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| 1 | +/*- |
| 2 | + * #%L |
| 3 | + * JSQLParser library |
| 4 | + * %% |
| 5 | + * Copyright (C) 2004 - 2026 JSQLParser |
| 6 | + * %% |
| 7 | + * Dual licensed under GNU LGPL 2.1 or Apache License 2.0 |
| 8 | + * #L% |
| 9 | + */ |
| 10 | +package net.sf.jsqlparser.statement.update; |
| 11 | + |
| 12 | +import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed; |
| 13 | +import static org.junit.jupiter.api.Assertions.*; |
| 14 | + |
| 15 | +import java.util.Set; |
| 16 | +import net.sf.jsqlparser.JSQLParserException; |
| 17 | +import net.sf.jsqlparser.expression.LongValue; |
| 18 | +import net.sf.jsqlparser.parser.AbstractJSqlParser.Dialect; |
| 19 | +import net.sf.jsqlparser.parser.CCJSqlParserUtil; |
| 20 | +import net.sf.jsqlparser.statement.Statement; |
| 21 | +import net.sf.jsqlparser.util.TablesNamesFinder; |
| 22 | +import net.sf.jsqlparser.util.deparser.ExpressionDeParser; |
| 23 | +import net.sf.jsqlparser.util.deparser.SelectDeParser; |
| 24 | +import net.sf.jsqlparser.util.deparser.StatementDeParser; |
| 25 | +import org.junit.jupiter.api.Test; |
| 26 | +import org.junit.jupiter.params.ParameterizedTest; |
| 27 | +import org.junit.jupiter.params.provider.ValueSource; |
| 28 | + |
| 29 | +class TeradataUpdateTest { |
| 30 | + private static Update parse(String sql) throws JSQLParserException { |
| 31 | + return (Update) CCJSqlParserUtil.parse(sql, p -> p.withDialect(Dialect.TERADATA)); |
| 32 | + } |
| 33 | + |
| 34 | + @Test |
| 35 | + void parsesIssue891AndFindsSourceTables() throws Exception { |
| 36 | + String sql = "UPDATE a FROM db1.table1 a, db2.tabl2 b SET a.column1 = b.column1 " |
| 37 | + + "WHERE a.column2 = b.column2"; |
| 38 | + Update update = (Update) assertSqlCanBeParsedAndDeparsed(sql, true, |
| 39 | + p -> p.withDialect(Dialect.TERADATA)); |
| 40 | + assertTrue(update.isFromBeforeSet()); |
| 41 | + assertTrue(update.isTargetTableAlias()); |
| 42 | + assertEquals("a", update.getTable().getName()); |
| 43 | + assertEquals(1, update.getJoins().size()); |
| 44 | + assertEquals(Set.of("db1.table1", "db2.tabl2"), new TablesNamesFinder().getTables(update)); |
| 45 | + assertEquals(sql, parse(update.toString()).toString()); |
| 46 | + } |
| 47 | + |
| 48 | + @ParameterizedTest |
| 49 | + @ValueSource(strings = { |
| 50 | + "UPDATE t FROM source s SET id = s.id", |
| 51 | + "UPDATE b FROM source a, target b SET b.id = a.id WHERE a.id > 1", |
| 52 | + "UPDATE \"target\" FROM \"schema\".\"table\" AS \"target\" SET id = 1", |
| 53 | + "UPDATE t SET id = 1"}) |
| 54 | + void roundTripsTargetsAndOptionalFrom(String sql) throws Exception { |
| 55 | + Statement statement = assertSqlCanBeParsedAndDeparsed(sql, true, |
| 56 | + p -> p.withDialect(Dialect.TERADATA)); |
| 57 | + assertEquals(statement.toString(), parse(statement.toString()).toString()); |
| 58 | + } |
| 59 | + |
| 60 | + @Test |
| 61 | + void gatesClauseOrderAndRejectsDuplicates() throws Exception { |
| 62 | + String sql = "UPDATE t FROM s SET id = 1"; |
| 63 | + assertThrows(JSQLParserException.class, () -> CCJSqlParserUtil.parse(sql)); |
| 64 | + for (Dialect dialect : Dialect.values()) { |
| 65 | + if (dialect != Dialect.TERADATA) { |
| 66 | + assertThrows(JSQLParserException.class, |
| 67 | + () -> CCJSqlParserUtil.parse(sql, p -> p.withDialect(dialect))); |
| 68 | + } |
| 69 | + } |
| 70 | + assertThrows(JSQLParserException.class, () -> parse(sql + " FROM other")); |
| 71 | + assertThrows(JSQLParserException.class, () -> parse("UPDATE t FROM SET id = 1")); |
| 72 | + Update legacy = (Update) assertSqlCanBeParsedAndDeparsed("UPDATE t SET id = 1 FROM s"); |
| 73 | + assertFalse(legacy.isFromBeforeSet()); |
| 74 | + legacy.setFromBeforeSet(true); |
| 75 | + assertEquals(sql, legacy.toString()); |
| 76 | + assertEquals(2, CCJSqlParserUtil.parseStatements(sql + "; SELECT 1;", |
| 77 | + p -> p.withDialect(Dialect.TERADATA)).size()); |
| 78 | + } |
| 79 | + |
| 80 | + @Test |
| 81 | + void customDeparserKeepsFromPosition() throws Exception { |
| 82 | + Update update = parse("UPDATE t FROM s SET id = 1 WHERE s.id > 2"); |
| 83 | + StringBuilder builder = new StringBuilder(); |
| 84 | + ExpressionDeParser expressions = new ExpressionDeParser() { |
| 85 | + @Override |
| 86 | + public <S> StringBuilder visit(LongValue value, S context) { |
| 87 | + return getBuilder().append(value.getValue() + 10); |
| 88 | + } |
| 89 | + }; |
| 90 | + update.accept(new StatementDeParser(expressions, new SelectDeParser(), builder)); |
| 91 | + assertEquals("UPDATE t FROM s SET id = 11 WHERE s.id > 12", builder.toString()); |
| 92 | + assertEquals(builder.toString(), parse(builder.toString()).toString()); |
| 93 | + update.withFromBeforeSet(false); |
| 94 | + assertEquals("UPDATE t SET id = 1 FROM s WHERE s.id > 2", update.toString()); |
| 95 | + } |
| 96 | +} |
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