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Merge branch 'master' of github.com:Araq/Nimrod

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Araq
2012-11-25 11:03:27 +01:00
committed by ringabout
parent 5e801014fa
commit cc4073fa60
1 changed files with 7 additions and 5 deletions
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12
src/db_mysql.nim
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@@ -14,7 +14,8 @@ import strutils, mysql
type
TDbConn* = PMySQL ## encapsulates a database connection
TRow* = seq[string] ## a row of a dataset
TRow* = seq[string] ## a row of a dataset. NULL database values will be
## transformed always to the empty string.
EDb* = object of EIO ## exception that is raised if a database error occurs
TSqlQuery* = distinct string ## an SQL query string
@@ -111,7 +112,8 @@ iterator FastRows*(db: TDbConn, query: TSqlQuery,
proc getRow*(db: TDbConn, query: TSqlQuery,
args: varargs[string, `$`]): TRow {.tags: [FReadDB].} =
## retrieves a single row.
## retrieves a single row. If the query doesn't return any rows, this proc
## will return a TRow with empty strings for each column.
rawExec(db, query, args)
var sqlres = mysql.UseResult(db)
if sqlres != nil:
@@ -150,9 +152,9 @@ iterator Rows*(db: TDbConn, query: TSqlQuery,
proc GetValue*(db: TDbConn, query: TSqlQuery,
args: varargs[string, `$`]): string {.tags: [FReadDB].} =
## executes the query and returns the result dataset's the first column
## of the first row. Returns "" if the dataset contains no rows. This uses
## `FastRows`, so it inherits its fragile behaviour.
## executes the query and returns the first column of the first row of the
## result dataset. Returns "" if the dataset contains no rows or the database
## value is NULL.
result = ""
for row in FastRows(db, query, args):
result = row[0]