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Insert tests with missing/extra/reordered columns and fields
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spark/src/test/scala/org/apache/spark/sql/delta/DeltaInsertIntoColumnOrderSuite.scala
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| /* | ||
| * Copyright (2021) The Delta Lake Project Authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package org.apache.spark.sql.delta | ||
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| import org.apache.spark.sql.delta.sources.DeltaSQLConf | ||
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| import org.apache.spark.sql.internal.SQLConf | ||
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| /** | ||
| * Test suite covering INSERT operations with columns or struct fields ordered differently than in | ||
| * the table schema. | ||
| */ | ||
| class DeltaInsertIntoColumnOrderSuite extends DeltaInsertIntoTest { | ||
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| override def beforeAll(): Unit = { | ||
| super.beforeAll() | ||
| spark.conf.set(DeltaSQLConf.DELTA_STREAMING_SINK_ALLOW_IMPLICIT_CASTS.key, "false") | ||
| spark.conf.set(SQLConf.ANSI_ENABLED.key, "true") | ||
| } | ||
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| test("all test cases are implemented") { | ||
| checkAllTestCasesImplemented() | ||
| } | ||
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| // Inserting using a different ordering for top-level columns behaves as one would expect: | ||
| // inserts by position resolve columns based on position, inserts by name resolve based on name. | ||
| // Whether additional handling is required to add implicit casts doesn't impact this behavior. | ||
| for { (inserts, expectedAnswer) <- Seq( | ||
| insertsByPosition.intersect(insertsAppend) -> | ||
| TestData("a int, b int, c int", | ||
| Seq("""{ "a": 1, "b": 2, "c": 3 }""", """{ "a": 1, "b": 4, "c": 5 }""")), | ||
| insertsByPosition.intersect(insertsOverwrite) -> | ||
| TestData("a int, b int, c int", Seq("""{ "a": 1, "b": 4, "c": 5 }""")), | ||
| insertsByName.intersect(insertsAppend) -> | ||
| TestData("a int, b int, c int", | ||
| Seq("""{ "a": 1, "b": 2, "c": 3 }""", """{ "a": 1, "b": 5, "c": 4 }""")), | ||
| insertsByName.intersect(insertsOverwrite) -> | ||
| TestData("a int, b int, c int", Seq("""{ "a": 1, "b": 5, "c": 4 }""")) | ||
| ) | ||
| } { | ||
| testInserts(s"insert with different top-level column ordering")( | ||
| initialData = TestData("a int, b int, c int", Seq("""{ "a": 1, "b": 2, "c": 3 }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a int, c int, b int", Seq("""{ "a": 1, "c": 4, "b": 5 }""")), | ||
| expectedResult = ExpectedResult.Success(expectedAnswer), | ||
| includeInserts = inserts | ||
| ) | ||
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| testInserts(s"insert with implicit cast and different top-level column ordering")( | ||
| initialData = TestData("a int, b int, c int", Seq("""{ "a": 1, "b": 2, "c": 3 }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a long, c int, b int", Seq("""{ "a": 1, "c": 4, "b": 5 }""")), | ||
| expectedResult = ExpectedResult.Success(expectedAnswer), | ||
| // Dataframe insert by name don't support implicit cast, see negative test below. | ||
| includeInserts = inserts -- insertsByName.intersect(insertsDataframe) | ||
| ) | ||
| } | ||
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| testInserts(s"insert with implicit cast and different top-level column ordering")( | ||
| initialData = TestData("a int, b int, c int", Seq("""{ "a": 1, "b": 2, "c": 3 }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a long, c int, b int", Seq("""{ "a": 1, "c": 4, "b": 4 }""")), | ||
| expectedResult = ExpectedResult.Failure(ex => { | ||
| checkError( | ||
| ex, | ||
| "DELTA_FAILED_TO_MERGE_FIELDS", | ||
| parameters = Map( | ||
| "currentField" -> "a", | ||
| "updateField" -> "a" | ||
| ))}), | ||
| includeInserts = insertsByName.intersect(insertsDataframe) | ||
| ) | ||
