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new a86d23f7a98 [FLINK-36642][table] Fix SQL names of built-in functions
(#25601)
a86d23f7a98 is described below
commit a86d23f7a9843b7bd7661ca13a6399352a2b641b
Author: Fabian Hueske <fhue...@confluent.io>
AuthorDate: Mon Nov 4 12:21:45 2024 +0100
[FLINK-36642][table] Fix SQL names of built-in functions (#25601)
* fix sqlNames of built-in functions
* add test cases to ExpressionSerializationTest checking correct SQL
serialization of Table API expression
---
.../expressions/ExpressionSerializationTest.java | 66 +++++++++++++++++++++-
.../functions/BuiltInFunctionDefinitions.java | 23 ++++++++
2 files changed, 88 insertions(+), 1 deletion(-)
diff --git
a/flink-table/flink-table-api-java/src/test/java/org/apache/flink/table/expressions/ExpressionSerializationTest.java
b/flink-table/flink-table-api-java/src/test/java/org/apache/flink/table/expressions/ExpressionSerializationTest.java
index 22d85bad8eb..cee99c63273 100644
---
a/flink-table/flink-table-api-java/src/test/java/org/apache/flink/table/expressions/ExpressionSerializationTest.java
+++
b/flink-table/flink-table-api-java/src/test/java/org/apache/flink/table/expressions/ExpressionSerializationTest.java
@@ -48,6 +48,7 @@ import java.util.Optional;
import java.util.stream.Stream;
import static org.apache.flink.table.api.Expressions.$;
+import static org.apache.flink.table.api.Expressions.lit;
import static org.apache.flink.table.api.Expressions.timestampDiff;
import static org.assertj.core.api.Assertions.assertThat;
@@ -129,6 +130,8 @@ public class ExpressionSerializationTest {
TestSpec.forExpr(Expressions.negative($("f0")))
.withField("f0", DataTypes.BIGINT())
.expectStr("- `f0`"),
+ TestSpec.forExpr(Expressions.randInteger(Expressions.lit(10)))
+ .expectStr("RAND_INTEGER(10)"),
TestSpec.forExpr($("f0").in(1, 2, 3, 4, 5))
.withField("f0", DataTypes.INT())
.expectStr("`f0` IN (1, 2, 3, 4, 5)"),
@@ -194,6 +197,27 @@ public class ExpressionSerializationTest {
TestSpec.forExpr($("f0").substring(2, 5))
.withField("f0", DataTypes.STRING())
.expectStr("SUBSTRING(`f0` FROM 2 FOR 5)"),
+ TestSpec.forExpr($("f0").charLength())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("CHAR_LENGTH(`f0`)"),
+ TestSpec.forExpr($("f0").fromBase64())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("FROM_BASE64(`f0`)"),
+ TestSpec.forExpr($("f0").toBase64())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("TO_BASE64(`f0`)"),
+ TestSpec.forExpr($("f0").parseUrl(lit("HOST")))
+ .withField("f0", DataTypes.STRING())
+ .expectStr("PARSE_URL(`f0`, 'HOST')"),
+ TestSpec.forExpr($("f0").regexpReplace(lit("[0-9]"), lit("$")))
+ .withField("f0", DataTypes.STRING())
+ .expectStr("REGEXP_REPLACE(`f0`, '[0-9]', '$')"),
+ TestSpec.forExpr($("f0").splitIndex(lit(":"), lit(2)))
+ .withField("f0", DataTypes.STRING())
+ .expectStr("SPLIT_INDEX(`f0`, ':', 2)"),
+ TestSpec.forExpr($("f0").strToMap())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("STR_TO_MAP(`f0`)"),
TestSpec.forExpr($("f0").get("g0").plus($("f0").get("g1").get("h1")))
.withField(
"f0",
@@ -289,6 +313,18 @@ public class ExpressionSerializationTest {
.plus($("f0").max()))
.withField("f0", DataTypes.BIGINT())
.expectStr("((COUNT(DISTINCT `f0`)) + (AVG(DISTINCT
`f0`))) + (MAX(`f0`))"),
+ TestSpec.forExpr($("f0").stddevPop())
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("STDDEV_POP(`f0`)"),
+ TestSpec.forExpr($("f0").stddevSamp())
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("STDDEV_SAMP(`f0`)"),
+ TestSpec.forExpr($("f0").varPop())
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("VAR_POP(`f0`)"),
+ TestSpec.forExpr($("f0").varSamp())
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("VAR_SAMP(`f0`)"),
// Time functions
TestSpec.forExpr($("f0").extract(TimeIntervalUnit.HOUR))
