Difference between revisions of "User:Dt192"

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Line 98: Line 98:
 
end
 
end
  
local query = [[select id,city,name from mySheet WHERE id > 1 AND id < 5]]
+
local query = [[SELECT id,city,name FROM mySheet WHERE id > 1 AND id < 5]]
 
for id,city,name in rows(conn, query) do
 
for id,city,name in rows(conn, query) do
 
   print (name, city, id)
 
   print (name, city, id)

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So i don't forget again. This is how you sent raw sql to the db and fetch the result

luasql manual

mydb = db:create("mydb",
{
  mySheet = {
    name = "", id = 0, city = "",
    _index = { "name" },
    _unique = { "id" },
    _violations = "FAIL"
  }
})

myData = {
  {name="Ixokai", city="Magnagora", id=1},
  {name="Vadi", city="New Celest", id=2},
  {name="Heiko", city="Hallifax", id=3},
  {name="Keneanung", city="Hashan", id=4},
  {name="Carmain", city="Mhaldor", id=5},
  {name="Ixokai", city="Hallifax", id=6},
}

db:add(mydb.mySheet, unpack(myData))
local conn = db.__conn.mydb;
---------------------------------------------------------------------------------------

res = conn:execute("SELECT last_insert_rowid()")
display(res:fetch())
results:close()

----------------------------------------------------------------------------------------

results = conn:execute([[SELECT city,name FROM mySheet WHERE city = 'Hallifax']])

local city,name = results:fetch()
while city do
  print(city,name)
  city,name = results:fetch()
end

results:close()

----------------------------------------------------------------------------------------

results = conn:execute[[
  SELECT * FROM mySheet WHERE name = 'Ixokai'
]]

local res = results:fetch({}, "a")
while res do
  print(res.id, res.city, res.name)
  res = results:fetch(res, "a")
end

results:close()

----------------------------------------------------------------------------------------

function rows(connection, sql_statement)
  local cursor = assert (connection:execute (sql_statement))
  return function()
    return cursor:fetch()
  end
end

local query = [[SELECT id,city,name FROM mySheet WHERE id > 1 AND id < 5]]
for id,city,name in rows(conn, query) do
  print (name, city, id)
end