Difference between revisions of "User:Dt192"
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| Line 59: | Line 59: | ||
--------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- | ||
| − | + | display(conn:getlastautoid()) | |
| − | display( | ||
| − | |||
---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ||
| − | results = conn:execute | + | results = conn:execute[[ |
| + | SELECT city,name FROM mySheet WHERE city = 'Hallifax' | ||
| + | ]] | ||
local city,name = results:fetch() | local city,name = results:fetch() | ||
| Line 91: | Line 91: | ||
---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ||
| − | function rows( | + | function rows(conn, query) |
| − | local cursor = assert ( | + | local cursor = assert(conn:execute(query)) |
| − | return function() | + | local res = {} |
| − | return cursor:fetch() | + | return function () |
| + | return cursor:fetch(res, "a") | ||
end | end | ||
end | end | ||
| − | local query = [[ | + | |
| − | for | + | local query = [[ |
| − | print (name, city, id) | + | select * from mySheet WHERE id > 1 AND id < 5 |
| + | ]] | ||
| + | |||
| + | for row in rows(conn, query) do | ||
| + | print(row.name, row.city, row.id) | ||
end | end | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 04:21, 31 January 2024
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So i don't forget again. This is how you sent raw sql to the db and fetch the result
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;
---------------------------------------------------------------------------------------
display(conn:getlastautoid())
----------------------------------------------------------------------------------------
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(conn, query)
local cursor = assert(conn:execute(query))
local res = {}
return function ()
return cursor:fetch(res, "a")
end
end
local query = [[
select * from mySheet WHERE id > 1 AND id < 5
]]
for row in rows(conn, query) do
print(row.name, row.city, row.id)
end