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Snap type:

Read

Description:

This Snap provides functionality to lookup records in the target MySQL table and return a selected set of fields for every matched record. The Snap executes one request per multiple input documents to avoid making a request for every input record.

JSON paths can be used in the Snap properties and will have values from an incoming document substituted into the properties. However, documents missing values for a given JSON path will be written to the Snap's error view. After a query is executed, the query's results are merged into the incoming document.

Queries produced by the Snap have the format:

SELECT [Output fields] FROM [Table name] WHERE
[C1 = V11 AND C2 = V21 AND...[Cn = Vn1] OR
[C1 = V12 AND C2 = V22 AND...[Cn = Vn2] OR 
......................................  OR
[Cn = V1n AND Cm = V2m AND...[Cn = Vnm]

The Snap ignores any duplicated lookup condition in the input document stream since it maintains a cache for lookup conditions internally.

Expected upstream Snaps: Any Snap which produces documents in the output view, such as CSV Parser, JSON Parser, Structure, Mapper.
Expected downstream Snaps: Any Snap which receives documents in the input view, such as JSON Formatter, Structure, Mapper. The CSV Formatter will cause an error since the output data is not a flattened Map data.
Expected input: Each document in the input view should contain a Map data of key-value entries. Input data may contain values needed to evaluate expressions in the Object type, Output fields and Conditions properties. If the Pass-though on no lookup match property is unchecked, please make sure input data types match column data types in the database table. Otherwise, you may encounter an error message "Cannot find an input data which is related to the output record .....". If the error view is open, all input data in the batch are routed to the error view with the same error information.
Expected output: Each document in the output view contains a Map data of key-value entries, where keys are the Output fields property values. The input data that has produced the corresponding output data is also included in the output data under the "original" key.

Prerequisites:

[None]

Support and limitations:

Works in Ultra Tasks with pass-through.
When MySQL execute Snaps (MySQL - Execute and MySQL - Multi Execute) are followed by MySQL non-execute Snaps, such as MySQL - Insert, MySQL - Merge, and so on, the following error is displayed when executed:
Table definition has changed, please retry transaction.
This happens due to a known issue in the MySql Connector. For more information about this issue, see MySQL Bug #65378.

Account:

This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. See MySQL Account for information on setting up this type of account.

Views:

Input	This Snap has exactly one document input view. Each document should have values for one AND clause in the WHERE statement.
Output	This Snap has exactly one document output view. The output document includes the corresponding input data under the "original" key. If there is no results from the query, each output field will have null value.
Error	This Snap has at most one document error view and produces zero or more documents in the view.

Settings

Label

Required. 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.

Schema name

The database schema name. In case it is not defined, then the suggestion for the Table Name will retrieve all tables names of all schemas. The property is suggestable and will retrieve available database schemas during suggest values.

The values can be passed using the pipeline parameters but not the upstream parameter.

Example: SYS
Default value: [None]

Table name

Required. Enter or select the name of SQL table to execute the lookup query on.

The values can be passed using the pipeline parameters but not the upstream parameter.

Example: people
Default value: [None]

Output fields

Required. Enter or select output field names for SQL SELECT statement.
Example: email, address, first, last
Default: [None]

Lookup conditions

Required. The lookup conditions are created by using the lookup column name and the lookup column value. Each row will build a condition, such as lookupColumn1 = $inputField. Each additional row will be concatenated using a logical AND. All rows together build the lookup condition being used to lookup records in the lookup table.

Value

Required. Enter or select the JSON path of the lookup column value. The value will be provided by the input data field.
Example
Default value: [None]

Lookup column name

Required. Enter or select the lookup column name.
Example: email, first, last
Default value: [None]

Pass-through on no lookup match

When there is no lookup matching an input document, the input document will pass through to the output view if this property is checked. Otherwise, it will be written to the error view as an error condition.

Default value: False

Snap Execution

Select one of the following three modes in which the Snap executes:

Validate & Execute: Performs limited execution of the Snap, and generates a data preview during Pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during Pipeline runtime.
Execute only: Performs full execution of the Snap during Pipeline execution without generating preview data.
Disabled: Disables the Snap and all Snaps that are downstream from it.

Default Value: Execute only
Example: Validate & Execute

Example

The following example shows how a MySQL object record can be looked up using the MYSQL Lookup Snap and record the data using the MYSQL Execute Snap. In this pipeline, the MySQL Lookup Snap retrieves data from a table called 'Test1'.

The MySQL Execute Snap executes a select SQL statement to get the information from table Test1.

