[fix](show)show tables should be case insensitive when lowerCaseTable…

…Names is 1 or 2. (#46030) ### What problem does this PR solve? show tables should be case insensitive when lowerCaseTableNames is 1 or 2. Issue Number: close #xxx Related PR: #xxx Problem Summary: ### Release note None
apache · Dec 26, 2024 · 0b08cb3 · 0b08cb3
1 parent 8b9167c
commit 0b08cb3
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Showing 2 changed files with 22 additions and 4 deletions.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/ShowExecutor.java b/fe/fe-core/src/main/java/org/apache/doris/qe/ShowExecutor.java
@@ -861,8 +861,7 @@ private void handleShowTable() throws AnalysisException {
                 .getDbOrAnalysisException(showTableStmt.getDb());
         PatternMatcher matcher = null;
         if (showTableStmt.getPattern() != null) {
-            matcher = PatternMatcherWrapper.createMysqlPattern(showTableStmt.getPattern(),
-                    CaseSensibility.TABLE.getCaseSensibility());
+            matcher = PatternMatcherWrapper.createMysqlPattern(showTableStmt.getPattern(), isShowTablesCaseSensitive());
         }
         for (TableIf tbl : db.getTables()) {
             if (tbl.getName().startsWith(FeConstants.TEMP_MATERIZLIZE_DVIEW_PREFIX)) {
@@ -901,6 +900,13 @@ private void handleShowTable() throws AnalysisException {
         resultSet = new ShowResultSet(showTableStmt.getMetaData(), rows);
     }
 
+    public boolean isShowTablesCaseSensitive() {
+        if (GlobalVariable.lowerCaseTableNames == 0) {
+            return CaseSensibility.TABLE.getCaseSensibility();
+        }
+        return false;
+    }
+
     // Show table status statement.
     private void handleShowTableStatus() throws AnalysisException {
         ShowTableStatusStmt showStmt = (ShowTableStatusStmt) stmt;
@@ -911,8 +917,7 @@ private void handleShowTableStatus() throws AnalysisException {
         if (db != null) {
             PatternMatcher matcher = null;
             if (showStmt.getPattern() != null) {
-                matcher = PatternMatcherWrapper.createMysqlPattern(showStmt.getPattern(),
-                        CaseSensibility.TABLE.getCaseSensibility());
+                matcher = PatternMatcherWrapper.createMysqlPattern(showStmt.getPattern(), isShowTablesCaseSensitive());
             }
             for (TableIf table : db.getTables()) {
                 if (matcher != null && !matcher.match(table.getName())) {

diff --git a/fe/fe-core/src/test/java/org/apache/doris/qe/ShowExecutorTest.java b/fe/fe-core/src/test/java/org/apache/doris/qe/ShowExecutorTest.java
@@ -49,6 +49,7 @@
 import org.apache.doris.catalog.Table;
 import org.apache.doris.catalog.TableIf.TableType;
 import org.apache.doris.common.AnalysisException;
+import org.apache.doris.common.CaseSensibility;
 import org.apache.doris.common.PatternMatcher;
 import org.apache.doris.common.UserException;
 import org.apache.doris.common.jmockit.Deencapsulation;
@@ -683,4 +684,16 @@ public void testShowSqlBlockRule() throws AnalysisException {
         Assert.assertEquals("Global", resultSet.getMetaData().getColumn(6).getName());
         Assert.assertEquals("Enable", resultSet.getMetaData().getColumn(7).getName());
     }
+
+    @Test
+    public void testIsShowTablesCaseSensitive() {
+        ShowSqlBlockRuleStmt stmt = new ShowSqlBlockRuleStmt("test_case_sensitive");
+        ShowExecutor executor = new ShowExecutor(ctx, stmt);
+        GlobalVariable.lowerCaseTableNames = 0;
+        Assert.assertEquals(CaseSensibility.TABLE.getCaseSensibility(), executor.isShowTablesCaseSensitive());
+        GlobalVariable.lowerCaseTableNames = 1;
+        Assert.assertEquals(false, executor.isShowTablesCaseSensitive());
+        GlobalVariable.lowerCaseTableNames = 2;
+        Assert.assertEquals(false, executor.isShowTablesCaseSensitive());
+    }
 }