from user_objects where object_name = upper(p_table); if v_count > 0 then execute immediate 'drop table ' || p_table ||' cascade constraints'; end if; end; / --调用 exec proc_dropifexists('mytable'); ...
where object_name = upper(p_table); if v_count > 0 then execute immediate 'drop table ' || p_table ||' purge'; end if; end; / --调用 exec proc_dropifexists('mytable');
DROP TABLE IF EXISTS [table_name] Oracle: BEGIN EXECUTE IMMEDIATE 'DROP TABLE [table_name]'; EXCEPTION WHEN OTHERS THEN NULL; END; 1. SQL Server: IF EXISTS ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = '[table_name]') DROP TABLE [table_name] if exists (select ...
THEN Table_Exists :=0; if(table_exists)=1 Then Execute Immediate 'Drop Table TABLENAME1;' 'Create Table TABLENAME1;'; DBMS_OUTPUT.PUT_LINE('Table Dropped and Re-Created!'); Else Execute Immediate 'Create Table TABLENAME1;'; DBMS_OUTPUT.PUT_LINE('New Table Created!'); END IF; END...
2、pg_事件_触发器_ddl_命令()和DROP TABLE命令3、确定DROP TABLE是否成功4、如何强制drop temp table命令完全删除表?5、org.h2.jdbc.JdbcSQLSyntaxErrorException:SQL语句“drop table if exists[*]user CASCADE”中出现语法错误;预期的“标识符”;SQL语句: ...
2 Oracle, drop table if it exists AND empty 28 Drop table if exists in PostgreSQL database 5 Oracle SQL - If Exists, Drop Table & Create 1 How can drop table if table exists in oracle? 0 oracle drop table if doesn't exist (in one line) 1 Drop table with condition - Oracle...
类似dorp table if exists,语句可反复执行 开发人员编写sql,让实施人员执行 直接写drop table abc,如果abc表已经被删除或者不存在,返回报错信息,对于不懂sql的实施人员来说,会产生干扰 1. 2. 3. 4. 5. 代码示例 创建存储过程 适用于drop table, procedure, function, trigger, view, sequence ...
19 DROP TABLE IF EXISTS sys_area; CREATE TABLE sys_area ( idintNOT NULL AUTO_INCREMENT COMMENT'编号', parent_id varchar(64) NOT NULL COMMENT'父级编号', parent_ids varchar(2000) NOT NULL COMMENT'所有父级编号', name varchar(100) NOT NULL COMMENT'名称', ...
declarei integer;beginselect count(*) into i from user_tables wheretable_name='XB_TEST001';if i>0 thendbms_output.put_line('该表已存在!');execute immediate 'DROP TABLE XB_TEST001';elsedbms_output.put_line('该表不存在');end if;execute immediate 'CREATE TABLE XB_TEST001(id int primar...