[tarantool-patches] Re: [PATCH v6 3/4] sql: space_def* instead of Table* in Expr

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

> Probably, you have missed some word (‘use’, ‘replace’ or whatever)
> 
> Sorry, but I can’t parse this commit message. Lets dive a little bit into details
> and explain what this patch *really* does. Such as:
> “Move affinity filed to struct field in order to bla-bla”.
> 
> The rest is almost okay, a few minor remarks.
```
    sql: space_def* instead of Table* in Expr
    
    Changed Table pointer to space_def in Expr structure.
    This makes able to resolve self reference in DDL before
    the table object is created.
    
    Part of #3272.
```
> I would better use enum affinity_type than char.
@@ -1468,7 +1468,7 @@ int tarantoolSqlite3MakeTableFormat(Table *pTable, void *buf)
-                       char affinity = def->fields[i].affinity;
+                       enum affinity_type affinity = def->fields[i].affinity;

@@ -1594,7 +1594,7 @@ int tarantoolSqlite3MakeIdxParts(SqliteIndex *pIndex, void *buf)
-                       char affinity = def->fields[col].affinity;
+                       enum affinity_type affinity = def->fields[col].affinity;

@@ -1801,8 +1801,10 @@ xferOptimization(Parse * pParse, /* Parser context */
-               char pdest_affinity = pDest->def->fields[i].affinity;
-               char psrc_affinity = pSrc->def->fields[i].affinity;
+               enum affinity_type pdest_affinity =
+                       pDest->def->fields[i].affinity;
+               enum affinity_type psrc_affinity =
+                       pSrc->def->fields[i].affinity;


> If tab1 is what?

-               /* The tab2 must be NOT NULL if tab1 is */

Invalid with introducing is_nullable.

> Wait, why did you delete assert which had been introduced in the previous patch?
Because I've changed func. prototype.