pyodbc调用存储过程的参数名称;数据类型问题

Question

当运行cursor_insert.execute（sql，params）时，我不断收到“[SQL ERROR]将数据类型nvarchar转换为float时出错”，即使我的源和目标db表的数据定义为float，nvarchar和nvarchar以及我的存储过程。

将我的参数设置为一个名为'params'的新变量，导致数据类型发生这种变化？如果是这样，我该如何解决呢？ （在阅读一些Python文档时，它不应该更改数据类型，对吗？）

# Create cursor associated with connection
cursor=conn.cursor()
cursor_select = conn.cursor()
cursor_insert = conn.cursor()

if conn:
    print('***** Connected to DCPWDBS289 *****')

select_str="SELECT TOP 5 Incident_ID,Incident_Type,Priority FROM 
incidents_all WHERE incidents_all.Status NOT IN ('Closed','Resolved')"

cursor_select.execute(select_str)

while True:

    row = cursor_select.fetchone()
    if not row:
        break
    print(' Row:     ', row)

    IncIncident_ID      = row[0]    # Float
    IncIncident_Type    = row[1]    # Str
    IncPriority         = row[2]    # Str

    sql = """EXEC ITSM.dbo.ITSM_LOAD @IncIncident_ID=?, 
    @IncIncident_Type=?,@IncPriority=?"""

    params = ('IncIncident_ID','IncIncident_Type','IncPriority')

    cursor_insert.execute(sql,params)

del cursor_insert
cursor.commit()
conn.close()

---

Answer 1

你没有传递parameter值，而是传递一个字符串文字，试试这个：

# Create cursor associated with connection
cursor=conn.cursor()
cursor_select = conn.cursor()
cursor_insert = conn.cursor()

if conn:
    print('***** Connected to DCPWDBS289 *****')

select_str="SELECT TOP 5 Incident_ID,Incident_Type,Priority FROM 
incidents_all WHERE incidents_all.Status NOT IN ('Closed','Resolved')"

cursor_select.execute(select_str)

while True:

    row = cursor_select.fetchone()
    if not row:
        break
    print(' Row:     ', row)

    IncIncident_ID      = row[0]    # Float
    IncIncident_Type    = row[1]    # Str
    IncPriority         = row[2]    # Str

    sql = """EXEC ITSM.dbo.ITSM_LOAD @IncIncident_ID=?, 
    @IncIncident_Type=?,@IncPriority=?"""

    params = (IncIncident_ID, IncIncident_Type, IncPriority)

    cursor_insert.execute(sql,params)

del cursor_insert
cursor.commit()
conn.close()