//include::{partialsdir}/modules/snippets/db2-frag-signaling-fq-table-formats.adoc[]
= Shared snippets for Db2 and PG incremental snapshots


== Triggering an incremental snapshot (SQL)

=== `data-collections` note

tag::fq-table-name-format-note[]
[NOTE]
====
If the name of a table that you want to include in a snapshot contains a dot (`.`), a space, or some other non-alphanumeric character, you must escape the table name in double quotes. +
For example, to include a table that exists in the `*public*` schema and that has the name `*My.Table*`, use the following format: `*"public.\"My.Table\""*`.
====
end::fq-table-name-format-note[]




=== Using a source signaling channel to trigger an incremental snapshot

// Example in Step 1 of procedure

tag::snapshot-signal-example[]
====
[source,sql,indent=0,subs="+attributes"]
----
INSERT INTO myschema.debezium_signal (id, type, data) // <1>
values ('ad-hoc-1',   // <2>
    'execute-snapshot',  // <3>
    '{"data-collections": ["schema1.table1", "schema1.table2"], // <4>
    "type":"incremental", // <5>
    "additional-conditions":[{"data-collection": "schema1.table1" ,"filter":"color=\'blue\'"}]}'); // <6>
----
====
+
end::snapshot-signal-example[]





=== Running an ad hoc snapshot with additional conditions

tag::snapshot-additional-conditions-example[]
[source,sql,indent=0,subs="+attributes"]
----
INSERT INTO myschema.debezium_signal (id, type, data) VALUES('ad-hoc-1', 'execute-snapshot', '{"data-collections": ["schema1.products"],"type":"incremental", "additional-conditions":[{"data-collection": "schema1.products", "filter": "color=blue"}]}');
----
end::snapshot-additional-conditions-example[]






=== Running an ad hoc snapshot with multiple additional conditions

tag::snapshot-multiple-additional-conditions-example[]
[source,sql,indent=0,subs="+attributes"]
----
INSERT INTO myschema.debezium_signal (id, type, data) VALUES('ad-hoc-1', 'execute-snapshot', '{"data-collections": ["schema1.products"],"type":"incremental", "additional-conditions":[{"data-collection": "schema1.products", "filter": "color=blue AND quantity>10"}]}');
----
end::snapshot-multiple-additional-conditions-example[]






=== Kafka snapshot with additional conditions example


tag::triggering-incremental-snapshot-kafka-addtl-cond-example[]
[source,json]
----
Key = `test_connector`

Value = `{"type":"execute-snapshot","data": {"data-collections": ["schema1.products"], "type": "INCREMENTAL", "additional-conditions": [{"data-collection": "schema1.products" ,"filter":"color='blue'"}]}}`
----
end::triggering-incremental-snapshot-kafka-addtl-cond-example[]



=== Kafka snapshot with multiple additional conditions

tag::triggering-incremental-snapshot-kafka-multi-addtl-cond-example[]
[source,json]
----
Key = `test_connector`

Value = `{"type":"execute-snapshot","data": {"data-collections": ["schema1.products"], "type": "INCREMENTAL", "additional-conditions": [{"data-collection": "schema1.products" ,"filter":"color='blue' AND brand='MyBrand'"}]}}`
----
end::triggering-incremental-snapshot-kafka-multi-addtl-cond-example[]





=== Stopping an incremental snapshot

tag::stopping-incremental-snapshot-example[]
====
[source,sql,indent=0,subs="+attributes"]
----
INSERT INTO myschema.debezium_signal (id, type, data) // <1>
values ('ad-hoc-1',   // <2>
    'stop-snapshot',  // <3>
    '{"data-collections": ["schema1.table1", "schema1.table2"], // <4>
    "type":"incremental"}'); // <5>
----
====
+
end::stopping-incremental-snapshot-example[]



=== Stopping an incremental snapshot using the Kafka signaling channel

tag::stopping-incremental-snapshot-kafka-example[]
[source,json]
----
Key = `test_connector`

Value = `{"type":"stop-snapshot","data": {"data-collections": ["schema1.table1", "schema1.table2"], "type": "INCREMENTAL"}}`
----
end::stopping-incremental-snapshot-kafka-example[]
