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Author: KodaiD

core/src/main/java/com/scalar/db/api/Admin.java

@@ -487,7 +487,7 @@ default void addNewColumnToTable(
    * @param table the table name
    * @param columnName the name of the column to drop
    * @throws IllegalArgumentException if the table or column does not exist, or the column is a
-   *     partition key column, clustering key column, or is indexed
+   *     partition key column or clustering key column
    * @throws ExecutionException if the operation fails
    */
   void dropColumnFromTable(String namespace, String table, String columnName)
@@ -503,7 +503,7 @@ void dropColumnFromTable(String namespace, String table, String columnName)
    * @param IfExists if set to true, the column will be dropped only if it exists. If set to false,
    *     it will throw an exception if it does not exist
    * @throws IllegalArgumentException if the table does not exist, or the column is a partition key
-   *     column, clustering key column, or is indexed
+   *     column or clustering key column
    * @throws ExecutionException if the operation fails
    */
   default void dropColumnFromTable(

core/src/main/java/com/scalar/db/common/CheckedDistributedStorageAdmin.java

@@ -313,7 +313,7 @@ public void dropColumnFromTable(String namespace, String table, String columnNam
     if (tableMetadata.getPartitionKeyNames().contains(columnName)
         || tableMetadata.getClusteringKeyNames().contains(columnName)) {
       throw new IllegalArgumentException(
-          CoreError.COLUMN_SPECIFIED_AS_PRIMARY_KEY.buildMessage(
+          CoreError.DROP_PRIMARY_KEY_COLUMN_NOT_SUPPORTED.buildMessage(
               ScalarDbUtils.getFullTableName(namespace, table), columnName));
     }
 

core/src/main/java/com/scalar/db/common/CoreError.java

@@ -678,24 +678,20 @@ public enum CoreError implements ScalarDbError {
       "Mutations across multiple storages are not allowed. Mutations: %s",
       "",
       ""),
-  COLUMN_SPECIFIED_AS_PRIMARY_KEY(
+  DROP_PRIMARY_KEY_COLUMN_NOT_SUPPORTED(
       Category.USER_ERROR,
       "0216",
-      "The column is specified as a primary key. Table: %s; Column: %s",
+      "Primary key columns cannot be dropped. Table: %s; Column: %s",
       "",
       ""),
   COSMOS_DROP_COLUMN_NOT_SUPPORTED(
       Category.USER_ERROR,
       "0217",
-      "Drop column functionality is not supported in Cosmos DB",
+      "Cosmos DB does not support the dropping column feature",
       "",
       ""),
   DYNAMO_DROP_COLUMN_NOT_SUPPORTED(
-      Category.USER_ERROR,
-      "0218",
-      "Drop column functionality is not supported in DynamoDB",
-      "",
-      ""),
+      Category.USER_ERROR, "0218", "DynamoDB does not support the dropping column feature", "", ""),
 
   //
   // Errors for the concurrency error category