Rename AlterOperation -> AlterTableOperation

Since other ALTER statements will have separate sub-commands.

src/sqlast/ddl.rs

@@ -4,18 +4,18 @@ use super::{ASTNode, SQLIdent, SQLObjectName};
 
 /// An `ALTER TABLE` (`SQLStatement::SQLAlterTable`) operation
 #[derive(Debug, Clone, PartialEq)]
-pub enum AlterOperation {
+pub enum AlterTableOperation {
     /// `ADD <table_constraint>`
     AddConstraint(TableConstraint),
-    /// TODO: implement `DROP CONSTRAINT name`
+    /// TODO: implement `DROP CONSTRAINT <name>`
     DropConstraint { name: SQLIdent },
 }
 
-impl ToString for AlterOperation {
+impl ToString for AlterTableOperation {
     fn to_string(&self) -> String {
         match self {
-            AlterOperation::AddConstraint(constraint) => format!("ADD {}", constraint.to_string()),
-            AlterOperation::DropConstraint { name } => format!("DROP CONSTRAINT {}", name),
+            AlterTableOperation::AddConstraint(c) => format!("ADD {}", c.to_string()),
+            AlterTableOperation::DropConstraint { name } => format!("DROP CONSTRAINT {}", name),
         }
     }
 }

src/sqlast/mod.rs

@@ -20,7 +20,7 @@ mod sql_operator;
 mod sqltype;
 mod value;
 
-pub use self::ddl::{AlterOperation, TableConstraint};
+pub use self::ddl::{AlterTableOperation, TableConstraint};
 pub use self::query::{
     Cte, Fetch, Join, JoinConstraint, JoinOperator, SQLOrderByExpr, SQLQuery, SQLSelect,
     SQLSelectItem, SQLSetExpr, SQLSetOperator, TableFactor,
@@ -405,7 +405,7 @@ pub enum SQLStatement {
     SQLAlterTable {
         /// Table name
         name: SQLObjectName,
-        operation: AlterOperation,
+        operation: AlterTableOperation,
     },
     /// DROP TABLE
     SQLDrop {

src/sqlparser.rs

@@ -974,7 +974,7 @@ impl Parser {
         let table_name = self.parse_object_name()?;
         let operation = if self.parse_keyword("ADD") {
             if let Some(constraint) = self.parse_optional_table_constraint()? {
-                AlterOperation::AddConstraint(constraint)
+                AlterTableOperation::AddConstraint(constraint)
             } else {
                 return self.expected("a constraint in ALTER TABLE .. ADD", self.peek_token());
             }

tests/sqlparser_common.rs

@@ -758,7 +758,7 @@ fn parse_alter_table_constraints() {
         match verified_stmt(&format!("ALTER TABLE tab ADD {}", constraint_text)) {
             SQLStatement::SQLAlterTable {
                 name,
-                operation: AlterOperation::AddConstraint(constraint),
+                operation: AlterTableOperation::AddConstraint(constraint),
             } => {
                 assert_eq!("tab", name.to_string());
                 assert_eq!(constraint_text, constraint.to_string());