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new 47006a493f98 [SPARK-48172][SQL] Fix escaping issues in JDBC Dialects
47006a493f98 is described below
commit 47006a493f98ca85196194d16d58b5847177b1a3
Author: Mihailo Milosevic <mihailo.milose...@databricks.com>
AuthorDate: Tue May 14 23:31:46 2024 +0800
[SPARK-48172][SQL] Fix escaping issues in JDBC Dialects
### What changes were proposed in this pull request?
Special case escaping for MySQL and fix issues with redundant escaping for
' character.
### Why are the changes needed?
When pushing down startsWith, endsWith and contains they are converted to
LIKE. This requires addition of escape characters for these expressions.
Unfortunately, MySQL uses ESCAPE '\\' syntax instead of ESCAPE '\' which would
cause errors when trying to push down.
### Does this PR introduce _any_ user-facing change?
Yes
### How was this patch tested?
Tests for each existing dialect.
### Was this patch authored or co-authored using generative AI tooling?
No.
Closes #46437 from mihailom-db/SPARK-48172.
Authored-by: Mihailo Milosevic <mihailo.milose...@databricks.com>
Signed-off-by: Wenchen Fan <wenc...@databricks.com>
---
.../spark/sql/jdbc/v2/DB2IntegrationSuite.scala | 6 +
.../sql/jdbc/v2/DockerJDBCIntegrationV2Suite.scala | 11 +
.../sql/jdbc/v2/MsSqlServerIntegrationSuite.scala | 6 +
.../spark/sql/jdbc/v2/MySQLIntegrationSuite.scala | 6 +
.../spark/sql/jdbc/v2/OracleIntegrationSuite.scala | 6 +
.../sql/jdbc/v2/PostgresIntegrationSuite.scala | 6 +
.../org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala | 229 +++++++++++++++++++++
.../sql/connector/util/V2ExpressionSQLBuilder.java | 1 -
.../sql/connector/expressions/expressions.scala | 4 +-
.../org/apache/spark/sql/jdbc/H2Dialect.scala | 7 -
.../org/apache/spark/sql/jdbc/MySQLDialect.scala | 15 ++
.../org/apache/spark/sql/jdbc/JDBCV2Suite.scala | 6 +-
12 files changed, 291 insertions(+), 12 deletions(-)
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DB2IntegrationSuite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DB2IntegrationSuite.scala
index 3642094d11b2..36795747319d 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DB2IntegrationSuite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DB2IntegrationSuite.scala
@@ -62,6 +62,12 @@ class DB2IntegrationSuite extends
DockerJDBCIntegrationV2Suite with V2JDBCTest {
connection.prepareStatement(
"CREATE TABLE employee (dept INTEGER, name VARCHAR(10), salary
DECIMAL(20, 2), bonus DOUBLE)")
.executeUpdate()
+ connection.prepareStatement(
+ s"""CREATE TABLE pattern_testing_table (
+ |pattern_testing_col LONGTEXT
+ |)
+ """.stripMargin
+ ).executeUpdate()
}
override def testUpdateColumnType(tbl: String): Unit = {
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DockerJDBCIntegrationV2Suite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DockerJDBCIntegrationV2Suite.scala
index 72edfc9f1bf1..a42caeafe6fe 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DockerJDBCIntegrationV2Suite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/DockerJDBCIntegrationV2Suite.scala
@@ -38,6 +38,17 @@ abstract class DockerJDBCIntegrationV2Suite extends
DockerJDBCIntegrationSuite {
.executeUpdate()
connection.prepareStatement("INSERT INTO employee VALUES (6, 'jen', 12000,
1200)")
.executeUpdate()
+
+ connection.prepareStatement(
+ s"""
+ |INSERT INTO pattern_testing_table VALUES
+ |('special_character_quote\\'_present'),
+ |('special_character_quote_not_present'),
+ |('special_character_percent%_present'),
+ |('special_character_percent_not_present'),
+ |('special_character_underscore_present'),
+ |('special_character_underscorenot_present')
+ """.stripMargin).executeUpdate()
}
def tablePreparation(connection: Connection): Unit
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MsSqlServerIntegrationSuite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MsSqlServerIntegrationSuite.scala
index b1b8aec5ad33..46530fe5419a 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MsSqlServerIntegrationSuite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MsSqlServerIntegrationSuite.scala
@@ -70,6 +70,12 @@ class MsSqlServerIntegrationSuite extends
DockerJDBCIntegrationV2Suite with V2JD
