morningman commented on a change in pull request #2800: Support new show
functions syntax to make user search function more conveniently
URL: https://github.com/apache/incubator-doris/pull/2800#discussion_r368301637
##########
File path: fe/src/main/java/org/apache/doris/qe/ShowExecutor.java
##########
@@ -302,44 +304,77 @@ private void handleShowEngines() {
resultSet = new ShowResultSet(showStmt.getMetaData(), rowSet);
}
- // Handle show function
- private void handleShowFunction() throws AnalysisException {
- ShowFunctionStmt showStmt = (ShowFunctionStmt) stmt;
-
+ // Handle show functions
+ private void handleShowFunctions() throws AnalysisException {
+ ShowFunctionsStmt showStmt = (ShowFunctionsStmt) stmt;
Database db = ctx.getCatalog().getDb(showStmt.getDbName());
if (db == null) {
ErrorReport.reportAnalysisException(ErrorCode.ERR_BAD_DB_ERROR,
showStmt.getDbName());
}
- List<Function> functions = db.getFunctions();
+ List<Function> functions = showStmt.getIsBuiltin() ?
ctx.getCatalog().getBuiltinFunctions() :
+ db.getFunctions();
- List<List<String>> rowSet = Lists.newArrayList();
+ List<List<Comparable>> rowSet = Lists.newArrayList();
for (Function function : functions) {
- List<String> row = Lists.newArrayList();
- // signature
- row.add(function.getSignature());
- // return type
- row.add(function.getReturnType().getPrimitiveType().toString());
- // function type
- // intermediate type
- if (function instanceof ScalarFunction) {
- row.add("Scalar");
- row.add("NULL");
- } else {
- row.add("Aggregate");
- AggregateFunction aggFunc = (AggregateFunction) function;
- Type intermediateType = aggFunc.getIntermediateType();
- if (intermediateType != null) {
- row.add(intermediateType.getPrimitiveType().toString());
- } else {
+ List<Comparable> row = Lists.newArrayList();
+ if (showStmt.getIsVerbose()) {
+ // signature
+ row.add(function.getSignature());
+ // return type
+
row.add(function.getReturnType().getPrimitiveType().toString());
+ // function type
+ // intermediate type
+ if (function instanceof ScalarFunction) {
+ row.add("Scalar");
row.add("NULL");
+ } else {
+ row.add("Aggregate");
+ AggregateFunction aggFunc = (AggregateFunction) function;
+ Type intermediateType = aggFunc.getIntermediateType();
+ if (intermediateType != null) {
+
row.add(intermediateType.getPrimitiveType().toString());
+ } else {
+ row.add("NULL");
+ }
}
+ // property
+ row.add(function.getProperties());
+ } else {
+ row.add(function.functionName());
+ }
+
+ // like predicate
+ if (showStmt.getWild() == null ||
showStmt.like(function.functionName())) {
+ rowSet.add(row);
}
- // property
- row.add(function.getProperties());
- rowSet.add(row);
}
+
+ // sort function rows by fisrt column asec
Review comment:
```suggestion
// sort function rows by first column asc
```
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