sql date variables plsql toad 我想在TOAD中使用一个变量来表示WITH-SQL-Statement,因为今天的日期被多次使用。 我尝试使用变量、DEFINE和Declare来设置变量,但还没有成功。 脚本应该如下所示: DECLARE TODAY date := SYSDATE(); BEGIN WITH SUBQUERY1 AS ( SELECT * FROM TABLE WHERE TABLE.DATE = &TODAY ),...
CREATE PROCEDURE proc_vars() SPECIFIC proc_vars LANGUAGE SQL BEGIN DECLARE v_rcount INTEGER; DECLARE v_max DECIMAL (9,2); DECLARE v_adate, v_another DATE; DECLARE v_total INTEGER DEFAULT 0; -- (1) DECLARE v_rowsChanged BOOLEAN DEFAULT FALSE; -- (2) SET v_total = v_total + 1; ...
DO $$ DECLARE varID INT := 1; varDate DATE := CURRENT_DATE; BEGIN INSERT INTO my_table (ID, DATE) VALUES (varID, varDate); END $$; 在这个例子中,我们使用了匿名代码块(DO $$ ... $$)来声明和使用变量,并执行插入操作。 应用场景 创建带有ID和DATE字段的表通常用于记录事件、订...
U-SQL // Will failDECLARE@varstring;// Will also failDECLARE@varstring="";SET@var="a value" See Also Using Variables (U-SQL)
DECLARE * ERROR at line 1: ORA-01027:bind variablesnotallowedfordata definition operations ORA-06512:at line 8 解决办法,将绑定变量直接拼接,如下: sql_stmt:='CREATE TABLE tb_tmp '||'AS SELECT * FROM scott.emp '||'WHERE deptno = '||v_deptno; ...
DECLARE -- Local variables num1 number := 195; num2 number := 185; BEGIN dbms_output.put_line('Inner Variable num1: ' || num1); dbms_output.put_line('Inner Variable num2: ' || num2); END; END; / 当执行上面的代码,产生以下结果: ...
SETDATEFORMAT dmy;DECLARE@t2ASDATE='12/5/2011';SETLANGUAGEdutch;SELECTCONVERT(VARCHAR(11), @t2,106); GO Results when the compatibility level is less than 120:12 May 2011 Results when the compatibility level is set to 120 or higher:12 mei 2011 ...
SET DATEFORMAT dmy; DECLARE @t2 AS DATE = '12/5/2011'; SET LANGUAGE dutch; SELECT CONVERT (VARCHAR (11), @t2, 106); GO Results when the compatibility level is less than 120: 12 May 2011 Results when the compatibility level is set to 120 or higher: 12 mei 2011 C. For compatibil...
This example specifies user-defined variables as arguments for number and date: SQL Copy DECLARE @days AS INT = 365, @datetime AS DATETIME = '2000-01-01 01:01:01.111'; /* 2000 was a leap year */ SELECT DATEADD(day, @days, @datetime); Here's the result set. Output Copy 2000...
declare v_comm_percent constant number:=10; begin update emp set comm=sal*v_comm_percent where deptno=10; end SQL> / PL/SQL procedure successfully completed. SQL> 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 命名的程序与匿名程序的执行不同,执行命名的程序块必须使用execute关键字: ...