@@ -312,7 +348,35 @@ public class ExpressionSerializationTest {
TestSpec.forExpr(timestampDiff(TimePointUnit.DAY, $("f0"),
$("f1")))
.withField("f0", DataTypes.TIMESTAMP())
.withField("f1", DataTypes.TIMESTAMP())
- .expectStr("TIMESTAMPDIFF(DAY, `f0`, `f1`)"));
+ .expectStr("TIMESTAMPDIFF(DAY, `f0`, `f1`)"),
+
TestSpec.forExpr(Expressions.currentDate()).expectStr("CURRENT_DATE()"),
+
TestSpec.forExpr(Expressions.currentTime()).expectStr("CURRENT_TIME()"),
+
TestSpec.forExpr(Expressions.currentTimestamp()).expectStr("CURRENT_TIMESTAMP()"),
+ TestSpec.forExpr(Expressions.dateFormat($("f0"),
lit("yyyy-MM-dd")))
+ .withField("f0", DataTypes.TIMESTAMP(3))
+ .expectStr("DATE_FORMAT(`f0`, 'yyyy-MM-dd')"),
+ TestSpec.forExpr(Expressions.toTimestamp($("f0")))
+ .withField("f0", DataTypes.STRING())
+ .expectStr("TO_TIMESTAMP(`f0`)"),
+ TestSpec.forExpr(Expressions.toTimestampLtz($("f0"), lit(3)))
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("TO_TIMESTAMP_LTZ(`f0`, 3)"),
+ TestSpec.forExpr($("f0").toDate())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("CAST(`f0` AS DATE)"),
+ TestSpec.forExpr($("f0").toTime())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("CAST(`f0` AS TIME(0))"),
+ TestSpec.forExpr($("f0").toTimestamp())
+ .withField("f0", DataTypes.STRING())
+ .expectStr("CAST(`f0` AS TIMESTAMP(3))"),
+ TestSpec.forExpr(Expressions.convertTz($("f0"), lit("PST"),
lit("GMT")))
+ .withField("f0", DataTypes.STRING())
+ .expectStr("CONVERT_TZ(`f0`, 'PST', 'GMT')"),
+ TestSpec.forExpr(Expressions.fromUnixtime($("f0")))
+ .withField("f0", DataTypes.BIGINT())
+ .expectStr("FROM_UNIXTIME(`f0`)"),
+
TestSpec.forExpr(Expressions.unixTimestamp()).expectStr("UNIX_TIMESTAMP()"));
}
@ParameterizedTest
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java
index 7d48a10fbc5..13dfdf8054b 100644
---
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java
@@ -811,6 +811,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition STDDEV_POP =
BuiltInFunctionDefinition.newBuilder()
.name("stddevPop")
+ .sqlName("STDDEV_POP")
.kind(AGGREGATE)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.NUMERIC)))
.outputTypeStrategy(
@@ -820,6 +821,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition STDDEV_SAMP =
BuiltInFunctionDefinition.newBuilder()
.name("stddevSamp")
+ .sqlName("STDDEV_SAMP")
.kind(AGGREGATE)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.NUMERIC)))
.outputTypeStrategy(
@@ -829,6 +831,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition VAR_POP =
BuiltInFunctionDefinition.newBuilder()
.name("varPop")
+ .sqlName("VAR_POP")
.kind(AGGREGATE)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.NUMERIC)))
.outputTypeStrategy(
@@ -838,6 +841,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition VAR_SAMP =
BuiltInFunctionDefinition.newBuilder()
.name("varSamp")
+ .sqlName("VAR_SAMP")
.kind(AGGREGATE)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.NUMERIC)))
.outputTypeStrategy(
@@ -896,6 +900,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CHAR_LENGTH =
BuiltInFunctionDefinition.newBuilder()
.name("charLength")
+ .sqlName("CHAR_LENGTH")
.kind(SCALAR)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.CHARACTER_STRING)))
.outputTypeStrategy(nullableIfArgs(explicit(INT())))
@@ -1288,6 +1293,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition FROM_BASE64 =
BuiltInFunctionDefinition.newBuilder()
.name("fromBase64")
+ .sqlName("FROM_BASE64")
.kind(SCALAR)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.CHARACTER_STRING)))
.outputTypeStrategy(nullableIfArgs(explicit(DataTypes.STRING())))
@@ -1296,6 +1302,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition TO_BASE64 =
BuiltInFunctionDefinition.newBuilder()
.name("toBase64")
+ .sqlName("TO_BASE64")
.kind(SCALAR)
.inputTypeStrategy(sequence(logical(LogicalTypeFamily.CHARACTER_STRING)))
