miklosgergely commented on a change in pull request #732: HIVE-22010 - Clean up
ShowCreateTableOperation
URL: https://github.com/apache/hive/pull/732#discussion_r306674949
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File path:
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/creation/ShowCreateTableOperation.java
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@@ -73,198 +82,207 @@ public ShowCreateTableOperation(DDLOperationContext
context, ShowCreateTableDesc
public int execute() throws HiveException {
// get the create table statement for the table and populate the output
try (DataOutputStream outStream = DDLUtils.getOutputStream(new
Path(desc.getResFile()), context)) {
- return showCreateTable(outStream);
+ Table table = context.getDb().getTable(desc.getTableName(), false);
+ String command = table.isView() ?
+ getCreateViewCommand(table) :
+ getCreateTableCommand(table);
+ outStream.write(command.getBytes(StandardCharsets.UTF_8));
+ return 0;
+ } catch (IOException e) {
+ LOG.info("show create table: ", e);
+ return 1;
} catch (Exception e) {
throw new HiveException(e);
}
}
- private int showCreateTable(DataOutputStream outStream) throws HiveException
{
- boolean needsLocation = true;
- StringBuilder createTabCommand = new StringBuilder();
+ private static final String CREATE_VIEW_COMMAND = "CREATE VIEW `%s` AS %s";
- Table tbl = context.getDb().getTable(desc.getTableName(), false);
- List<String> duplicateProps = new ArrayList<String>();
- try {
- needsLocation = CreateTableOperation.doesTableNeedLocation(tbl);
+ private String getCreateViewCommand(Table table) {
+ return String.format(CREATE_VIEW_COMMAND, desc.getTableName(),
table.getViewExpandedText());
+ }
- if (tbl.isView()) {
- String createTabStmt = "CREATE VIEW `" + desc.getTableName() + "` AS "
+ tbl.getViewExpandedText();
- outStream.write(createTabStmt.getBytes(StandardCharsets.UTF_8));
- return 0;
- }
+ private static final String CREATE_TABLE_TEMPLATE =
+ "CREATE <" + TEMPORARY + "><" + EXTERNAL + ">TABLE `<" + NAME + ">`(\n" +
+ "<" + LIST_COLUMNS + ">)\n" +
+ "<" + COMMENT + ">\n" +
+ "<" + PARTITIONS + ">\n" +
+ "<" + BUCKETS + ">\n" +
+ "<" + SKEWED + ">\n" +
+ "<" + ROW_FORMAT + ">\n" +
+ "<" + LOCATION_BLOCK + ">" +
+ "TBLPROPERTIES (\n" +
+ "<" + PROPERTIES + ">)\n";
- createTabCommand.append("CREATE <" + TEMPORARY + "><" + EXTERNAL +
">TABLE `");
- createTabCommand.append(desc.getTableName() + "`(\n");
- createTabCommand.append("<" + LIST_COLUMNS + ">)\n");
- createTabCommand.append("<" + TBL_COMMENT + ">\n");
Review comment:
They are still there, just removed the unnecessary TBL_ prefix - they are
all for the table :)
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