connection.prepareStatement(
"CREATE TABLE employee (dept INT, name VARCHAR(32), salary NUMERIC(20,
2), bonus FLOAT)")
.executeUpdate()
+ connection.prepareStatement(
+ s"""CREATE TABLE pattern_testing_table (
+ |pattern_testing_col LONGTEXT
+ |)
+ """.stripMargin
+ ).executeUpdate()
}
override def notSupportsTableComment: Boolean = true
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MySQLIntegrationSuite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MySQLIntegrationSuite.scala
index 22900c7bbcc8..d5478e664221 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MySQLIntegrationSuite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/MySQLIntegrationSuite.scala
@@ -73,6 +73,12 @@ class MySQLIntegrationSuite extends
DockerJDBCIntegrationV2Suite with V2JDBCTest
connection.prepareStatement(
"CREATE TABLE employee (dept INT, name VARCHAR(32), salary DECIMAL(20,
2)," +
" bonus DOUBLE)").executeUpdate()
+ connection.prepareStatement(
+ s"""CREATE TABLE pattern_testing_table (
+ |pattern_testing_col LONGTEXT
+ |)
+ """.stripMargin
+ ).executeUpdate()
}
override def testUpdateColumnType(tbl: String): Unit = {
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/OracleIntegrationSuite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/OracleIntegrationSuite.scala
index b35018ec16dc..a8e143d1691a 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/OracleIntegrationSuite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/OracleIntegrationSuite.scala
@@ -93,6 +93,12 @@ class OracleIntegrationSuite extends
DockerJDBCIntegrationV2Suite with V2JDBCTes
connection.prepareStatement(
"CREATE TABLE employee (dept NUMBER(32), name VARCHAR2(32), salary
NUMBER(20, 2)," +
" bonus BINARY_DOUBLE)").executeUpdate()
+ connection.prepareStatement(
+ s"""CREATE TABLE pattern_testing_table (
+ |pattern_testing_col LONGTEXT
+ |)
+ """.stripMargin
+ ).executeUpdate()
}
override def testUpdateColumnType(tbl: String): Unit = {
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/PostgresIntegrationSuite.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/PostgresIntegrationSuite.scala
index 1f09c2fd3fc5..24ad97af6449 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/PostgresIntegrationSuite.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/PostgresIntegrationSuite.scala
@@ -59,6 +59,12 @@ class PostgresIntegrationSuite extends
DockerJDBCIntegrationV2Suite with V2JDBCT
connection.prepareStatement(
"CREATE TABLE employee (dept INTEGER, name VARCHAR(32), salary
NUMERIC(20, 2)," +
" bonus double precision)").executeUpdate()
+ connection.prepareStatement(
+ s"""CREATE TABLE pattern_testing_table (
+ |pattern_testing_col LONGTEXT
+ |)
+ """.stripMargin
+ ).executeUpdate()
}
override def testUpdateColumnType(tbl: String): Unit = {
diff --git
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala
index b60107f90283..419f6a61d97e 100644
---
a/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala
+++
b/connector/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala
@@ -359,6 +359,235 @@ private[v2] trait V2JDBCTest extends SharedSparkSession
with DockerIntegrationFu
assert(scan.schema.names.sameElements(Seq(col)))
}
+ test("SPARK-48172: Test CONTAINS") {
+ val df1 = spark.sql(
+ s"""
+ |SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE contains(pattern_testing_col, 'quote\\'')""".stripMargin)
+ df1.explain("formatted")
+ val rows1 = df1.collect()
+ assert(rows1.length === 1)
+ assert(rows1(0).getString(0) === "special_character_quote'_present")
+
+ val df2 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE contains(pattern_testing_col, 'percent%')""".stripMargin)
+ val rows2 = df2.collect()
+ assert(rows2.length === 1)
+ assert(rows2(0).getString(0) === "special_character_percent%_present")
+
+ val df3 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE contains(pattern_testing_col, 'underscore_')""".stripMargin)
+ val rows3 = df3.collect()
+ assert(rows3.length === 1)
+ assert(rows3(0).getString(0) === "special_character_underscore_present")
+
+ val df4 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE contains(pattern_testing_col, 'character')
+ |ORDER BY pattern_testing_col""".stripMargin)
+ val rows4 = df4.collect()
