microsoft FabricDROPTABLE[IFEXISTS] {database_name.schema_name.table_name|schema_name.table_name|table_name} [ ,...n ] [ ; ] syntaxsql -- Syntax for Azure Synapse Analytics and Parallel Data WarehouseDROPTABLE{database...
MySQL DROP TABLE statement syntax In order to remove existing tables, you use the MySQLDROP TABLEstatement. The syntax of theDROP TABLEis as follows: DROP [TEMPORARY] TABLE [IF EXISTS] table_name [, table_name] ... [RESTRICT | CASCADE] ...
and in this case the level, as mentioned in the DROP TABLE Syntax chapter of the manual, is merely a note. It can be argued either way as to whether or not one cares to know whether the table actually existed, so this is purely an informational message for those who may in fact care...
DROPTABLEtable_name;DROPTABLE[IFEXISTS] table_name; DROP TABLE table_name;删除一个名为 table_name的表 DROP TABLE IF EXISTS table_name;执行了这条语句如果存在table_name表就删除,不存在不会报错也是执行。 mysql> show tables; +---+ | Tables_in_database_name | +-...
ALTER TABLE ADD COLUMN IF NOT EXISTS column_name CREATE INDEX IF NOT EXISTS index_name I do not think it is like RECREATE. I do not want to create it again or modify existing table data. That is not what Adriano said. He just said the RECREATE and CREATE OR ALTER statements are also...
Syntax Drop_Table_Statement := 'DROP' 'TABLE' ['IF' 'EXISTS']Identifier. Remarks Identifier Identifies the table to be dropped. If the Identifier is a three-part identifier, the table will be dropped from the specified database and schema. If the Identifier is a two-part identifier, then...