SQLite syntax using the Mono.Data.SqliteClient library - sql

Question

I'm writing an inventory system in Unity 5.4 using SQLite and I can't figure out the syntax or find a good example anywhere. Ideas?
public void GetInventory(string _user, string _container) {
ExecuteSQL("SELECT User (Name), Modifier (ModName), Property (PropName) " +
"FROM User " +
"[INNER] JOIN Ownership " +
"[INNER] JOIN Container " +
"[INNER] JOIN Inventory " +
"[INNER] JOIN Item " +
"[INNER] JOIN Property " +
"[INNER] JOIN Modifier " +
"ON User (UserID) = Ownership (UserID) " +
"AND Ownership (ContainerID) = Container (ContainerID) " +
"AND Container (ContainerID) = Inventory (ContainerID) " +
"AND Inventory (ItemID) = Item (ItemID) " +
"AND Item (PropertyID) = Property (PropertyID) " +
"AND Item (ModifierID) = Modifier (ModifierID) " +
"WHERE User (Name) = '" + _user + "' AND Container (ContainerName) = '" + _container + "'", false);
}
I've tested the function with simpler commands and it works fine. And I've tested the function in a DB manager.
I'm not familiar with this flavor of the SQLite syntax and I can't find a good example anywhere. Can anyone point out where this is going wrong?
The error I'm getting is "No such function: User"

Answer 1

Your query syntax is off. This is how you should write this query:
SELECT t1.name,
t7.ModName,
t6.PropName
FROM User t1
INNER JOIN Ownership t2
ON t1.UserID = t2.UserID
INNER JOIN Container t3
t2.ContainerID = t3.ContainerID
INNER JOIN Inventory t4
ON t3.ContainerID = t4.ContainerID
INNER JOIN Item t5
ON t4.ItemID = t5.ItemID
INNER JOIN Property t6
ON t5.PropertyID = t6.PropertyID
INNER JOIN Modifier t7
ON t5.ModifierID = t7.ModifierID
WHERE t1.Name = '" + _user + "' AND
t3.ContainerName = '" + _container + "'"
I've never worked with SQLite in .NET, but that doesn't matter because your syntax doesn't follow anything I know. By the way, your immediate error was probably caused by this:
SELECT User (Name)
SQLite thinks you are trying to call a function named User. Other major problems included putting all the ON clauses together after the joins. The ON clause needs to appear after each join.