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| // Inserting using a different ordering for struct fields is full of surprises... | ||
| for { (inserts: Set[Insert], expectedAnswer) <- Seq( | ||
| // SQL inserts by name uses position based resolution (!) for struct fields when there's no | ||
| // implicit cast required due to mismatching data types. | ||
| insertsByName.intersect(insertsSQL).intersect(insertsAppend) -> | ||
| TestData("a int, s struct <x int, y: int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""", """{ "a": 1, "s": { "x": 5, "y": 4 } }""")), | ||
| insertsByName.intersect(insertsSQL).intersect(insertsOverwrite) -> | ||
| TestData("a int, s struct <x int, y: int>", Seq("""{ "a": 1, "s": { "x": 5, "y": 4 } }""")), | ||
| // SQL inserts by position on the other hand uses name based resolution (?!) for struct fields. | ||
| // All dataframe inserts also use name based resolution for struct fields. | ||
| insertsByPosition.intersect(insertsSQL).intersect(insertsAppend) ++ | ||
| insertsDataframe.intersect(insertsAppend) -> | ||
| TestData("a int, s struct <x int, y: int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""", """{ "a": 1, "s": { "x": 4, "y": 5 } }""")), | ||
| insertsByPosition.intersect(insertsSQL).intersect(insertsOverwrite) ++ | ||
| insertsDataframe.intersect(insertsOverwrite) -> | ||
| TestData("a int, s struct <x int, y: int>", Seq("""{ "a": 1, "s": { "x": 4, "y": 5 } }""")) | ||
| ) | ||
| } { | ||
| testInserts(s"insert with different struct fields ordering")( | ||
| initialData = TestData( | ||
| "a int, s struct <x: int, y int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a int, s struct <y int, x: int>", | ||
| Seq("""{ "a": 1, "s": { "y": 5, "x": 4 } }""")), | ||
| expectedResult = ExpectedResult.Success(expectedAnswer), | ||
| includeInserts = inserts | ||
| ) | ||
| } | ||
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| for { (inserts: Set[Insert], expectedAnswer) <- Seq( | ||
| // When there's a type mismatch and an implicit cast is required, then all inserts use position | ||
| // based resolution for struct fields, except for `INSERT OVERWRITE PARTITION (partition)` which | ||
| // uses name based resolution, and dataframe inserts by name which don't support implicit cast | ||
| // and fail - see negative test below. | ||
| insertsAppend - StreamingInsert -> | ||
| TestData("a int, s struct <x int, y: int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""", """{ "a": 1, "s": { "x": 5, "y": 4 } }""")), | ||
| insertsOverwrite - SQLInsertOverwritePartitionByPosition -> | ||
| TestData("a int, s struct <x int, y: int>", Seq("""{ "a": 1, "s": { "x": 5, "y": 4 } }""")), | ||
| Set(SQLInsertOverwritePartitionByPosition) -> | ||
| TestData("a int, s struct <x int, y: int>", Seq("""{ "a": 1, "s": { "x": 4, "y": 5 } }""")) | ||
| ) | ||
| } { | ||
| testInserts(s"insert with implicit cast and different struct fields ordering")( | ||
| initialData = TestData( | ||
| "a int, s struct <x: int, y int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a long, s struct <y int, x: int>", | ||
| Seq("""{ "a": 1, "s": { "y": 5, "x": 4 } }""")), | ||
| expectedResult = ExpectedResult.Success(expectedAnswer), | ||
| includeInserts = inserts -- insertsDataframe.intersect(insertsByName) | ||
| ) | ||
| } | ||
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| testInserts(s"insert with implicit cast and different struct fields ordering")( | ||
| initialData = TestData( | ||
| "a int, s struct <x: int, y int>", | ||
| Seq("""{ "a": 1, "s": { "x": 2, "y": 3 } }""")), | ||
| partitionBy = Seq("a"), | ||
| overwriteWhere = "a" -> 1, | ||
| insertData = TestData("a long, s struct <y int, x: int>", | ||
| Seq("""{ "a": 1, "s": { "y": 5, "x": 4 } }""")), | ||
| expectedResult = ExpectedResult.Failure(ex => { | ||
| checkError( | ||
| ex, | ||
| "DELTA_FAILED_TO_MERGE_FIELDS", | ||
| parameters = Map( | ||
| "currentField" -> "a", | ||
| "updateField" -> "a" | ||
| ))}), | ||
| includeInserts = insertsDataframe.intersect(insertsByName) | ||
| ) | ||
| } |
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