feature: DuckDB SIMILAR TO expression

Signed-off-by: Andreas Reichel <andreas@manticore-projects.com>
JSQLParser · Apr 25, 2024 · 302b4fb · 302b4fb
1 parent 6e9bf42
commit 302b4fb
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Showing 4 changed files with 20 additions and 4 deletions.
diff --git a/src/main/java/net/sf/jsqlparser/expression/operators/relational/LikeExpression.java b/src/main/java/net/sf/jsqlparser/expression/operators/relational/LikeExpression.java
@@ -15,10 +15,10 @@
 
 public class LikeExpression extends BinaryExpression {
     public enum KeyWord {
-        LIKE, ILIKE, RLIKE, REGEXP;
+        LIKE, ILIKE, RLIKE, REGEXP, SIMILAR_TO;
 
         public static KeyWord from(String keyword) {
-            return Enum.valueOf(KeyWord.class, keyword.toUpperCase());
+            return Enum.valueOf(KeyWord.class, keyword.toUpperCase().replaceAll("\\s+", "_"));
         }
     }
 
@@ -58,7 +58,8 @@ public String getStringExpression() {
     @Override
     public String toString() {
         String retval = getLeftExpression() + " " + (not ? "NOT " : "")
-                + likeKeyWord + " " + (useBinary ? "BINARY " : "") + getRightExpression();
+                + (likeKeyWord == KeyWord.SIMILAR_TO ? "SIMILAR TO" : likeKeyWord) + " "
+                + (useBinary ? "BINARY " : "") + getRightExpression();
         if (escapeExpression != null) {
             retval += " ESCAPE " + escapeExpression;
         }

diff --git a/src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java b/src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java
@@ -358,12 +358,16 @@ public void visit(JdbcParameter jdbcParameter) {
 
     @Override
     public void visit(LikeExpression likeExpression) {
+        String keywordStr = likeExpression.getLikeKeyWord() == LikeExpression.KeyWord.SIMILAR_TO
+                ? " SIMILAR TO"
+                : likeExpression.getLikeKeyWord().toString();
+
         likeExpression.getLeftExpression().accept(this);
         buffer.append(" ");
         if (likeExpression.isNot()) {
             buffer.append("NOT ");
         }
-        buffer.append(likeExpression.getLikeKeyWord()).append(" ");
+        buffer.append(keywordStr).append(" ");
         if (likeExpression.isUseBinary()) {
             buffer.append("BINARY ");
         }

diff --git a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
@@ -498,6 +498,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <OPENING_CURLY_BRACKET: "{">
 |   <CLOSING_CURLY_BRACKET: "}">
 |   <DOUBLE_COLON: ":">
+|   <K_SIMILAR_TO: ( <K_SIMILAR> (" ")+ <K_TO> ) >
 }
 
 TOKEN : /* Statement Separators */
@@ -3866,6 +3867,7 @@ Expression LikeExpression(Expression leftExpression) #LikeExpression:
         | token = <K_ILIKE>
         | token = <K_RLIKE>
         | token = <K_REGEXP>
+        | token = <K_SIMILAR_TO>
     ) { result.setLikeKeyWord( LikeExpression.KeyWord.from(token.image)); }
     [ LOOKAHEAD(2) <K_BINARY> {result.setUseBinary(true); } ]
     rightExpression=SimpleExpression()

diff --git a/src/test/java/net/sf/jsqlparser/expression/operators/relational/LikeExpressionTest.java b/src/test/java/net/sf/jsqlparser/expression/operators/relational/LikeExpressionTest.java
@@ -49,4 +49,13 @@ void testNotRLikeIssue1553() throws JSQLParserException {
         String sqlStr = "select * from test where id  not rlike '111'";
         TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
     }
+
+    @Test
+    void testDuckDBSimuilarTo() throws JSQLParserException {
+        String sqlStr = "SELECT v\n"
+                + "    FROM strings\n"
+                + "    WHERE v SIMILAR TO 'San* [fF].*'\n"
+                + "    ORDER BY v;";
+        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
+    }
 }