Adding support for MonetDB

This commit is contained in:
Miroslav Stampar
2020-01-17 17:14:41 +01:00
parent 1cfe370276
commit 1087396d88
23 changed files with 460 additions and 18 deletions

View File

@@ -648,7 +648,7 @@ class Agent(object):
elif fieldsNoSelect:
concatenatedQuery = "CONCAT('%s',%s,'%s')" % (kb.chars.start, concatenatedQuery, kb.chars.stop)
elif Backend.getIdentifiedDbms() in (DBMS.PGSQL, DBMS.ORACLE, DBMS.SQLITE, DBMS.DB2, DBMS.FIREBIRD, DBMS.HSQLDB, DBMS.H2):
elif Backend.getIdentifiedDbms() in (DBMS.PGSQL, DBMS.ORACLE, DBMS.SQLITE, DBMS.DB2, DBMS.FIREBIRD, DBMS.HSQLDB, DBMS.H2, DBMS.MONETDB):
if fieldsExists:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.chars.start, 1)
concatenatedQuery += "||'%s'" % kb.chars.stop
@@ -941,6 +941,16 @@ class Agent(object):
limitStr = queries[Backend.getIdentifiedDbms()].limit.query % (num, 1)
limitedQuery += " %s" % limitStr
elif Backend.getIdentifiedDbms() in (DBMS.MONETDB,):
if query.startswith("SELECT ") and field is not None and field in query:
original = query.split("SELECT ", 1)[1].split(" FROM", 1)[0]
for part in original.split(','):
if re.search(r"\b%s\b" % re.escape(field), part):
_ = re.sub(r"SELECT.+?FROM", "SELECT %s AS z,row_number() over() AS y FROM" % part, query, 1)
replacement = "SELECT x.z FROM (%s)x WHERE x.y-1=%d" % (_, num)
limitedQuery = replacement
break
elif Backend.isDbms(DBMS.HSQLDB):
match = re.search(r"ORDER BY [^ ]+", limitedQuery)
if match: