Feat(parser): support show create view sql parser.

pisa-proxy/parser/mysql/src/ast/dml.rs

@@ -3139,3 +3139,9 @@ pub enum ShowVariableType {
     Global,
     Session,
 }
+
+#[derive(Debug, Clone)]
+pub struct ShowCreateViewStmt {
+    pub span: Span,
+    pub view_name: String,
+}

pisa-proxy/parser/mysql/src/ast/mod.rs

@@ -45,6 +45,7 @@ pub enum SqlStmt {
     ShowCreateTableStmt(Box<ShowCreateTableStmt>),
     ShowKeysStmt(Box<ShowKeysStmt>),
     ShowVariablesStmt(Box<ShowVariablesStmt>),
+    ShowCreateViewStmt(Box<ShowCreateViewStmt>),
     Start(Start),
     Commit(Commit),
     Rollback(Rollback),

pisa-proxy/parser/mysql/src/grammar.y

@@ -111,6 +111,7 @@ sql_stmt -> SqlStmt:
   | show_create_table_stmt  { SqlStmt::ShowCreateTableStmt($1) }
   | show_keys_stmt     { SqlStmt::ShowKeysStmt($1) }
   | show_variables_stmt     { SqlStmt::ShowVariablesStmt($1) }
+  | show_create_view_stmt     { SqlStmt::ShowCreateViewStmt($1) }
   | start               { SqlStmt::Start($1) }
   | create        { SqlStmt::Create($1) }
 
@@ -6033,6 +6034,16 @@ opt_var_type -> Option<ShowVariableType>:
      | SESSION              { Some(ShowVariableType::Session) }
 ;
 
+show_create_view_stmt -> Box<ShowCreateViewStmt>:
+    'SHOW' 'CREATE' 'VIEW' table_ident
+    {
+        Box::new(ShowCreateViewStmt {
+           span: $span,
+           view_name: $4,
+        })
+    }
+;
+
 start -> Start:
   START TRANSACTION opt_start_transaction_option_list
   {

pisa-proxy/parser/mysql/src/parser.rs

@@ -133,6 +133,7 @@ mod test {
             "SHOW VARIABLES LIKE '%size%';",
             "SHOW GLOBAL VARIABLES LIKE '%size%';",
             "SHOW SESSION VARIABLES LIKE '%size%';",
+            "SHOW CREATE VIEW view_name;",
         ];
 
         let p = Parser::new();