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Update extra columns on existing rows

This commit is contained in:
Peter J. Holzer 2022-07-18 15:58:39 +02:00
parent 2665e56e6f
commit faf4770c5d
1 changed files with 36 additions and 22 deletions
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58
src/procrusql/__init__.py
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@ -73,32 +73,46 @@ class HaveData(Node):
self.result = csr.fetchall() self.result = csr.fetchall()
log_check.info("Got %d rows", len(self.result)) log_check.info("Got %d rows", len(self.result))
if self.result: if self.result:
extra_columns = list(self.extra.keys())
for c in extra_columns:
if self.result[0][c] != self.extra[c]:
log_action.info("Updating %s: %s <- %s", key_values, c, self.extra[c])
q = sql.SQL(
"update {table} set {column}={placeholder} where {key_check}"
).format(
table=sql.Identifier(self.table),
column=sql.Identifier(c),
placeholder=sql.Placeholder(),
key_check=key_check,
)
csr.execute(q, [self.extra[c]] + key_values)
self.result[0][c] = self.extra[c]
self.set_order() self.set_order()
self.ok = True self.ok = True
log_state.info("%s is now ok", self.name) log_state.info("%s is now ok", self.name)
return return
else:
extra_values = [v.resolve() if isinstance(v, Ref) else v for v in self.extra.values()] extra_values = [v.resolve() if isinstance(v, Ref) else v for v in self.extra.values()]
columns = list(self.key.keys()) + list(self.extra.keys()) columns = list(self.key.keys()) + list(self.extra.keys())
values = key_values + extra_values values = key_values + extra_values
q = sql.SQL( q = sql.SQL(
"insert into {table}({columns}) values({placeholders}) returning *" "insert into {table}({columns}) values({placeholders}) returning *"
).format( ).format(
table=sql.Identifier(self.table), table=sql.Identifier(self.table),
columns=sql.SQL(", ").join([sql.Identifier(x) for x in columns]), columns=sql.SQL(", ").join([sql.Identifier(x) for x in columns]),
placeholders=sql.SQL(", ").join([sql.Placeholder() for x in columns]), placeholders=sql.SQL(", ").join([sql.Placeholder() for x in columns]),
) )
log_action.info("Inserting data") log_action.info("Inserting data")
csr.execute(q, values) csr.execute(q, values)
self.result = csr.fetchall() self.result = csr.fetchall()
log_action.info("Got %d rows", len(self.result)) log_action.info("Got %d rows", len(self.result))
if self.result: if self.result:
self.set_order() self.set_order()
self.ok = True self.ok = True
log_state.info("%s is now ok", self.name) log_state.info("%s is now ok", self.name)
return return
# We shouldn't get here. Either the insert succeeded, or it raised an # We shouldn't get here. Either the insert succeeded, or it raised an
# exception. Success with 0 rows should not happen. # exception. Success with 0 rows should not happen.
raise RuntimeError("Unreachable code reached") raise RuntimeError("Unreachable code reached")
class HaveTable(Node): class HaveTable(Node):