>>>inferred_schema.graphqls
type Click {
  url: String!
  timestamp: DateTime!
  userid: String!
}

"An RFC-3339 compliant Full Date Scalar"
scalar Date

"A DateTime scalar that handles both full RFC3339 and shorter timestamp formats"
scalar DateTime

"A JSON scalar"
scalar JSON

"24-hour clock time value string in the format `hh:mm:ss` or `hh:mm:ss.sss`."
scalar LocalTime

"A 64-bit signed integer"
scalar Long

type Query {
  Click(limit: Int = 10, offset: Int = 0): [Click!]
  Recommendation(url: String!, limit: Int = 10, offset: Int = 0): [Recommendation!]
  Trending(limit: Int = 10, offset: Int = 0): [Trending!]
  VisitAfter(limit: Int = 10, offset: Int = 0): [VisitAfter!]
}

type Recommendation {
  url: String!
  rec: String!
  frequency: Long!
}

type Trending {
  url: String!
  total: Long!
}

type VisitAfter {
  beforeURL: String!
  afterURL: String!
  timestamp: DateTime!
}

enum _McpMethodType {
  NONE
  TOOL
  RESOURCE
}

enum _RestMethodType {
  NONE
  GET
  POST
}

directive @api(mcp: _McpMethodType, rest: _RestMethodType, uri: String) on QUERY | MUTATION | FIELD_DEFINITION

>>>pipeline_explain.txt
=== Click
ID:          default_catalog.default_database.Click
Type:        stream
Stage:       flink
Primary key: url, userid, timestamp
Timestamp:   timestamp
Row count:   ~1e8
---
Schema:
 - url: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - timestamp: TIMESTAMP_LTZ(3) *ROWTIME* NOT NULL
 - userid: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
Inputs:
 - default_catalog.default_database.Click__base
Annotations:
 - stream-root: Click

=== Recommendation
ID:          default_catalog.default_database.Recommendation
Type:        state
Stage:       flink
Primary key: url, rec
Timestamp:   -
Row count:   ~2e7
---
Schema:
 - url: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - rec: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - frequency: BIGINT NOT NULL
Inputs:
 - default_catalog.default_database.VisitAfter
Annotations:
 - sort: [0 ASC-nulls-first, 2 DESC-nulls-last]

=== Trending
ID:          default_catalog.default_database.Trending
Type:        state
Stage:       flink
Primary key: url
Timestamp:   -
Row count:   ~1e7
---
Schema:
 - url: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - total: BIGINT NOT NULL
Inputs:
 - default_catalog.default_database.Click
Annotations:
 - sort: [1 DESC-nulls-last, 0 ASC-nulls-first]

=== VisitAfter
ID:          default_catalog.default_database.VisitAfter
Type:        stream
Stage:       flink
Primary key: -
Timestamp:   timestamp
Row count:   ~3e7
---
Schema:
 - beforeURL: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - afterURL: VARCHAR(2147483647) CHARACTER SET "UTF-16LE" NOT NULL
 - timestamp: TIMESTAMP_LTZ(3) *ROWTIME* NOT NULL
Inputs:
 - default_catalog.default_database.Click

