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Vertica - Execute
Vertica - Execute
Jun 07, 2024
Snap type
Write
Description
This Snap enables you to execute SQL statements in a Vertica database. Tables can be created and dropped with this Snap. SELECT queries can also be executed. This Snap works only with single queries.
You can drop your database with it, so be cautious.
If a SELECT query is executed, the query's results are merged into the incoming document and any existing keys will have their values overwritten. Additionally, the original document is written if there are no results from the query.
The Vertica Execute Snap is for simple DML (SELECT, INSERT, UPDATE, DELETE) type statements.
This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. See Configuring Vertica Accounts for information on setting up this type of account.
Views
Input
This Snap has at most one input view. If the input view is defined, then the WHERE clause can substitute incoming values for a given expression.
Output
This Snap has at most one output view.
Error
This Snap has at most one error view and produces zero or more documents in the view.
Database Write Snaps output all records of a batch (as configured in your account settings) to the error view if the write fails during batch processing.
Settings
Label*
Specify the name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your Pipeline.
SQL statement*
Specify the SQL statement to execute on the server.
There are two possible scenarios that you encounter when working with SQL statements in SnapLogic. You must understand the following scenarios to successfully execute your SQL statements:
Scenarios to successfully execute your SQL statements
Scenario 1: Executing SQL statements without expressions
If the expression toggle of the SQL statement field is not selected:
The SQL statement must not be within quotes.
The $<variable_name> parts of the SQL statement are expressions. In the below example, $id and $book.
Examples:
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Additionally, the JSON path is allowed only in the WHERE clause. If the SQL statement starts with SELECT (case-insensitive), the Snap regards it as a select-type query and executes once per input document. If not, it regards it as write-type query and executes in batch mode.
Scenario 2: Executing SQL queries with expressions
If the expression toggle of the SQL statement field is selected:
The SQL statement must be within quotes.
The + $<variable_name> + parts of the SQL statement are expressions, and must not be within quotes. In the below example, $tablename.
The $<variable_name> parts of the SQL statement are bind parameter, and must be within quotes. In the below example, $id and $book.
Table name and column names must not be provided as bind parameters. Only values can be provided as bind parameters.
Examples:
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We recommend you to add a single query in the SQL Statement field.
Known issue: When the SQL statement property is an expression, the pipeline parameters are shown in the suggest, but not the input schema.
Snap History
The non-expression form uses bind parameters, so it is much faster than executing N arbitrary SQL expressions.
Using expressions that join strings together to create SQL queries or conditions has a potential SQL injection risk and hence unsafe. Ensure that you understand all implications and risks involved before using concatenation of strings with '=' Expression enabled.
Single quotes in values must be escaped
Any relational database (RDBMS) treats single quotes (') as special symbols. So, single quotes in the data or values passed through a DML query may cause the Snap to fail when the query is executed. Ensure that you pass two consecutive single quotes in place of one within these values to escape the single quote through these queries.
For example:
If String
To pass this value
Use
Has no single quotes
Schaum Series
'Schaum Series'
Contains single quotes
O'Reilly's Publication
'O''Reilly''s Publication'
Query type
Select the type of query for your SQL statement (ReadorWrite).
WhenAutois selected, the Snap tries to determine the query type automatically. If the execution result of the query is not as expected, you can change the query type toReadorWrite.
Default Value: Auto Example:Read
Pass through
Select this checkbox to pass the output view under the key 'original'. This property applies only to the Execute Snaps with SELECT statement.
Default Value: Selected
Ignore empty result
If selected, no document will be written to the output view when a SELECT operation does not produce any result. If this property is not selected and the Pass through property is selected, the input document will be passed through to the output view.
Default Value: Not selected
Number of retries
Specify the maximum number of retry attempts the Snap must make in case there is a network failure and is unable to read the target file. The request is terminated if the attempts do not result in a response.
If the Number of retries value is set to 0 (the default value), the retry option is disabled, and the Snap does not initiate a retry. The pipeline will not attempt to retry the operation in case of a failure—any failure encountered during the database operation will immediately result in the pipeline failing without any retry attempts to recover from the errors.
If the Number of retries value is greater than 0, the Snap initiates a download of the target file into a temporary local file. If any error occurs during the download, the Snap waits for the time specified in the Retry interval and then attempts to download the file again from the beginning. After the download is successful, the Snap streams the data from the temporary file to the downstream pipeline. All temporary local files are deleted when they are no longer needed.
