IF V_COMM IS NULL THEN RAISE E_COMM_IS_NULL; -- 抛出一个自定义异常,如果发生异常就会调转到EXCEPTION部分 END IF; EXCEPTION WHEN NO_DATA_FOUND THEN DBMS_OUTPUT.PUT_LINE('雇员不存在!错误为:'||SQLCODE||SQLERRM); WHEN E_COMM_IS_NULL THEN --处理自定义异常 DBMS_OUTPUT.PUT_LINE('该雇员无...
Transaction currentTx = null; Object result = null; try { Context initialContext = new InitialContext(); UserTransaction userTrx = (javax.transaction.UserTransaction) initialContext .lookup("java:comp/UserTransaction"); if (!(userTrx.getStatus() == Status.STATUS_NO_TRANSACTION)) { tm = Transactio...
if(conalermType.selectedItem != null && conalermType.selectedItem != ""){ trace(conalermType.selectedItem.ALERMTYPE as String); var alt:String =conalermType.selectedItem.ALERMTYPE as String ; othersql += " and t.WARNING_MESSAGE ='"+alt+"'"; } var otherasel:String=""; if(alermStat...
v_CELLNamevarchar2(100):='';--条码v_ParentSNvarchar2(100):=null;--父条码--v_SubSN varchar2(100):=''; --子条码v_bJump boolean:=false;--是否跳过v_ProcNamevarchar2(32):='';--工序名v_rowcountnumber:=0;--记录行数v_ParentSNCountnumber:=0;begin--将指定时期内 BarCode 最早出现的时...
The SQL statement above would return 'n/a' if the supplier_city field contained a null value. Otherwise, it would return the supplier_city value. Another example using the NVL function in Oracle/PLSQL is: SELECT supplier_id, NVL(supplier_desc, supplier_name) ...
IF条件判定为真THEN 可执行语句块1 ELSE 可执行语句块2 ENDIF; •示例 25 条件转移-IFTHENELSE •示例 26 条件转移-IFTHENELSIF •语法 IF条件判定为真THEN 可执行语句块1 ELSIF 可执行语句块2 ……. ELSIF 可执行语句块N ENDIF; •示例
IF (wf_log.subnode_id IS NOT NULL) THEN DBMS_OUTPUT.PUT_LINE( 'Subnode Id: '||wf_log.subnode_id||', '||'Subnode Name: '||wf_log.subnode_name); END IF; DBMS_OUTPUT.PUT_LINE('Message: '||wf_log.log_message); v_failure := v_failure + 1; END LOOP; IF (v_failure =...
的值必须判定为TRUE 可以将REPLACE 添加到CREATE 语句以自动 删除和重建触发器 37 创建数据库触发器(续) CREATE TRIGGER flight_update AFTER INSERT ON reservation FOR EACH ROW BEGIN IF :new.class = ‘F’ THEN 语句; ELSIF :new.class = ‘B’ THEN ...
CREATE OR REPLACE PACKAGEaa_pkgAUTHID DEFINER IS TYPEaa_typeIS TABLE OF INTEGER INDEX BY VARCHAR2(15); END; / CREATE OR REPLACE PROCEDURE print_aa (aa aa_pkg.aa_type) AUTHID DEFINER IS i VARCHAR2(15); BEGIN i := aa.FIRST; WHILE i IS NOT NULL LOOP DBMS_OUTPUT.PUT_LINE (aa(i)...
(); } return null; } /* * 运行Java: * java -Xms100M -Xmx200M HelloWorld * * 技术方向: * 1、性能优化 * 2、故障诊断:死锁(JDK: ThreadDump) * Oracle: 自动处理 */ public static void release(Connection conn,Statement st,ResultSet rs){ if(rs != null){ try { rs.close(); } ...