A higher level ODBC database wrapper.

This is the same interface that is implemented for other databases.

This has NOT yet been (extensively) tested against ODBC drivers for Teradata, Oracle, Sybase, MSSqlvSvr, et. al. databases.

Currently all queries are ANSI calls, not Unicode.

See also: db_postgres, db_sqlite, db_mysql.

Parameter substitution

All db_* modules support the same form of parameter substitution. That is, using the ? (question mark) to signify the place where a value should be placed. For example:

sql"INSERT INTO myTable (colA, colB, colC) VALUES (?, ?, ?)"

Examples

Opening a connection to a database

import db_odbc
var db = open("localhost", "user", "password", "dbname")
db.close()

Creating a table

db.exec(sql"DROP TABLE IF EXISTS myTable")
db.exec(sql("""CREATE TABLE myTable (
                 id integer,
                 name varchar(50) not null)"""))

Inserting data

db.exec(sql"INSERT INTO myTable (id, name) VALUES (0, ?)",
        "Andreas")

Large example

import db_odbc, math

var theDb = open("localhost", "nim", "nim", "test")

theDb.exec(sql"Drop table if exists myTestTbl")
theDb.exec(sql("create table myTestTbl (" &
    " Id    INT(11)     NOT NULL AUTO_INCREMENT PRIMARY KEY, " &
    " Name  VARCHAR(50) NOT NULL, " &
    " i     INT(11), " &
    " f     DECIMAL(18,10))"))

theDb.exec(sql"START TRANSACTION")
for i in 1..1000:
  theDb.exec(sql"INSERT INTO myTestTbl (name,i,f) VALUES (?,?,?)",
        "Item#" & $i, i, sqrt(i.float))
theDb.exec(sql"COMMIT")

for x in theDb.fastRows(sql"select * from myTestTbl"):
  echo x

let id = theDb.tryInsertId(sql"INSERT INTO myTestTbl (name,i,f) VALUES (?,?,?)",
        "Item#1001", 1001, sqrt(1001.0))
echo "Inserted item: ", theDb.getValue(sql"SELECT name FROM myTestTbl WHERE id=?", id)

theDb.close()