sql

DEPRECATED

This component is deprecated and will be removed in the next major version release. Please consider moving onto alternative components.

Executes an arbitrary SQL query for each message.

Introduced in version 1.0.0.

Common

# Common config fields, showing default values
output:
  label: ""
  sql:
    driver: "" # No default (required)
    data_source_name: "" # No default (required)
    query: INSERT INTO footable (foo, bar, baz) VALUES (?, ?, ?); # No default (required)
    args_mapping: root = [ this.cat.meow, this.doc.woofs[0] ] # No default (optional)
    max_in_flight: 64
    batching:
      count: 0
      byte_size: 0
      period: ""
      check: ""

Advanced

# All config fields, showing default values
output:
  label: ""
  sql:
    driver: "" # No default (required)
    data_source_name: "" # No default (required)
    query: INSERT INTO footable (foo, bar, baz) VALUES (?, ?, ?); # No default (required)
    args_mapping: root = [ this.cat.meow, this.doc.woofs[0] ] # No default (optional)
    max_in_flight: 64
    batching:
      count: 0
      byte_size: 0
      period: ""
      check: ""
      processors: [] # No default (optional)

Alternatives

For basic inserts use the sql_insert output. For more complex queries use the sql_raw output.

Fields

driver

A database driver to use.

Type: string
Options: mysql, postgres, clickhouse, mssql, sqlite, oracle, snowflake, trino, gocosmos, spanner.

data_source_name

Data source name.

Type: string

query

The query to execute. The style of placeholder to use depends on the driver, some drivers require question marks (?) whereas others expect incrementing dollar signs ($1, $2, and so on) or colons (:1, :2 and so on). The style to use is outlined in this table:

Driver	Placeholder Style
clickhouse	Dollar sign
mysql	Question mark
postgres	Dollar sign
mssql	Question mark
sqlite	Question mark
oracle	Colon
snowflake	Question mark
spanner	Question mark
trino	Question mark
gocosmos	Colon

Type: string

# Examples

query: INSERT INTO footable (foo, bar, baz) VALUES (?, ?, ?);

args_mapping

An optional Bloblang mapping which should evaluate to an array of values matching in size to the number of placeholder arguments in the field query.

Type: string

# Examples

args_mapping: root = [ this.cat.meow, this.doc.woofs[0] ]

args_mapping: root = [ meta("user.id") ]

max_in_flight

The maximum number of inserts to run in parallel.

Type: int
Default: 64

batching

Allows you to configure a batching policy.

Type: object

# Examples

batching:
  byte_size: 5000
  count: 0
  period: 1s

batching:
  count: 10
  period: 1s

batching:
  check: this.contains("END BATCH")
  count: 0
  period: 1m

batching.count

A number of messages at which the batch should be flushed. If 0 disables count based batching.

Type: int
Default: 0

batching.byte_size

An amount of bytes at which the batch should be flushed. If 0 disables size based batching.

Type: int
Default: 0

batching.period

A period in which an incomplete batch should be flushed regardless of its size.

Type: string
Default: ""

# Examples

period: 1s

period: 1m

period: 500ms

batching.check

A Bloblang query that should return a boolean value indicating whether a message should end a batch.

Type: string
Default: ""

# Examples

check: this.type == "end_of_transaction"

batching.processors

A list of processors to apply to a batch as it is flushed. This allows you to aggregate and archive the batch however you see fit. Please note that all resulting messages are flushed as a single batch, therefore splitting the batch into smaller batches using these processors is a no-op.

Type: array

# Examples

processors:
  - archive:
      format: concatenate

processors:
  - archive:
      format: lines

processors:
  - archive:
      format: json_array