fixes #123

Author: wumpz

src/main/java/net/sf/jsqlparser/expression/operators/relational/LikeExpression.java

@@ -28,6 +28,7 @@ public class LikeExpression extends BinaryExpression {
 
 	private boolean not = false;
 	private String escape = null;
+    private boolean caseInsensitive = false;
 
 	@Override
 	public boolean isNot() {
@@ -45,7 +46,7 @@ public void accept(ExpressionVisitor expressionVisitor) {
 
 	@Override
 	public String getStringExpression() {
-		return ((not) ? "NOT " : "") + "LIKE";
+		return ((not) ? "NOT " : "") + (caseInsensitive?"ILIKE":"LIKE");
 	}
 
 	@Override
@@ -65,4 +66,12 @@ public String getEscape() {
 	public void setEscape(String escape) {
 		this.escape = escape;
 	}
+
+    public boolean isCaseInsensitive() {
+        return caseInsensitive;
+    }
+
+    public void setCaseInsensitive(boolean caseInsensitive) {
+        this.caseInsensitive = caseInsensitive;
+    }
 }

src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java

@@ -182,7 +182,7 @@ public void visit(JdbcParameter jdbcParameter) {
 
     @Override
     public void visit(LikeExpression likeExpression) {
-        visitBinaryExpression(likeExpression, " LIKE ");
+        visitBinaryExpression(likeExpression, likeExpression.isCaseInsensitive()?" ILIKE ":" LIKE ");
         String escape = likeExpression.getEscape();
         if (escape != null) {
             buffer.append(" ESCAPE '").append(escape).append('\'');

src/main/javacc/net/sf/jsqlparser/parser/JSqlParserCC.jj

@@ -116,6 +116,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_INTO:"INTO">
 |   <K_NULL:"NULL">
 |   <K_LIKE:"LIKE">
+|   <K_ILIKE:"ILIKE">
 |   <K_DROP:"DROP">
 |   <K_JOIN:"JOIN">
 |   <K_LEFT:"LEFT">
@@ -1454,7 +1455,7 @@ Expression LikeExpression() :
 }
 {
 	leftExpression=SimpleExpression()
-    [<K_NOT> { result.setNot(true); } ] <K_LIKE> rightExpression=SimpleExpression()
+    [<K_NOT> { result.setNot(true); } ] ( <K_LIKE> | <K_ILIKE> { result.setCaseInsensitive(true); } ) rightExpression=SimpleExpression()
     [<K_ESCAPE> token=<S_CHAR_LITERAL> { result.setEscape((new StringValue(token.image)).getValue()); }]
 	{
 		result.setLeftExpression(leftExpression);

src/test/java/net/sf/jsqlparser/test/select/SelectTest.java

@@ -819,6 +819,11 @@ public void testLike() throws JSQLParserException {
         assertEquals("test", ((StringValue) ((LikeExpression) plainSelect.getWhere()).getRightExpression()).getValue());
         assertEquals("test2", ((LikeExpression) plainSelect.getWhere()).getEscape());
     }
+    
+    public void testIlike() throws JSQLParserException {
+        String statement = "SELECT col1 FROM table1 WHERE col1 ILIKE '%hello%'";
+        assertSqlCanBeParsedAndDeparsed(statement);
+    }
 
     public void testSelectOrderHaving() throws JSQLParserException {
         String statement = "SELECT units, count(units) AS num FROM currency GROUP BY units HAVING count(units) > 1 ORDER BY num";