+ assert(rows4.length === 1)
+ assert(rows4(0).getString(0) === "special_character_percent%_present")
+ assert(rows4(1).getString(0) === "special_character_percent_not_present")
+ assert(rows4(2).getString(0) === "special_character_quote'_present")
+ assert(rows4(3).getString(0) === "special_character_quote_not_present")
+ assert(rows4(4).getString(0) === "special_character_underscore_present")
+ assert(rows4(5).getString(0) === "special_character_underscorenot_present")
+ }
+
+ test("SPARK-48172: Test ENDSWITH") {
+ val df1 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE endswith(pattern_testing_col,
'quote\\'_present')""".stripMargin)
+ val rows1 = df1.collect()
+ assert(rows1.length === 1)
+ assert(rows1(0).getString(0) === "special_character_quote'_present")
+
+ val df2 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE endswith(pattern_testing_col,
'percent%_present')""".stripMargin)
+ val rows2 = df2.collect()
+ assert(rows2.length === 1)
+ assert(rows2(0).getString(0) === "special_character_percent%_present")
+
+ val df3 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE endswith(pattern_testing_col,
'underscore_present')""".stripMargin)
+ val rows3 = df3.collect()
+ assert(rows3.length === 1)
+ assert(rows3(0).getString(0) === "special_character_underscore_present")
+
+ val df4 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE endswith(pattern_testing_col, 'present')
+ |ORDER BY pattern_testing_col""".stripMargin)
+ val rows4 = df4.collect()
+ assert(rows4.length === 1)
+ assert(rows4(0).getString(0) === "special_character_percent%_present")
+ assert(rows4(1).getString(0) === "special_character_percent_not_present")
+ assert(rows4(2).getString(0) === "special_character_quote'_present")
+ assert(rows4(3).getString(0) === "special_character_quote_not_present")
+ assert(rows4(4).getString(0) === "special_character_underscore_present")
+ assert(rows4(5).getString(0) === "special_character_underscorenot_present")
+ }
+
+ test("SPARK-48172: Test STARTSWITH") {
+ val df1 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE startswith(pattern_testing_col,
'special_character_quote\\'')""".stripMargin)
+ val rows1 = df1.collect()
+ assert(rows1.length === 1)
+ assert(rows1(0).getString(0) === "special_character_quote'_present")
+
+ val df2 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE startswith(pattern_testing_col,
'special_character_percent%')""".stripMargin)
+ val rows2 = df2.collect()
+ assert(rows2.length === 1)
+ assert(rows2(0).getString(0) === "special_character_percent%_present")
+
+ val df3 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE startswith(pattern_testing_col,
'special_character_underscore_')""".stripMargin)
+ val rows3 = df3.collect()
+ assert(rows3.length === 1)
+ assert(rows3(0).getString(0) === "special_character_underscore_present")
+
+ val df4 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE startswith(pattern_testing_col, 'special_character')
+ |ORDER BY pattern_testing_col""".stripMargin)
+ val rows4 = df4.collect()
+ assert(rows4.length === 1)
+ assert(rows4(0).getString(0) === "special_character_percent%_present")
+ assert(rows4(1).getString(0) === "special_character_percent_not_present")
+ assert(rows4(2).getString(0) === "special_character_quote'_present")
+ assert(rows4(3).getString(0) === "special_character_quote_not_present")
+ assert(rows4(4).getString(0) === "special_character_underscore_present")
+ assert(rows4(5).getString(0) === "special_character_underscorenot_present")
+ }
+
+ test("SPARK-48172: Test LIKE") {
+ // this one should map to contains
+ val df1 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%quote\\'%'""".stripMargin)
+ val rows1 = df1.collect()
+ assert(rows1.length === 1)
+ assert(rows1(0).getString(0) === "special_character_quote'_present")
+
+ val df2 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%percent\\%%'""".stripMargin)
+ val rows2 = df2.collect()
+ assert(rows2.length === 1)
+ assert(rows2(0).getString(0) === "special_character_percent%_present")
+
+ val df3 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%underscore\\_%'""".stripMargin)
+ val rows3 = df3.collect()
+ assert(rows3.length === 1)
