diff --git a/migration.sql b/migration.sql
index 9baeb46..21ec6fd 100644
--- a/migration.sql
+++ b/migration.sql
@@ -119,4 +119,9 @@ CLUSTER banking_stage_results_2.blocks using blocks_pkey;
 VACUUM FULL banking_stage_results_2.blocks;
 -- optional
 CLUSTER banking_stage_results_2.transaction_slot using idx_transaction_slot_timestamp;
-VACUUM FULL banking_stage_results_2.transaction_slot;
\ No newline at end of file
+VACUUM FULL banking_stage_results_2.transaction_slot;
+
+ALTER TABLE banking_stage_results_2.transactions ALTER COLUMN signature TYPE TEXT;
+
+CLUSTER banking_stage_results_2.accounts_map_transaction using accounts_map_transaction_pkey;
+
diff --git a/src/postgres.rs b/src/postgres.rs
index 255c5b6..2fa8ef2 100644
--- a/src/postgres.rs
+++ b/src/postgres.rs
@@ -134,7 +134,7 @@ impl PostgresSession {
                 format!(
                     r#"
         CREATE TEMP TABLE {}(
-            signature char(88)
+            signature TEXT
         );
         "#,
                     temp_table
@@ -184,7 +184,7 @@ impl PostgresSession {
             .execute(
                 format!(
                     "CREATE TEMP TABLE {}(
-            key char(44)
+            key TEXT
         );",
                     temp_table
                 )
@@ -231,7 +231,7 @@ impl PostgresSession {
             .execute(
                 format!(
                     "CREATE TEMP TABLE {}(
-            sig char(88),
+            sig TEXT,
             slot BIGINT,
             error_code INT,
             count INT,
@@ -307,8 +307,8 @@ impl PostgresSession {
             .execute(
                 format!(
                     "CREATE TEMP TABLE {}(
-            account_key char(44),
-            signature char(88),
+            account_key TEXT,
+            signature TEXT,
             is_writable BOOL,
             is_signer BOOL,
             is_atl BOOL
@@ -381,7 +381,7 @@ impl PostgresSession {
             .execute(
                 format!(
                     "CREATE TEMP TABLE {}(
-            signature char(88),
+            signature TEXT,
             processed_slot BIGINT,
             is_successful BOOL,
             cu_requested BIGINT,
@@ -470,7 +470,7 @@ impl PostgresSession {
             .execute(
                 format!(
                     "CREATE TEMP TABLE {}(
-            account_key CHAR(44),
+            account_key TEXT,
             slot BIGINT,
             is_write_locked BOOL,
             total_cu_requested BIGINT,