如何更正要在python中执行的sql查询？

Question

I have one SQL query which I have to execute through python. I have made connection with MYSQL but query format is not up to the mark.

Can you please help me to convert query in correct format for python.

query:

select trim(CONCAT_WS('|',"Master Job Name","Seq","TableName","Source File Name Lnd","landingdfname","TargetPath","query1","Execution Sequence")) FROM DUAL

i ran the code-

with db.cursor() as cur:
    query_meta = ("select trim(CONCAT_WS('|',Master Job Name,Seq,TableName,Source File Name Lnd,landingdfname,TargetPath,query1,Execution Sequence)) FROM DUAL")
    res = cur.execute(query_meta)
    res = cur.fetchall()

error -

pymysql.err.ProgrammingError: (1064, u"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Name,Seq,TableName,Source File Name Lnd,landingdfname,TargetPath,query1,Executio' at line 1")

Answer 1

Try the following:

cursor.execute("select trim(CONCAT_WS('|','Master Job Name','Seq','TableName','Source File Name Lnd','landingdfname','TargetPath','query1','Execution Sequence')) FROM DUAL")

Query format is this:

SELECT 
    CONCAT_WS(',', input_string1, input_string2,...)
FROM 
    table_name