Generalize positive tests

Author: yoavcloud

tests/sqlparser_common.rs

@@ -5064,6 +5064,9 @@ fn parse_alter_table_alter_column_type() {
         _ => unreachable!(),
     }
 
+    let dialects = all_dialects_where(|d| d.supports_alter_column_type_without_set());
+    dialects.verified_stmt(&format!("{alter_stmt} ALTER COLUMN is_active TYPE TEXT"));
+
     let dialects = all_dialects_except(|d| d.supports_alter_column_type_without_set());
     let res =
         dialects.parse_sql_statements(&format!("{alter_stmt} ALTER COLUMN is_active TYPE TEXT"));
@@ -5072,6 +5075,11 @@ fn parse_alter_table_alter_column_type() {
         res.unwrap_err()
     );
 
+    let dialects = all_dialects_where(|d| d.supports_alter_column_type_using());
+    dialects.verified_stmt(&format!(
+        "{alter_stmt} ALTER COLUMN is_active SET DATA TYPE TEXT USING 'text'"
+    ));
+
     let dialects = all_dialects_except(|d| d.supports_alter_column_type_using());
     let res = dialects.parse_sql_statements(&format!(
         "{alter_stmt} ALTER COLUMN is_active SET DATA TYPE TEXT USING 'text'"

tests/sqlparser_redshift.rs

@@ -402,8 +402,3 @@ fn parse_extract_single_quotes() {
 fn parse_string_literal_backslash_escape() {
     redshift().one_statement_parses_to(r#"SELECT 'l\'auto'"#, "SELECT 'l''auto'");
 }
-
-#[test]
-fn test_alter_column_type() {
-    redshift().verified_stmt("ALTER TABLE customers ALTER COLUMN email TYPE TEXT");
-}