V_SQL :='create or replace view mytest as select employee_id, first_name from employees'; EXECUTE IMMEDIATE V_SQL;--EXECUTE IMMEDIATE用法2:立刻执行,并赋值给某变量 V_SQL :='select count(1) from employees'; EXECUTE IMMEDIATE V_SQL; INTO V_NUM;--EXECUTE IMMEDIATE用法3:带参数的sql V_SQL...
execute immediate v_sql; 1. 2. 3. 2.执行sql语句,并赋值给某个变量 v_sql := 'select name from Test'; execute immediate v_sql into v_name; 1. 2. 3.执行带参数的sql v_sql:='select * from Test where name=:1 and age=:2'; execute immediate v_sql using 'lw112190',20; 1. 2....
execute immediate v_sql; 1. 2. 3. 4. 5. 6. 7. 8. 生成的语句直接执行可以成功 SQL> insert /*+ append parallel(ilmtest.test0701,4) */ into ilmtest.test0701 select /*+ parallel(i,4) */ * from ilmtest.test0701@link i where i.msgtime>=1559318400000 and i.msgtime<1559404800000; ...
createorreplaceprocedureproc_test(--参数区域)is--变量区域--sql脚本v_sqlvarchar2(2000) :='';--记录学生数量v_numnumber;begin--执行区域--execute immediate用法1:立刻执行sql语句v_sql :='create or replace view myview as select id,name from student';executeimmediate v_sql;--- execute immediate...
首先,execute immediate v_sql语句需要硬解析,这是一个较为耗时的过程,而直接拿出来执行的语句,其查询分析树已经存在,所以只需要软解析。另外,execute immediate语句由于是硬解析,所以每次出来的计划都有可能不同,这是最需要注意的,可以为两种执行方法设置10046跟踪,看一下每种方法的耗时点,以及...
EXECUTE IMMEDIATE v_sql INTO v_employee_name USING 100; DBMS_OUTPUT.PUT_LINE('Employee Name: ' || v_employee_name); END; ``` 示例2:使用EXECUTE IMMEDIATE执行一条SQL UPDATE语句 ```sql DECLARE v_sql VARCHAR2(1000); BEGIN v_sql := 'UPDATE employees SET salary = salary * 1.1 WHERE hi...
execute immediate v_sql;--- execute immediate⽤法2:⽴刻执⾏sql语句,并赋值给某个变量 v_sql :='select count(1) from student';execute immediate v_sql into v_num;-- execute immediate⽤法3:带参数的sql v_sql:='select * from student t where t.name=:1 and t.age=:2';execute ...
Oracle中的"execute immediate"是一个关键工具,主要用于在编程时动态执行SQL语句。这个命令在处理非预编译的、需要根据运行时输入动态构建的SQL查询时尤为有用。例如,当你需要在存储过程中根据传入的参数,如表名,来检索数据时,静态的SQL如'COUNT(*) FROM v_variable'就无法直接执行。此时,就需要借助...
sql复制代码 EXECUTE IMMEDIATE 字符串 INTO 变量 [, 变量 ...] 或者 sql复制代码 EXECUTE IMMEDIATE 字符串 USING 变量 [, 变量 ...] 字符串是要执行的SQL语句字符串。 变量是用于替换字符串中的参数的变量或常量。 示例: 1. 动态创建表: 2. sql复制代码 DECLARE v_sql VARCHAR2(1000); v_tableName ...
count(*)) from tb_web_ticketreturn t where t.fromstationid = '||iv_fromStation||'and t.returndate between to_date('''||iv_beginDate||''',''yyyy-mm-dd'')and to_date('''||iv_endDate||''',''yyyy-mm-dd'')';EXECUTE IMMEDIATE v_sql INTO ov_totalRecords;...