add ARRAY_CONTAINS function

h2/src/docsrc/help/help.csv

@@ -3360,6 +3360,14 @@ Returns the length of an array.
 CALL ARRAY_LENGTH(('Hello', 'World'))
 "
 
+"Functions (System)","ARRAY_CONTAINS","
+ARRAY_CONTAINS(arrayExpression, value)
+","
+Returns a boolean true if the array contains the value.
+","
+CALL ARRAY_CONTAINS(('Hello', 'World'), 'Hello')
+"
+
 "Functions (System)","AUTOCOMMIT","
 AUTOCOMMIT()
 ","

h2/src/main/org/h2/expression/Function.java

@@ -96,7 +96,7 @@ public class Function extends Expression implements FunctionCall {
             CASE = 206, NEXTVAL = 207, CURRVAL = 208, ARRAY_GET = 209, CSVREAD = 210, CSVWRITE = 211,
             MEMORY_FREE = 212, MEMORY_USED = 213, LOCK_MODE = 214, SCHEMA = 215, SESSION_ID = 216, ARRAY_LENGTH = 217,
             LINK_SCHEMA = 218, GREATEST = 219, LEAST = 220, CANCEL_SESSION = 221, SET = 222, TABLE = 223, TABLE_DISTINCT = 224,
-            FILE_READ = 225, TRANSACTION_ID = 226, TRUNCATE_VALUE = 227, NVL2 = 228, DECODE = 229;
+            FILE_READ = 225, TRANSACTION_ID = 226, TRUNCATE_VALUE = 227, NVL2 = 228, DECODE = 229, ARRAY_CONTAINS = 230;
 
     public static final int ROW_NUMBER = 300;
 
@@ -320,6 +320,7 @@ public class Function extends Expression implements FunctionCall {
         addFunctionNotDeterministic("NEXTVAL", NEXTVAL, VAR_ARGS, Value.LONG);
         addFunctionNotDeterministic("CURRVAL", CURRVAL, VAR_ARGS, Value.LONG);
         addFunction("ARRAY_GET", ARRAY_GET, 2, Value.STRING);
+        addFunction("ARRAY_CONTAINS", ARRAY_CONTAINS, 2, Value.BOOLEAN, false, true, false);
         addFunction("CSVREAD", CSVREAD, VAR_ARGS, Value.RESULT_SET, false, false, true);
         addFunction("CSVWRITE", CSVWRITE, VAR_ARGS, Value.INT, false, false, false);
         addFunctionNotDeterministic("MEMORY_FREE", MEMORY_FREE, 0, Value.INT);
@@ -873,6 +874,20 @@ public class Function extends Expression implements FunctionCall {
             }
             break;
         }
+        case ARRAY_CONTAINS: {
+            result = ValueBoolean.get(false);
+            if (v0.getType() == Value.ARRAY) {
+                Value v1 = argList[1].getValue(session);
+                Value[] list = ((ValueArray) v0).getList();
+                for (Value v : list) {
+                    if (v.equals(v1)) {
+                        result = ValueBoolean.get(true);
+                        break;
+                    }
+                }
+            }
+            break;
+        }
         case CANCEL_SESSION: {
             result = ValueBoolean.get(cancelStatement(session, v0.getInt()));
             break;

h2/src/main/org/h2/res/help.csv

@@ -1231,6 +1231,10 @@ Returns one element of an array."
 ARRAY_LENGTH(arrayExpression)
 ","
 Returns the length of an array."
+"Functions (System)","ARRAY_CONTAINS","
+ARRAY_CONTAINS(arrayExpression, value)
+","
+Returns true if the array contains the value."
 "Functions (System)","AUTOCOMMIT","
 AUTOCOMMIT()
 ","

h2/src/test/org/h2/test/testSimple.in.txt

@@ -16,6 +16,24 @@ select decode('3', 2.0, 2.0, 3, 3.0);
 > 3.0;
 select decode(4.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 9.0);
 > 4.0;
+select array_contains((4.0, 2.0, 2.0), 2.0);
+> TRUE;
+select array_contains((4.0, 2.0, 2.0), 5.0);
+> FALSE;
+select array_contains(('one', 'two'), 'one');
+> TRUE;
+select array_contains(('one', 'two'), 'xxx');
+> FALSE;
+select array_contains(('one', 'two'), null);
+> FALSE;
+select array_contains((null, 'two'), null);
+> TRUE;
+select array_contains(null, 'one');
+> FALSE;
+select array_contains(((1, 2), (3, 4)), (1, 2));
+> TRUE;
+select array_contains(((1, 2), (3, 4)), (5, 6));
+> FALSE;
 select * from (select group_concat(distinct 1) from system_range(1, 3));
 > 1;
 select sum(mod(x, 2) = 1) from system_range(1, 10);