我试图使用cx_Oracle将参数传递到SQL“IN”语句。这给出了正确的结果:
sql = """select * from
(select level numb from dual connect by level <= 4)
where numb = :var"""
print([row[0] for row in cur.execute(sql, (1,))])
Output: [1]
但是我无法弄清楚如何使用“IN”语句。
sql = """select * from
(select level numb from dual connect by level <= 4)
where numb in :var"""
print([row[0] for row in cur.execute(sql, (1, 2))])
Output: cx_Oracle.DatabaseError: ORA-01036: illegal variable name/number
我尝试过IN语句的变体,还使用字典传递参数。
使用单个值或文字时,SQL中的IN
子句需要括在括号中的值。由于您传递了两个参数,因此在paranetheses中包含两个占位符。
sql = """select * from
(select level numb from dual connect by level <= 4)
where numb in (:1, :2)"""
print([row[0] for row in cur.execute(sql, (1, 2))])