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fix(parser): support CHARACTER SET in CAST CHAR types #2497

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Merged
manticore-projects merged 1 commit into from
Aug 22, 2026
+23 −6
Merged

fix(parser): support CHARACTER SET in CAST CHAR types #2497

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14 changes: 8 additions & 6 deletions src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
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Original file line number Diff line number Diff line change
Expand Up @@ -11410,12 +11410,14 @@ ColDataType DataType():
( tk=<K_DATETIMELITERAL> | tk=<DT_ZONE> | tk = <DATA_TYPE> | tk = <K_SIGNED> | tk = <K_UNSIGNED>
| tk=<K_CHARACTER> | tk=<K_BIT> | tk=<K_BYTES> | tk=<K_BINARY> | tk=<K_BOOLEAN>
| tk=<K_CHAR> | tk=<K_JSON> | tk=<K_STRING> ) { type = tk.image; }
[
// MySQL seems to allow: INT UNSIGNED
LOOKAHEAD(2) ( LOOKAHEAD(2) ( tk = <DATA_TYPE> | tk = <K_SIGNED> | tk = <K_UNSIGNED>
| tk=<K_CHARACTER> | tk=<K_BIT> | tk=<K_BYTES> | tk=<K_BINARY> | tk=<K_BOOLEAN>
| tk=<K_CHAR> | tk=<K_JSON> | tk=<K_STRING> ) { type += " " + tk.image; } )+
]
(
// MySQL seems to allow: INT UNSIGNED. Do not consume CHARACTER when it starts
// the trailing CHARACTER SET clause of a character type.
LOOKAHEAD(2, { getToken(1).kind != K_CHARACTER || getToken(2).kind != K_SET })
( tk = <DATA_TYPE> | tk = <K_SIGNED> | tk = <K_UNSIGNED>
| tk=<K_CHARACTER> | tk=<K_BIT> | tk=<K_BYTES> | tk=<K_BINARY> | tk=<K_BOOLEAN>
| tk=<K_CHAR> | tk=<K_JSON> | tk=<K_STRING> ) { type += " " + tk.image; }
)*
[
LOOKAHEAD(2) "(" ( tk=<S_LONG> { precision = Integer.valueOf(tk.image); } | tk=<K_MAX> { precision = Integer.MAX_VALUE; } )
[ <K_BYTE> | <K_CHAR> ]
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15 changes: 15 additions & 0 deletions src/test/java/net/sf/jsqlparser/expression/CastExpressionTest.java
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Expand Up @@ -68,6 +68,21 @@ void testImplicitCastDoublePrecisionIssue1344() throws JSQLParserException {
Assertions.assertTrue(select.getSelectItem(0).getExpression() instanceof CastExpression);
}

@Test
void testCastCharWithCharacterSet() throws JSQLParserException {
String sqlStr = "SELECT CAST('abc' AS CHAR CHARACTER SET utf8mb4)";
PlainSelect select = (PlainSelect) assertSqlCanBeParsedAndDeparsed(sqlStr, true);
CastExpression castExpression = Assertions.assertInstanceOf(CastExpression.class,
select.getSelectItem(0).getExpression());

Assertions.assertEquals("CHAR", castExpression.getColDataType().getDataType());
Assertions.assertEquals("utf8mb4", castExpression.getColDataType().getCharacterSet());

assertSqlCanBeParsedAndDeparsed(
"SELECT CAST('abc' AS CHAR(10) CHARACTER SET utf8mb4)", true);
assertSqlCanBeParsedAndDeparsed("SELECT CAST('abc' AS CHARACTER VARYING)", true);
}


@Test
public void testCastToSigned() throws JSQLParserException {
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