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Relations beetwen tables now its working

master
Sergey Kalinin 2017-03-16 13:00:32 +03:00
parent 51b7e43f95
commit fa3029f48e
1 changed files with 23 additions and 10 deletions
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33
dm.py
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@ -80,26 +80,39 @@ def selectData(tbl):
global tbl_struct_list
#print(tbl_struct_list)
#select docs.doc_name, docs.description, (select CONCAT(last_name, ' ', name, ' ', middle_name) AS user from users where id = docs.users_id) as user from docs
# если юольше 1 поля добавить CONCAT
qwery = "SELECT "
for item in tbl_struct_list:
subqwery = ""
tsl = tbl_struct_list
for item in tsl:
if item[0] == tbl:
for field in item[1]:
qwery = qwery + field + ","
#print(item[2])
#field = item[2][0]
#rel = item[2][1]
#print(field + rel)
for rel in item[2]:
field = rel[0]
field_rel = rel[1][0]
field_replace = rel[1][1]
print(field + "->" + field_rel + "->" + field_replace)
qwery = qwery + "(SELECT " + field_replace + ") AS " + field + ","
field_replace = field_replace.replace(",", ",' ',")
#print(field + "->" + field_rel + "->" + field_replace)
# определяем название таблицы для вложенного запроса
table1 = field_rel.split('.')[0]
field1 = field_rel.split('.')[1]
if table1 == tbl:
table1 = table1 + "_1"
subqwery = tbl + " AS " +table1
else:
subqwery = table1
# составляем подзапрос и подменяем им поле в запросе
subqwery = "(SELECT CONCAT(" + field_replace + ") FROM " + subqwery +" WHERE "+ table1 + "." + field1 +"="+ tbl +"."+ field +") AS " + field
#print(subqwery)
qwery = qwery.replace(field, subqwery)
#print(item[1])
qwery = qwery.rstrip(',') + " FROM " + tbl + " LIMIT 10000"
#c.execute(qwery)
c.execute(qwery)
print(qwery)
#return c.fetchall()
#tsl.clear()
return c.fetchall()
# получаем на вход имя таблицы и возвращаем список заголовков полей
def getTablesStructure(tbl):