graphql-engine/docs/graphql/manual/mutations
Rakesh Emmadi 5bafdce9a3 fix delete mutation returning incorrect data (fix #1794) (fix #1763) (#1827)
From `alpha-40` we've been using a `WHERE` clause to fetch required rows and generate mutation response. This has a few limitations like the requirement of a primary key/unique constraint. This also returns inconsistent data on `delete` mutation as mentioned in #1794. 
Now, we're using `VALUES (..)` (refer [here](https://www.postgresql.org/docs/current/sql-values.html)) expression to form virtual table rows in `SQL` to generate mutation response.

Internal changes:-
- Not to use primary key/unique constraint columns:-
  - Revert back to `ConstraintName` from `TableConstraint` in `TableInfo` type
  - Remove `tcCols` field in `TableConstraint` type
  - Modify `table_info.sql` and `fetchTableMeta` function `SQL`
- A test case to perform `delete` mutation and returning relational objects.
2019-03-22 12:38:42 +05:30
..
delete.rst fix delete mutation returning incorrect data (fix #1794) (fix #1763) (#1827) 2019-03-22 12:38:42 +05:30
index.rst update query/mutation docs pages (#1426) 2019-01-21 14:50:14 +05:30
insert.rst fix delete mutation returning incorrect data (fix #1794) (fix #1763) (#1827) 2019-03-22 12:38:42 +05:30
multiple-mutations.rst add table of contents to docs pages (#1115) 2018-12-03 17:42:24 +05:30
update.rst fix delete mutation returning incorrect data (fix #1794) (fix #1763) (#1827) 2019-03-22 12:38:42 +05:30
upsert.rst fix delete mutation returning incorrect data (fix #1794) (fix #1763) (#1827) 2019-03-22 12:38:42 +05:30