Ensure that the local drive has sufficient free disk space to store the temporary local file.
Default Value: 0 Example: 2
Retry interval (seconds)
Specify the maximum resting time in seconds between subsequent retries.
Default Value:1 Example:2
Auto commit
Select one of the options for this property to override the state of the Auto commit property on the account. The Auto commit at the Snap level has three values: True, False, and Use account setting. The expected functionality for these modes are:
True - The Snap will execute with auto-commit enabled regardless of the value set for Auto commit in the Account used by the Snap.
False - The Snap will execute with auto-commit disabled regardless of the value set for Auto commit in the Account used by the Snap.
Use account setting - The Snap will execute with Auto commit property value inherited by the Account used by the Snap.
Default Value: Use account setting
'Auto commit' may be enabled for certain use cases if PostgreSQL jdbc driver is used in either Redshift, PostgreSQL or generic JDBC Snap. But the JDBC driver may cause out of memory issues when Select statements are executed. In those cases, “Auto commit" in Snap property should be set to ‘False’ and the Fetch size in the “Account setting" can be increased for optimal performance.
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Snap Pack History
Click to view/expand
Release
Snap Pack Version
Date
Type
Updates
May 2025
main31019
Stable
Updated and certified against the current SnapLogic Platform release.
February 2025
main29887
Stable
Updated and certified against the current SnapLogic Platform release.
November 2024
main29029
Stable
Updated and certified against the current SnapLogic Platform release.
August 2024
main27765
Stable
Updated and certified against the current Snaplogic Platform release.
May 2024
437patches26900
Latest
The jOOQ library for Vertica Snap Pack is upgraded from v3.9.1 to v3.17.x. This upgrade will be part of the GA release on August 14, 2024 (Stable release). Learn more about this upgrade.
May 2024
main26341
Stable
Updated the Delete Condition (Truncates a Table if empty) field in the Vertica - DeleteSnap to Delete condition (deletes all records from a table if left blank) to indicate that all entries will be deleted from the table when this field is blank, but no truncate operation is performed.
February 2024
main25112
Stable
Updated and certified against the current SnapLogic Platform release.
November 2023
main23721
Stable
Updated and certified against the current SnapLogic Platform release.
August 2023
main22460
Stable
The Vertica - Execute Snap now includes a new Query type field. When Auto is selected, the Snap tries to determine the query type automatically.
May 2023
433patches22343
Latest
Fixed an issue with the Vertica-Bulk Load Snap that previously displayed an empty output when no input was provided.
Behavior Change: If the Snap receives no input, then no output is sent to the output view.
May 2023
main21015
Stable
Upgraded with the latest SnapLogic Platform release.
February 2023
main19844
Stable
Upgraded with the latest SnapLogic Platform release.
November 2023
431patches19263
Latest
The Vertica - Insert Snap no longer includes the Preserve case-sensitivitycheckboxbecause the database is case-insensitive. The database stores the data regardless of whether the columns in the target table and the input data are in mixed, lower, or upper case.
November 2022
main18944
Stable
The Vertica - Insert Snap now creates the target table only from the table metadata of the second input view when the following conditions are met:
The Create table if not present checkbox is selected.
The target table does not exist.
The table metadata is provided in the second input view.
August 2022
main17386
Stable
Upgraded with the latest SnapLogic Platform release.
4.29
main15993
Stable
Upgraded with the latest SnapLogic Platform release.
4.28
main14627
Stable
Updated the label for Delete Condition to Delete Condition (Truncates Table if empty) in the Vertica DeleteSnap.
Upgraded with the latest SnapLogic Platform release.
4.25
main9554
Stable
Upgraded with the latest SnapLogic Platform release.
4.24
main8556
Stable
Enhanced theVertica - Select Snap to return only the selected output fields or columns in the output schema (second output view) using the Fetch Output Fields In Schema check box. If the Output Fields field is empty all the columns are visible.
4.23
main7430
Stable
Upgraded with the latest SnapLogic Platform release.
4.22
main6403
Stable
Upgraded with the latest SnapLogic Platform release.
4.21 Patch
421patches6272
Latest
Fixed the issue whereSnowflake SCD2Snap generates two output documents despite no changes toCause-historizationfieldswithDATE, TIME and TIMESTAMPSnowflake data types, and withIgnore unchanged rowsfield selected.
4.21 Patch
421patches6144
Latest
Fixed the following issues with DB Snaps:
The connection thread waits indefinitely causing the subsequent connection requests to become unresponsive.