>>>flink-sql-no-functions.sql
CREATE TEMPORARY TABLE `Click__schema` (
  `url` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `timestamp` TIMESTAMP(3) WITH LOCAL TIME ZONE NOT NULL,
  `userid` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL
)
WITH (
  'connector' = 'datagen'
);
CREATE TABLE `Click` (
  PRIMARY KEY (`url`, `userid`, `timestamp`) NOT ENFORCED,
  WATERMARK FOR `timestamp` AS `timestamp` - INTERVAL '1' SECOND
)
WITH (
  'format' = 'flexible-json',
  'path' = '${DATA_PATH}/click.jsonl',
  'source.monitor-interval' = '10 sec',
  'connector' = 'filesystem'
)
LIKE `Click__schema`;
CREATE VIEW `Trending`
AS
SELECT `url`, COUNT(1) AS `total`
FROM `Click`
GROUP BY `url`;
CREATE VIEW `VisitAfter`
AS
SELECT `b`.`url` AS `beforeURL`, `a`.`url` AS `afterURL`, `a`.`timestamp` AS `timestamp`
FROM `Click` AS `b`
 INNER JOIN `Click` AS `a` ON `b`.`userid` = `a`.`userid` AND `b`.`timestamp` < `a`.`timestamp` AND `b`.`timestamp` >= `a`.`timestamp` - (INTERVAL 10 MINUTE);
CREATE VIEW `Recommendation`
AS
SELECT `beforeURL` AS `url`, `afterURL` AS `rec`, COUNT(1) AS `frequency`
FROM `VisitAfter`
GROUP BY `beforeURL`, `afterURL`;
CREATE TABLE `Click_1` (
  `url` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `timestamp` TIMESTAMP(3) WITH LOCAL TIME ZONE NOT NULL,
  `userid` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  PRIMARY KEY (`url`, `userid`, `timestamp`) NOT ENFORCED
)
WITH (
  'connector' = 'jdbc-sqrl',
  'driver' = 'org.postgresql.Driver',
  'password' = '${POSTGRES_PASSWORD}',
  'sink.on-conflict.action' = 'IGNORE',
  'table-name' = 'Click',
  'url' = 'jdbc:postgresql://${POSTGRES_AUTHORITY}',
  'username' = '${POSTGRES_USERNAME}'
);
CREATE TABLE `Recommendation_2` (
  `url` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `rec` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `frequency` BIGINT NOT NULL,
  PRIMARY KEY (`url`, `rec`) NOT ENFORCED
)
WITH (
  'connector' = 'jdbc-sqrl',
  'driver' = 'org.postgresql.Driver',
  'password' = '${POSTGRES_PASSWORD}',
  'table-name' = 'Recommendation',
  'url' = 'jdbc:postgresql://${POSTGRES_AUTHORITY}',
  'username' = '${POSTGRES_USERNAME}'
);
CREATE TABLE `Trending_3` (
  `url` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `total` BIGINT NOT NULL,
  PRIMARY KEY (`url`) NOT ENFORCED
)
WITH (
  'connector' = 'jdbc-sqrl',
  'driver' = 'org.postgresql.Driver',
  'password' = '${POSTGRES_PASSWORD}',
  'table-name' = 'Trending',
  'url' = 'jdbc:postgresql://${POSTGRES_AUTHORITY}',
  'username' = '${POSTGRES_USERNAME}'
);
CREATE TABLE `VisitAfter_4` (
  `beforeURL` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `afterURL` VARCHAR(2147483647) CHARACTER SET `UTF-16LE` NOT NULL,
  `timestamp` TIMESTAMP(3) WITH LOCAL TIME ZONE NOT NULL,
  `__pk_hash` CHAR(32) CHARACTER SET `UTF-16LE`,
  PRIMARY KEY (`__pk_hash`) NOT ENFORCED
)
WITH (
  'connector' = 'jdbc-sqrl',
  'driver' = 'org.postgresql.Driver',
  'password' = '${POSTGRES_PASSWORD}',
  'sink.on-conflict.action' = 'IGNORE',
  'table-name' = 'VisitAfter',
  'url' = 'jdbc:postgresql://${POSTGRES_AUTHORITY}',
  'username' = '${POSTGRES_USERNAME}'
);
EXECUTE STATEMENT SET BEGIN
INSERT INTO `default_catalog`.`default_database`.`Click_1`
SELECT *
 FROM `default_catalog`.`default_database`.`Click`
;
INSERT INTO `default_catalog`.`default_database`.`Recommendation_2`
 SELECT *
  FROM `default_catalog`.`default_database`.`Recommendation`
 ;
 INSERT INTO `default_catalog`.`default_database`.`Trending_3`
  SELECT *
   FROM `default_catalog`.`default_database`.`Trending`
  ;
  INSERT INTO `default_catalog`.`default_database`.`VisitAfter_4`
   SELECT `beforeURL`, `afterURL`, `timestamp`, `hash_columns`(`beforeURL`, `afterURL`, `timestamp`) AS `__pk_hash`
    FROM `default_catalog`.`default_database`.`VisitAfter`
   ;
   END
>>>postgres-schema.sql
CREATE TABLE IF NOT EXISTS "Click" ("url" TEXT NOT NULL, "timestamp" TIMESTAMP WITH TIME ZONE NOT NULL, "userid" TEXT NOT NULL, PRIMARY KEY ("url","userid","timestamp"));
CREATE TABLE IF NOT EXISTS "Recommendation" ("url" TEXT NOT NULL, "rec" TEXT NOT NULL, "frequency" BIGINT NOT NULL, PRIMARY KEY ("url","rec"));
CREATE TABLE IF NOT EXISTS "Trending" ("url" TEXT NOT NULL, "total" BIGINT NOT NULL, PRIMARY KEY ("url"));
CREATE TABLE IF NOT EXISTS "VisitAfter" ("beforeURL" TEXT NOT NULL, "afterURL" TEXT NOT NULL, "timestamp" TIMESTAMP WITH TIME ZONE NOT NULL, "__pk_hash" TEXT, PRIMARY KEY ("__pk_hash"))
>>>postgres-views.sql

