所以我一直在这里尝试这个查询:
SELECT
account.customer_client_code,
account.client_account_number,
account.first_name,
account.last_name,
debt_trans.trans_date,
debt_trans.debt_id,
debt_trans.debt_trans_id,
debt_trans.receiver,
debt_trans.type_name,
debt_trans.client_id,
debt_trans.amount
FROM
debt_trans
INNER JOIN
account
ON
account.client_id= debt_trans.client_id
/* Both fields here are of int8 datatype */
WHERE
debt_trans.customer_id = 'CMC'
and
account.customer_client_code like ('UBC2903','UBCO')
and
debt_trans.type_name='Credit Card'
and
debt_trans.operator = 'RECEIVED'
/*All of these fields here are of varchar datatype */
但我已经检查并仔细检查了所有数据类型，不应该有任何类型转换。我收到的错误消息如下:
“错误:运算符不存在:字符变化 ~~ 记录提示:没有运算符匹配给定的名称和参数类型。您可能需要添加显式类型转换。位置:492”
有什么问题的提示吗？
最佳答案
错误消息与此行有关:
account.customer_client_code like ('UBC2903','UBCO')
如果您尝试查看 account.customer_client_code 是否是 'UBC2903' 或 'UBCO' 之一，那么您应该使用IN 运算符:
account.customer_client_code IN ('UBC2903','UBCO')
关于sql - postGreSQL 在数据类型匹配时请求类型转换？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53461056/