PLS-00103：遇到符号“；如果；在oracle函数中预期出现以下情况之一时

我正在编写下面的函数，在该函数中，我得到的错误为

PLS-00103:在预期以下情况之一时遇到符号“IF”：（+case mod new null

。我知道这个错误出现在我试图用

THRESHOLD\u MIN\u ALERT

字符串附加if条件的那一行。我想用if条件和值附加字符串

Minimum THRESHOLD

。例如，对于

Minimum THRESHOLD

，它应该是这样的if

V\u THRESHOLD_最小警报=Y

然后

THRESHOLD_MIN_ALERT(Alert Configured) 100

THRESHOLD_MIN_ALERT 100

如果

V\u阈值\u MIN\u警报=N

，则

THRESHOLD_MIN_ALERT(Alert Configured) 100

THRESHOLD_MIN_ALERT 100

如果我删除If条件，则我的函数运行良好。我不知道如何附加If编码的语法。以下是我的函数：

FUNCTION BUILD_ALERT_EMAIL_BODY
    (
      IN_ALERT_LOGS_TIMESTAMP IN TIMESTAMP
    ) RETURN VARCHAR2 AS
    BODY VARCHAR2(4000) := '';
    V_KPI_DEF_ID NUMBER := '';
    V_KPI_TYPE_ID NUMBER := '';
    V_KPI_THRESHOLD_MIN_VALE NUMBER := '';
    V_KPI_THRESHOLD_MAX_VALE NUMBER := '';
    V_THRESHOLD_MIN_ALERT NUMBER;        

    BEGIN

    Select KPI_DEF_ID INTO V_KPI_DEF_ID FROM KPI_LOGS WHERE KPI_LOG_ID = IN_KPI_LOG_ID;
    Select KT.KPI_TYPE_ID INTO V_KPI_TYPE_ID FROM KPI_DEFINITION KD JOIN KPI_TYPE KT ON KD.KPI_TYPE = KT.KPI_TYPE_ID WHERE KD.KPI_DEF_ID = V_KPI_DEF_ID;
    Select THRESHOLD_MAX_VAL INTO V_KPI_THRESHOLD_MAX_VALE FROM KPI_DEFINITION WHERE KPI_DEF_ID = V_KPI_DEF_ID;
    Select THRESHOLD_MIN_VAL INTO V_KPI_THRESHOLD_MIN_VALE FROM KPI_DEFINITION WHERE KPI_DEF_ID = V_KPI_DEF_ID;
    Select THRESHOLD_MIN_ALERT INTO V_THRESHOLD_MIN_ALERT FROM KPI_DEFINITION WHERE KPI_DEF_ID = V_KPI_DEF_ID;
    Select THRESHOLD_Max_ALERT INTO V_THRESHOLD_MAX_ALERT FROM KPI_DEFINITION WHERE KPI_DEF_ID = V_KPI_DEF_ID;

        BODY := 'ALERT TIMESTAMP : ' || to_char(IN_ALERT_LOGS_TIMESTAMP,'DD.MM.YYYY HH24:MI') || Chr(13) || Chr(10);

        IF ((V_KPI_TYPE_ID = 18) OR (V_KPI_TYPE_ID = 19))  THEN  
        BODY := BODY || 'Minimum Threshold' || if (V_THRESHOLD_MIN_ALERT = Y) then '(Alert Configured)' END IF; || V_KPI_THRESHOLD_MIN_VALE || Chr(13);            
        END IF;

       RETURN BODY;
    END BUILD_ALERT_EMAIL_BODY;

---

以下IF-END IF块中存在问题：

IF (V_THRESHOLD_MIN_ALERT = Y) 
    THEN
      '(Alert Configured)'
    END IF;
    || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

您需要将值分配给变量

“Y”是一个字符串，不是布尔值。必须将其括在单引号内

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

或者，您可以使用大小写表达式：

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

而且

BODY是一个名称。最好使用不同的名称

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

---

以下IF-END IF块中存在问题：

IF (V_THRESHOLD_MIN_ALERT = Y) 
    THEN
      '(Alert Configured)'
    END IF;
    || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

您需要将值分配给变量

“Y”是一个字符串，不是布尔值。必须将其括在单引号内

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

或者，您可以使用大小写表达式：

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

而且

BODY是一个名称。最好使用不同的名称

比如说,

IF (V_THRESHOLD_MIN_ALERT = 'Y') 
    THEN
      BODY := BODY||'(Alert Configured)';
ELSE
    BODY := BODY|| V_KPI_THRESHOLD_MIN_VALE || Chr(13);
END IF;

BODY := BODY || 'Minimum Threshold' ||
        CASE
        WHEN V_THRESHOLD_MIN_ALERT = 'Y' THEN
           'Alert Configured'
        END || V_KPI_THRESHOLD_MIN_VALE || Chr(13);

v_body VARCHAR2(4000) := '';

---

编辑：也将

BODY

更改为上面建议的其他变量

更改IF-ELSE逻辑，如下所示

             IF ((V_KPI_TYPE_ID = 18) OR (V_KPI_TYPE_ID = 19))  THEN  
               IF V_THRESHOLD_MIN_ALERT = Y then
                     BODY := BODY || 'Minimum Threshold' ||  '(Alert Configured)' || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
                else 
                     BODY := BODY || 'Minimum Threshold' || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
                end if;
             end if;

---

编辑：也将

BODY

更改为上面建议的其他变量

更改IF-ELSE逻辑，如下所示

             IF ((V_KPI_TYPE_ID = 18) OR (V_KPI_TYPE_ID = 19))  THEN  
               IF V_THRESHOLD_MIN_ALERT = Y then
                     BODY := BODY || 'Minimum Threshold' ||  '(Alert Configured)' || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
                else 
                     BODY := BODY || 'Minimum Threshold' || V_KPI_THRESHOLD_MIN_VALE || Chr(13);
                end if;
             end if;

---

当我使用decode时，我得到的错误是错误（1405,45）：PLS-00204：函数或伪列“decode”可以在SQL语句中使用only@Rahul抱歉

DECODE

仅适用于SQL，不适用于PL/SQL。请使用

CASE

或

IF-ELSE

。使用DECODE时，请参阅UDPATE我将错误作为错误获取（1405,45）：PLS-00204:函数或伪列“DECODE”可在SQL语句中使用only@Rahul抱歉

DECODE

仅适用于SQL，不适用于PL/SQL。请使用

CASE

或

IF-ELSE

。请参阅udpate