+ assert(rows3(0).getString(0) === "special_character_underscore_present")
+
+ val df4 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%character%'
+ |ORDER BY pattern_testing_col""".stripMargin)
+ val rows4 = df4.collect()
+ assert(rows4.length === 1)
+ assert(rows4(0).getString(0) === "special_character_percent%_present")
+ assert(rows4(1).getString(0) === "special_character_percent_not_present")
+ assert(rows4(2).getString(0) === "special_character_quote'_present")
+ assert(rows4(3).getString(0) === "special_character_quote_not_present")
+ assert(rows4(4).getString(0) === "special_character_underscore_present")
+ assert(rows4(5).getString(0) === "special_character_underscorenot_present")
+
+ // map to startsWith
+ // this one should map to contains
+ val df5 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE
'special_character_quote\\'%'""".stripMargin)
+ val rows5 = df5.collect()
+ assert(rows5.length === 1)
+ assert(rows5(0).getString(0) === "special_character_quote'_present")
+
+ val df6 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE
'special_character_percent\\%%'""".stripMargin)
+ val rows6 = df6.collect()
+ assert(rows6.length === 1)
+ assert(rows6(0).getString(0) === "special_character_percent%_present")
+
+ val df7 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE
'special_character_underscore\\_%'""".stripMargin)
+ val rows7 = df7.collect()
+ assert(rows7.length === 1)
+ assert(rows7(0).getString(0) === "special_character_underscore_present")
+
+ val df8 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE 'special_character%'
+ |ORDER BY pattern_testing_col""".stripMargin)
+ val rows8 = df8.collect()
+ assert(rows8.length === 1)
+ assert(rows8(0).getString(0) === "special_character_percent%_present")
+ assert(rows8(1).getString(0) === "special_character_percent_not_present")
+ assert(rows8(2).getString(0) === "special_character_quote'_present")
+ assert(rows8(3).getString(0) === "special_character_quote_not_present")
+ assert(rows8(4).getString(0) === "special_character_underscore_present")
+ assert(rows8(5).getString(0) === "special_character_underscorenot_present")
+ // map to endsWith
+ // this one should map to contains
+ val df9 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%quote\\'_present'""".stripMargin)
+ val rows9 = df9.collect()
+ assert(rows9.length === 1)
+ assert(rows9(0).getString(0) === "special_character_quote'_present")
+
+ val df10 = spark.sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%percent\\%_present'""".stripMargin)
+ val rows10 = df10.collect()
+ assert(rows10.length === 1)
+ assert(rows10(0).getString(0) === "special_character_percent%_present")
+
+ val df11 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE
'%underscore\\_present'""".stripMargin)
+ val rows11 = df11.collect()
+ assert(rows11.length === 1)
+ assert(rows11(0).getString(0) === "special_character_underscore_present")
+
+ val df12 = spark.
+ sql(
+ s"""SELECT * FROM $catalogName.pattern_testing_table
+ |WHERE pattern_testing_col LIKE '%present' ORDER BY
pattern_testing_col""".stripMargin)
+ val rows12 = df12.collect()
+ assert(rows12.length === 1)
+ assert(rows12(0).getString(0) === "special_character_percent%_present")
+ assert(rows12(1).getString(0) === "special_character_percent_not_present")
+ assert(rows12(2).getString(0) === "special_character_quote'_present")
+ assert(rows12(3).getString(0) === "special_character_quote_not_present")
+ assert(rows12(4).getString(0) === "special_character_underscore_present")
+ assert(rows12(5).getString(0) ===
"special_character_underscorenot_present")
+ }
+
test("SPARK-37038: Test TABLESAMPLE") {
if (supportsTableSample) {
withTable(s"$catalogName.new_table") {
diff --git
a/sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java
b/sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java
index e42d9193ea39..11f4389245d9 100644
---
a/sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java
+++
b/sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java
@@ -65,7 +65,6 @@ public class V2ExpressionSQLBuilder {
switch (c) {
case '_' -> builder.append("\\_");
case '%' -> builder.append("\\%");
- case '\'' -> builder.append("\\\'");
default -> builder.append(c);