The MySQL Lookup Snap runs the lookup query on, and the lookup conditions specify the column names to be looked up in the look-up table Test1.

Additionally, in the Output fields, select the names of the specific output field name(s) for the output preview to contain only those fields('isactive' 'id') to be recorded on the target table.

Successful execution of the pipeline displays the below output preview:

Snap Pack History

Click to view/expand

Release	Snap Pack Version	Date	Type	Updates
February 2025	440patches30071	14 Mar 2025	Latest	Fixed the Null Pointer Exception (NPE) issue in the MySQL Snaps. Now, these Snaps display an exception error instead of NPE when the URL properties (key and value) and either key or value are empty.
February 2025	440patches30047	11 Mar 2025	Latest	Fixed an issue with the MySQL Bulk Load Snap that failed to display an exception when inserting null values into non-null columns.
February 2025	main29887	12 Feb 2025	Stable	Updated and certified against the current SnapLogic Platform release.
November 2024	main29029	13 Nov 2024	Stable	Updated and certified against the current SnapLogic Platform release.
August 2024	main27765	21 Aug 2024	Stable	Updated and certified against the current Snaplogic Platform release.
May 2024	437patches26298	09 May 2024	Latest	Fixed an issue with the MySQL - Multi Execute Snap and the MySQL - Execute Snaps that displayed a `null pointer exception` when the Snap did not check `null` table metadata.
May 2024	main26341	08 May 2024	Stable	Updated the Delete Condition (Truncates a Table if empty) field in the MySQL - Delete Snap 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	436patches25659	27 Mar 2024	Latest	Fixed an issue with the MySQL- Multi Execute Snap that committed the changes when the Snap was expected to roll back if any query failed and the Number of Retries was more than 0. The Snap now performs a rollback when one or more queries fail. Fixed an issue with the MySQL-Insert Snap that displayed an error when you inserted values such as 128 or more in the Tinyint unsigned datatype when the datatype must accept all the values in the range of 0-255. Fixed an issue with MySQL-Insert Snap that failed to store the `Time` datatype with precision in the target table when passed from an upstream Mapper Snap in the `string` format or `Date-only` date format.
February 2024	main25112	14 Feb 2024	Stable	Updated and certified against the current SnapLogic Platform release.
November 2023	main23721	08 Nov 2023	Stable	Updated and certified against the current SnapLogic Platform release.
August 2023	main22460	16 Aug 2023	Stable	The MySQL - Execute Snap now includes a new Query type field. When Auto is selected, the Snap tries to determine the query type automatically.
May 2023	main21015	10 May 2023	Stable	Upgraded with the latest SnapLogic Platform release.
February 2023	432patches19870	23 Feb 2023	Latest	Fixed an issue with the preview data of the MySQL-Execute Snap that displayed the date format as `%m %d %Y` (without the forward slash '/'). The Snap now displays the date as intended in `%m/%d/%Y` format after validation.
February 2023	main19844	09 Feb 2023	Stable	Upgraded with the latest SnapLogic Platform release.
November 2022	431patches19263	19 Dec 2022	Latest	The MySQL Insert Snap no longer includes the Preserve case-sensitivity checkbox because 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	10 Nov 2022	Stable	The MySQL - 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.
September 2022	430patches17894	15 Sep 2022	Latest	The MySQL Select Snap now work as expected when the table name is dependent on an upstream input;
August 2022	430patches17387	17 Aug 2022	Latest	The following issues are fixed in the MySQL Bulk Load Snap: Writing the first batch of records to a temporary file after the Snap fails. Now the Snap writes to the error view as is the expected behavior. Temporary files generation when a record does not contain a table column. Now, the Snaplex removes the temporary files created along with the directory after the Pipeline execution.
August 2022	main17386	11 Aug 2022	Stable	Upgraded with the latest SnapLogic Platform release.
4.29	main15993	14 May 2022	Stable	Upgraded with the latest SnapLogic Platform release.
4.28 Patch	428patches15101	12 Apr 2022	Latest	Fixed an issue with SQL Server - Execute Snap where the Pipeline was failing when there were consecutive execute Snaps with a procedure call, followed by select statements.