Connection leaks occur during Pipeline execution.
4.21 Patch
MULTIPLE8841
Latest
Fixed the connection issue in Database Snaps by detecting and closing open connections after the Snap execution ends.
4.21
snapsmrc542
Stable
Upgraded with the latest SnapLogic Platform release.
4.20
snapsmrc535
Stable
Upgraded with the latest SnapLogic Platform release.
4.19 Patch
vertica8415
Latest
Fixed an issue with the Vertica - Update Snap wherein the Snap is unable to perform operations when:
An expression is used in theUpdate conditionproperty.
Input data contain the character '?'.
4.19
snaprsmrc528
Stable
Upgraded with the latest SnapLogic Platform release.
4.18
snapsmrc523
Stable
Upgraded with the latest SnapLogic Platform release.
4.17
ALL7402
Latest
Pushed automatic rebuild of the latest version of each Snap Pack to SnapLogic UAT and Elastic servers.
4.17
snapsmrc515
Latest
Fixed an issue with the Vertica Execute Snap wherein the Snap would send the input document to the output view even if the Pass through field is not selected in the Snap configuration. With this fix, the Snap sends the input document to the output view, under the key original, only if you select the Pass through field.
Added the Snap Execution field to all Standard-mode Snaps. In some Snaps, this field replaces the existing Execute during preview check box.
4.16 Patch
vertica6820
Latest
Fixed an issue with the Lookup Snap passing data simultaneously to output and error views when some values contained spaces at the end.
4.16
snapsmrc508
Stable
Upgraded with the latest SnapLogic Platform release.
4.15 Patch
db/vertica6339
Latest
ReplacedMax idle timeandIdle connection testperiodproperties withMax life timeandIdle Timeout properties respectively, in the Account configuration. The new properties fix the connection release issues that were occurring due to default/restricted DB Account settings.
4.15
snapsmrc500
Stable
Upgraded with the latest SnapLogic Platform release.
4.14
snapsmrc490
Stable
Upgraded with the latest SnapLogic Platform release.
4.13
snapsmrc486
Stable
Upgraded with the latest SnapLogic Platform release.
4.12
snapsmrc480
Stable
Upgraded with the latest SnapLogic Platform release.
4.11
snapsmrc465
Stable
Upgraded with the latest SnapLogic Platform release.
4.10
snapsmrc414
Stable
AddedAuto commitproperty to the Select and Execute Snaps at the Snap level to support overriding of theAuto commitproperty at the Account level.
4.9
snapsmrc405
Stable
Upgraded with the latest SnapLogic Platform release.
4.8.0 Patch
vertica2796
Latest
Potential fix for JDBC deadlock issue.
4.8.0 Patch
vertica2716
Latest
Fixed Vertica Snap Pack rendering dates that are one hour off from the date returned by database query for non-UTC Snaplexes.
4.8
snapsmrc398
Stable
Info tab added to accounts.
Database accounts now invalidate connection pools if account properties are modified and login attempts fail.
4.7.0 Patch
vertica2511
Latest
Fixed NumberOverflow Execption for Integer Datatypes
4.7.0 Patch
vertica2205
Latest
Fixed an issue for database Select Snaps regarding Limit rows not supporting an empty string from a pipeline parameter.
4.7
snapsmrc382
Stable
Upgraded with the latest SnapLogic Platform release.
4.6
snapsmrc362
Stable
Enhanced Vertica Execute Snap to fully support SQL statements with/without expressions & SQL bind variables.
4.5.1
snapsmrc344
Latest
Upgraded with the latest SnapLogic Platform release.
4.5
snapsmrc344
Stable
Resolved an issue in Vertica Bulk Upsert Snap that occurred during loading.
4.4.1
N/A
Latest
Upgraded with the latest SnapLogic Platform release.
4.4
N/A
Stable
Upgraded with the latest SnapLogic Platform release.
4.3.2
N/A
Latest
Improved error handling for Vertica Bulk Load Snap.
Resolved a syntax error in Vertica Bulk Upsert.
Resolved several failures in the Vertica Insert Snap.
Resolved a "No column values found" error in Vertica Bulk Load.
Resolved a issue in Vertica Insert with Boolean values of "t" and "f" being inserted as null.
N/A
N/A
NA
Added Vertica Snap Pack: Vertica Multi Execute Snap (Beta) added.
N/A
N/A
NA
Fix log:Vertica Snap: Could not initialize Snap error is displayed.