}
}
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala
index fc41d5a98e4a..b43e627c0eec 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala
@@ -17,6 +17,8 @@
package org.apache.spark.sql.connector.expressions
+import org.apache.commons.lang3.StringUtils
+
import org.apache.spark.SparkException
import org.apache.spark.sql.catalyst
import org.apache.spark.sql.catalyst.parser.CatalystSqlParser
@@ -388,7 +390,7 @@ private[sql] object HoursTransform {
private[sql] final case class LiteralValue[T](value: T, dataType: DataType)
extends Literal[T] {
override def toString: String = {
if (dataType.isInstanceOf[StringType]) {
- s"'$value'"
+ s"'${StringUtils.replace(s"$value", "'", "''")}'"
} else {
s"$value"
}
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
index ebfc6093dc16..949455b248ff 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
@@ -259,13 +259,6 @@ private[sql] case class H2Dialect() extends JdbcDialect {
}
class H2SQLBuilder extends JDBCSQLBuilder {
- override def escapeSpecialCharsForLikePattern(str: String): String = {
- str.map {
- case '_' => "\\_"
- case '%' => "\\%"
- case c => c.toString
- }.mkString
- }
override def visitAggregateFunction(
funcName: String, isDistinct: Boolean, inputs: Array[String]): String =
diff --git
a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/MySQLDialect.scala
b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/MySQLDialect.scala
index d98fcdfd0b23..50951042737a 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/jdbc/MySQLDialect.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/jdbc/MySQLDialect.scala
@@ -66,6 +66,21 @@ private case class MySQLDialect() extends JdbcDialect with
SQLConfHelper {
}
}
+ override def visitStartsWith(l: String, r: String): String = {
+ val value = r.substring(1, r.length() - 1)
+ s"$l LIKE '${escapeSpecialCharsForLikePattern(value)}%' ESCAPE '\\\\'"
+ }
+
+ override def visitEndsWith(l: String, r: String): String = {
+ val value = r.substring(1, r.length() - 1)
+ s"$l LIKE '%${escapeSpecialCharsForLikePattern(value)}' ESCAPE '\\\\'"
+ }
+
+ override def visitContains(l: String, r: String): String = {
+ val value = r.substring(1, r.length() - 1)
+ s"$l LIKE '%${escapeSpecialCharsForLikePattern(value)}%' ESCAPE '\\\\'"
+ }
+
override def visitAggregateFunction(
funcName: String, isDistinct: Boolean, inputs: Array[String]): String =
if (isDistinct &&
distinctUnsupportedAggregateFunctions.contains(funcName)) {
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
index 1b3672cdba5a..8e98181a9802 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCV2Suite.scala
@@ -1305,7 +1305,7 @@ class JDBCV2Suite extends QueryTest with
SharedSparkSession with ExplainSuiteHel
val df5 =
spark.table("h2.test.address").filter($"email".startsWith("abc_'%"))
checkFiltersRemoved(df5)
checkPushedInfo(df5,
- raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE 'abc\_\'\%%' ESCAPE
'\']")
+ raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE 'abc\_''\%%' ESCAPE
'\']")
checkAnswer(df5, Seq(Row("abc_'%d...@gmail.com")))
val df6 =
spark.table("h2.test.address").filter($"email".endsWith("_...@gmail.com"))
@@ -1336,7 +1336,7 @@ class JDBCV2Suite extends QueryTest with
SharedSparkSession with ExplainSuiteHel
val df10 =
spark.table("h2.test.address").filter($"email".endsWith("_'%d...@gmail.com"))
checkFiltersRemoved(df10)
checkPushedInfo(df10,
- raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE
'%\_\'\%d...@gmail.com' ESCAPE '\']")
+ raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE
'%\_''\%d...@gmail.com' ESCAPE '\']")
checkAnswer(df10, Seq(Row("abc_'%d...@gmail.com")))
val df11 = spark.table("h2.test.address").filter($"email".contains("c_d"))
@@ -1364,7 +1364,7 @@ class JDBCV2Suite extends QueryTest with
SharedSparkSession with ExplainSuiteHel
val df15 =
spark.table("h2.test.address").filter($"email".contains("c_'%d"))
checkFiltersRemoved(df15)
checkPushedInfo(df15,
- raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE '%c\_\'\%d%' ESCAPE
'\']")
+ raw"PushedFilters: [EMAIL IS NOT NULL, EMAIL LIKE '%c\_''\%d%' ESCAPE
'\']")
checkAnswer(df15, Seq(Row("abc_'%d...@gmail.com")))
}
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