On 05/25/2018 06:52 AM, Adrian Klaver wrote:
On 05/25/2018 02:04 AM, tango ward wrote:


I want to insert data from mysql into a table in postgresql. I want to check when the subjectcode contains PE or NSTP so I can assign True or False to another column in destination DB.


# Source data:

  # Source data: MySQL
    curr_msql.execute(''' SELECT code, subjectname
                           FROM test_subj ''')

# Destination
for row in curr_msql:
             curr_psql.execute(''' INSERT INTO subs (
                                                     created, modified,
                                                     subjcode, subjname,
                                                     is_pe_or_nstp)

                                   VALUES (current_timestamp, current_timestamp,
                                           %s, %s,
                                           CASE
         WHEN code like '%%PE%%' or code like '%%NSTP%%'

Shouldn't the above be?:

subjcode like '%%PE%%' or subjcode like '%%NSTP%%'

Turns out that won't work as you cannot refer to a column in the CASE:

cur.execute("insert into cell_per(category, cell_per, season, plant_type, short_category) values('herb test', 1, 'annual', CASE WHEN category like '%%herb%%' THEN 'herb' ELSE 'flower' END, 'ht' )")

ProgrammingError: column "category" does not exist
LINE 1: ...gory)  values('herb test', 1, 'annual', CASE WHEN category l...
                                                             ^
HINT: There is a column named "category" in table "cell_per", but it cannot be referenced from this part of the query.


This works:

cur.execute("insert into cell_per(category, cell_per, season, plant_type, short_category) values(%s, 1, 'annual', CASE WHEN %s like '%%herb%%' THEN 'herb' ELSE 'flower' END, 'ht' )", ('herb test', 'herb test'))


So change code to row['code']?




         THEN True
         ELSE False
     END) ''', (row['code'], row['subjectname']))

I am getting TypeError: not all arguments converted during string formatting.

Any advice pls?










--
Adrian Klaver
adrian.kla...@aklaver.com

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