.outputTypeStrategy(nullableIfArgs(explicit(DataTypes.STRING())))
@@ -1391,6 +1398,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition PARSE_URL =
BuiltInFunctionDefinition.newBuilder()
.name("parseUrl")
+ .sqlName("PARSE_URL")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -1496,6 +1504,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition REGEXP_REPLACE =
BuiltInFunctionDefinition.newBuilder()
.name("regexpReplace")
+ .sqlName("REGEXP_REPLACE")
.kind(SCALAR)
.inputTypeStrategy(
sequence(
@@ -1516,6 +1525,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition SPLIT_INDEX =
BuiltInFunctionDefinition.newBuilder()
.name("splitIndex")
+ .sqlName("SPLIT_INDEX")
.kind(SCALAR)
.inputTypeStrategy(
sequence(
@@ -1528,6 +1538,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition STR_TO_MAP =
BuiltInFunctionDefinition.newBuilder()
.name("strToMap")
+ .sqlName("STR_TO_MAP")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -2030,6 +2041,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition RAND_INTEGER =
BuiltInFunctionDefinition.newBuilder()
.name("randInteger")
+ .sqlName("RAND_INTEGER")
.kind(SCALAR)
.notDeterministic()
.inputTypeStrategy(
@@ -2124,6 +2136,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CURRENT_DATE =
BuiltInFunctionDefinition.newBuilder()
.name("currentDate")
+ .sqlName("CURRENT_DATE")
.kind(SCALAR)
.outputTypeStrategy(explicit(DATE().notNull()))
.build();
@@ -2131,6 +2144,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CURRENT_TIME =
BuiltInFunctionDefinition.newBuilder()
.name("currentTime")
+ .sqlName("CURRENT_TIME")
.kind(SCALAR)
.outputTypeStrategy(explicit(TIME().notNull()))
.build();
@@ -2145,6 +2159,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CURRENT_TIMESTAMP =
BuiltInFunctionDefinition.newBuilder()
.name("currentTimestamp")
+ .sqlName("CURRENT_TIMESTAMP")
.kind(SCALAR)
.outputTypeStrategy(explicit(TIMESTAMP_LTZ(3).notNull()))
.build();
@@ -2159,6 +2174,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CURRENT_ROW_TIMESTAMP =
BuiltInFunctionDefinition.newBuilder()
.name("currentRowTimestamp")
+ .sqlName("CURRENT_ROW_TIMESTAMP")
.kind(SCALAR)
.outputTypeStrategy(explicit(TIMESTAMP_LTZ(3).notNull()))
.notDeterministic()
@@ -2190,6 +2206,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition DATE_FORMAT =
BuiltInFunctionDefinition.newBuilder()
.name("dateFormat")
+ .sqlName("DATE_FORMAT")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -2237,6 +2254,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition CONVERT_TZ =
BuiltInFunctionDefinition.newBuilder()
.name("convertTz")
+ .sqlName("CONVERT_TZ")
.kind(SCALAR)
.inputTypeStrategy(
sequence(
@@ -2249,6 +2267,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition FROM_UNIXTIME =
BuiltInFunctionDefinition.newBuilder()
.name("fromUnixtime")
+ .sqlName("FROM_UNIXTIME")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -2262,6 +2281,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition UNIX_TIMESTAMP =
BuiltInFunctionDefinition.newBuilder()
.name("unixTimestamp")
+ .sqlName("UNIX_TIMESTAMP")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -2276,6 +2296,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition TO_DATE =
BuiltInFunctionDefinition.newBuilder()
.name("toDate")
+ .sqlName("TO_DATE")
.kind(SCALAR)
.inputTypeStrategy(
or(
@@ -2289,6 +2310,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition TO_TIMESTAMP_LTZ =
BuiltInFunctionDefinition.newBuilder()
.name("toTimestampLtz")
+ .sqlName("TO_TIMESTAMP_LTZ")
.kind(SCALAR)
.inputTypeStrategy(
sequence(
@@ -2300,6 +2322,7 @@ public final class BuiltInFunctionDefinitions {
public static final BuiltInFunctionDefinition TO_TIMESTAMP =
BuiltInFunctionDefinition.newBuilder()
.name("toTimestamp")
+ .sqlName("TO_TIMESTAMP")
.kind(SCALAR)
.inputTypeStrategy(
or(
