fix: Postgresql syntax (#16)

scripts/sql/create_tables.sql

@@ -6,29 +6,30 @@ CREATE TABLE delegation
     proof             TEXT,
     delegated_weight  BIGINT,
     delegated_block   BIGINT,
-    PRIMARY KEY (token_address,
-                 delegator_address,
+    PRIMARY KEY (delegator_address,
                  delegatee_address)
 );
 CREATE INDEX delegation_index_delegator
     ON delegation (
-                   token_address,
                    delegator_address
         );
+CREATE INDEX delegation_index_delegatee
+    ON delegation (
+                   delegatee_address
+        );
 
 -- Delegators delegate their voting power to Delegatees
 CREATE TABLE delegators
 (
-    delegator_address CHAR(20),
+    delegator_address CHAR(20) PRIMARY KEY,
     trie_root         CHAR(32),
-    delegated_block   BIGINT,
-    PRIMARY KEY delegator_address
+    delegated_block   BIGINT
 );
 
 -- The single supported token's address, with support for contract migration
 CREATE TABLE token
 (
-    contract_address        CHAR(20),
+    contract_address        CHAR(20) PRIMARY KEY,
     delegation_from_block   BIGINT,
     delegated_to_block      BIGINT
 );

src/handler/get-voting-power.ts

@@ -31,8 +31,8 @@ export const handler = async (
         throwError('Missing tokenAddress parameter')
 
     const result = await Database.pool().query({
-        name: 'fetch-delegation-by-token-address',
-        text: 'SELECT * FROM delegation WHERE token_address = $1',
+        name: 'fetch-delegation-by-delegator-address',
+        text: 'SELECT * FROM delegation WHERE delegator_address = $1',
         values: [address]
     })
 

src/handler/mass-delegation.ts

@@ -31,8 +31,8 @@ export const handler = async (
         throwError('Missing tokenAddress parameter')
 
     const result = await Database.pool().query({
-        name: 'fetch-delegation-by-token-address',
-        text: 'SELECT * FROM delegation WHERE token_address = $1',
+        name: 'fetch-delegation-by-delegator-address',
+        text: 'SELECT * FROM delegation WHERE delegator_address = $1',
         values: [address]
     })