jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fastRows iterator doco updated to clarify what happens

Browse source 
when break a fastRows loop
This commit is contained in:
JamesP 2015-09-05 11:47:28 +10:00
commit 5b11ce27c4
1 changed files with 7 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

10
lib/impure/db_mysql.nim
View file

@ -140,9 +140,13 @@ proc properFreeResult(sqlres: mysql.PRES, row: cstringArray) =
iterator fastRows*(db: DbConn, query: SqlQuery, iterator fastRows*(db: DbConn, query: SqlQuery,
args: varargs[string, `$`]): Row {.tags: [FReadDB].} = args: varargs[string, `$`]): Row {.tags: [FReadDB].} =
## executes the query and iterates over the result dataset. This is very ## executes the query and iterates over the result dataset.
## fast, but potenially dangerous: If the for-loop-body executes another ##
## query, the results can be undefined. For MySQL this is the case!. ## This is very fast, but potenially dangerous. Use this iterator only
## if you require ALL the rows.
##
## Breaking the fastRows() iterator during a loop will cause the next
## database query to raise an [EDb] exception ``Commands out of sync``.
rawExec(db, query, args) rawExec(db, query, args)
var sqlres = mysql.useResult(db) var sqlres = mysql.useResult(db)
if sqlres != nil: if sqlres != nil: