improved odps sql parser. support change column. issue #1455

2023-03-04 19:17:16 +00:00 · 2016-10-24 01:23:56 +08:00
parent 5892051cf8
commit 0caef08940
3 changed files with 28 additions and 3 deletions
@@ -881,6 +881,22 @@ public class SQLStatementParser extends SQLParser {
                    } else {
                        throw new ParserException("TODO " + lexer.token() + " " + lexer.stringVal());
                    }
+                } else if (identifierEquals("CHANGE")) {
+                    lexer.nextToken();
+                    accept(Token.COLUMN);
+                    SQLName columnName = this.exprParser.name();
+                    accept(Token.COMMENT);
+                    SQLExpr comment = this.exprParser.primary();
+
+                    SQLColumnDefinition columnDefinition = new SQLColumnDefinition();
+                    columnDefinition.setName(columnName);
+                    columnDefinition.setComment(comment);
+
+                    SQLAlterTableAlterColumn changeColumn = new SQLAlterTableAlterColumn();
+
+                    changeColumn.setColumn(columnDefinition);
+
+                    stmt.addItem(changeColumn);
                } else if (lexer.token() == Token.WITH) {
                    lexer.nextToken();
                    acceptIdentifier("NOCHECK");