>>>vertx.json
{
  "models" : {
    "v1" : {
      "queries" : [
        {
          "type" : "args",
          "parentType" : "Query",
          "fieldName" : "Click",
          "exec" : {
            "arguments" : [
              {
                "type" : "variable",
                "path" : "limit"
              },
              {
                "type" : "variable",
                "path" : "offset"
              }
            ],
            "query" : {
              "type" : "SqlQuery",
              "sql" : "SELECT *\nFROM \"Click\"",
              "parameters" : [ ],
              "pagination" : "LIMIT_AND_OFFSET",
              "cacheDurationMs" : 0,
              "database" : "POSTGRES"
            }
          }
        },
        {
          "type" : "args",
          "parentType" : "Query",
          "fieldName" : "Recommendation",
          "exec" : {
            "arguments" : [
              {
                "type" : "variable",
                "path" : "limit"
              },
              {
                "type" : "variable",
                "path" : "offset"
              },
              {
                "type" : "variable",
                "path" : "url"
              }
            ],
            "query" : {
              "type" : "SqlQuery",
              "sql" : "SELECT *\nFROM (SELECT \"url\", \"rec\", \"frequency\"\n  FROM \"Recommendation\"\n  ORDER BY \"url\" NULLS FIRST, \"frequency\" DESC NULLS LAST) AS \"t\"\nWHERE \"url\" = $1",
              "parameters" : [
                {
                  "type" : "arg",
                  "path" : "url",
                  "sqlType" : "VARCHAR"
                }
              ],
              "pagination" : "LIMIT_AND_OFFSET",
              "cacheDurationMs" : 0,
              "database" : "POSTGRES"
            }
          }
        },
        {
          "type" : "args",
          "parentType" : "Query",
          "fieldName" : "Trending",
          "exec" : {
            "arguments" : [
              {
                "type" : "variable",
                "path" : "limit"
              },
              {
                "type" : "variable",
                "path" : "offset"
              }
            ],
            "query" : {
              "type" : "SqlQuery",
              "sql" : "SELECT *\nFROM (SELECT \"url\", \"total\"\n  FROM \"Trending\"\n  ORDER BY \"total\" DESC NULLS LAST, \"url\" NULLS FIRST) AS \"t\"",
              "parameters" : [ ],
              "pagination" : "LIMIT_AND_OFFSET",
              "cacheDurationMs" : 0,
              "database" : "POSTGRES"
            }
          }
        },
        {
          "type" : "args",
          "parentType" : "Query",
          "fieldName" : "VisitAfter",
          "exec" : {
            "arguments" : [
              {
                "type" : "variable",
                "path" : "limit"
              },
              {
                "type" : "variable",
                "path" : "offset"
              }
            ],
            "query" : {
              "type" : "SqlQuery",
              "sql" : "SELECT \"beforeURL\", \"afterURL\", \"timestamp\"\nFROM \"VisitAfter\"",
              "parameters" : [ ],
              "pagination" : "LIMIT_AND_OFFSET",
              "cacheDurationMs" : 0,
              "database" : "POSTGRES"
            }
          }
        }
      ],
      "mutations" : [ ],
      "subscriptions" : [ ],
      "operations" : [
        {
          "function" : {
            "name" : "GetClick",
            "parameters" : {
              "type" : "object",
              "properties" : {
                "offset" : {
                  "type" : "integer"
                },
                "limit" : {
                  "type" : "integer"
                }
              },
              "required" : [ ]
            }
          },
          "format" : "JSON",
          "apiQuery" : {
            "query" : "query Click($limit: Int = 10, $offset: Int = 0) {\nClick(limit: $limit, offset: $offset) {\nurl\ntimestamp\nuserid\n}\n\n}",
            "queryName" : "Click",
            "operationType" : "QUERY"
          },
          "mcpMethod" : "TOOL",
          "restMethod" : "GET",
          "uriTemplate" : "queries/Click{?offset,limit}"
        },
        {
          "function" : {
            "name" : "GetRecommendation",
            "parameters" : {
              "type" : "object",
              "properties" : {
                "offset" : {
                  "type" : "integer"
                },
                "limit" : {
                  "type" : "integer"
                },
                "url" : {
                  "type" : "string"
                }
              },
              "required" : [
                "url"
              ]
            }
          },
          "format" : "JSON",
          "apiQuery" : {
            "query" : "query Recommendation($url: String!, $limit: Int = 10, $offset: Int = 0) {\nRecommendation(url: $url, limit: $limit, offset: $offset) {\nurl\nrec\nfrequency\n}\n\n}",
            "queryName" : "Recommendation",
            "operationType" : "QUERY"
          },
          "mcpMethod" : "TOOL",
          "restMethod" : "GET",
          "uriTemplate" : "queries/Recommendation{?offset,limit,url}"
        },
        {
          "function" : {
            "name" : "GetTrending",
            "parameters" : {
              "type" : "object",
              "properties" : {
                "offset" : {
                  "type" : "integer"
                },
                "limit" : {
                  "type" : "integer"
                }
              },
              "required" : [ ]
            }
          },
          "format" : "JSON",
          "apiQuery" : {
            "query" : "query Trending($limit: Int = 10, $offset: Int = 0) {\nTrending(limit: $limit, offset: $offset) {\nurl\ntotal\n}\n\n}",
            "queryName" : "Trending",
            "operationType" : "QUERY"
          },
          "mcpMethod" : "TOOL",
          "restMethod" : "GET",
          "uriTemplate" : "queries/Trending{?offset,limit}"
        },
        {
          "function" : {
            "name" : "GetVisitAfter",
            "parameters" : {
              "type" : "object",
              "properties" : {
                "offset" : {
                  "type" : "integer"
                },
                "limit" : {
                  "type" : "integer"
                }
              },
              "required" : [ ]
            }
          },
          "format" : "JSON",
          "apiQuery" : {
            "query" : "query VisitAfter($limit: Int = 10, $offset: Int = 0) {\nVisitAfter(limit: $limit, offset: $offset) {\nbeforeURL\nafterURL\ntimestamp\n}\n\n}",
            "queryName" : "VisitAfter",
            "operationType" : "QUERY"
          },
          "mcpMethod" : "TOOL",
          "restMethod" : "GET",
          "uriTemplate" : "queries/VisitAfter{?offset,limit}"
        }
      ],
      "schema" : {
        "type" : "string",
        "schema" : "type Click {\n  url: String!\n  timestamp: DateTime!\n  userid: String!\n}\n\n\"An RFC-3339 compliant Full Date Scalar\"\nscalar Date\n\n\"A DateTime scalar that handles both full RFC3339 and shorter timestamp formats\"\nscalar DateTime\n\n\"A JSON scalar\"\nscalar JSON\n\n\"24-hour clock time value string in the format `hh:mm:ss` or `hh:mm:ss.sss`.\"\nscalar LocalTime\n\n\"A 64-bit signed integer\"\nscalar Long\n\ntype Query {\n  Click(limit: Int = 10, offset: Int = 0): [Click!]\n  Recommendation(url: String!, limit: Int = 10, offset: Int = 0): [Recommendation!]\n  Trending(limit: Int = 10, offset: Int = 0): [Trending!]\n  VisitAfter(limit: Int = 10, offset: Int = 0): [VisitAfter!]\n}\n\ntype Recommendation {\n  url: String!\n  rec: String!\n  frequency: Long!\n}\n\ntype Trending {\n  url: String!\n  total: Long!\n}\n\ntype VisitAfter {\n  beforeURL: String!\n  afterURL: String!\n  timestamp: DateTime!\n}\n\nenum _McpMethodType {\n  NONE\n  TOOL\n  RESOURCE\n}\n\nenum _RestMethodType {\n  NONE\n  GET\n  POST\n}\n\ndirective @api(mcp: _McpMethodType, rest: _RestMethodType, uri: String) on QUERY | MUTATION | FIELD_DEFINITION\n"
      }
    }
  }
}