4.28	main14627	12 Feb 2022	Stable	Updated the label for Delete Condition to Delete Condition (Truncates Table if empty) in the MySQL Delete Snap.
4.27	main12833	13 Nov 2021	Stable	Enhanced the MySQL Database Account to skip batch execution, when the Batch size value is one. When the Batch size is greater than one, the batch is executed. Enhanced the MySQL - Execute Snap to invoke stored procedures.
4.26	main11181	14 Aug 2021	Stable	Upgraded with the latest SnapLogic Platform release.
4.25	425patches11008	04 Aug 2021	Latest	Enhanced the MySQL - Lookup Snap suggestions to load the Output Fields and Lookup Column settings. Fixed an issue with MySQL - Select Snap where the second output view of the Snap was showing empty column values and improved the error messages in the Snap where the Snap fails with Null Pointer Exception when the account reference provided is invalid.
4.25	main9554	08 May 2021	Stable	Upgraded with the latest SnapLogic Platform release.
4.24	main8556	13 Feb 2021	Stable	Enhances the MySQL - Select Snap to return only the fields (provided in the Output Fields) in the output schema (second output view), through a new check box Fetch Output Fields In Schema. If the Output Fields property is empty all the columns are visible. Enhances the MySQL - Stored Procedure to accept parameters from input documents by column keys. If the values are empty, the parameters are populated based on the column keys for easier mapping in the upstream Mapper Snap.
4.23 Patch	423patches7732	14 Dec 2020	Latest	Fixes an issue in the MySQL - Bulk Load Snap to support the following versions: MySQL 8.0.17 MySQL 5.6.34
4.23	main7430	14 Nov 2020	Stable	Upgraded with the latest SnapLogic Platform release.
4.22 Patch	422patches6629	01 Sep 2020	Latest	Fixes the MySQL Snap Pack by acknowledging the lineage information of the original document in an empty output view when Pass Through is enabled.
4.22	main6403	12 Sep 2020	Stable	Upgraded with the latest SnapLogic Platform release.
4.21 Patch	421patches6272	27 Jul 2020	Latest	Fixes the issue where Snowflake SCD2 Snap generates two output documents despite no changes to Cause-historization fields with DATE, TIME and TIMESTAMP Snowflake data types, and with Ignore unchanged rows field selected.
4.21 Patch	421patches6144	20 Jul 2020	Latest	Fixes 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	mysql8842	20 May 2020	Latest	Fixes the SSH tunneling issue by ensuring connectivity between JCC and MySQL server. Updates the UI for MySQL Accounts to simplify the SSH tunneling configuration as described in Configuring MySQL Accounts.
4.21 Patch	MULTIPLE8841	20 May 2020	Latest	Fixes the connection issue in Database Snaps by detecting and closing open connections after the Snap execution ends.
4.21	snapsmrc542	09 May 2020	Stable	Upgraded with the latest SnapLogic Platform release.
4.20 Patch	db/mysql8815	22 Apr 2020	Latest	Fixes the MySQL Stored Procedure Snap to resolve compatibility issues with the Amazon Aurora database.
4.20 Patch	db/mysql8786	30 Mar 2020	Latest	Fixes the MySQL - Bulk Load Snap to use the UTF-8 character set for writing temporary files in order to successfully handle special characters, irrespective of the value specified in the Character set field in the Snap settings.
4.20	snapsmrc535	08 Feb 2020	Stable	Upgraded with the latest SnapLogic Platform release.
4.19 Patch	db/mysql8638	21 Jan 2020	Latest	Fixes the MySQL Database Account where the associated Snaps produce a huge count of open file descriptors when the Configure SSH Tunnel property is enabled.
4.19 Patch	db/mysql8635	21 Jan 2020	Latest	Fixes the MySQL - Execute Snap where the retry option fails to establish a connection with the MySQL database, after an interrupted transmission.
4.19 Patch	db/mysql8407	13 Dec 2019	Latest	Fixes an issue with the MySQL - Update Snap wherein the Snap is unable to perform operations when: An expression is used in the Update condition property. Input data contain the character '?'.
4.19 Patch	db/mysql8390	13 Dec 2020	Latest	Fixes an issue wherein the MySQL Snaps are unable to reconnect to the MySQL database after the breakdown of a connection.
4.19 Patch	db/mysql8340	03 Dec 2019	Latest	Fixes an issue with the MySQL Bulk Load Snap wherein the Snap is unable to execute the bulk load feature with MySQL 8.0 and higher versions.
4.19	snaprsmrc528	14 Nov 2019	Stable	Upgraded with the latest SnapLogic Platform release.
4.18 Patch	db/mysql7846	23 Sep 2019	Latest	Fixed an issue with the MySQL Snaps wherein the Snaps exhibit degraded performance with snapsmrc523.
4.18	snapsmrc523	10 Aug 2019	Stable	Reverted a 4.17-patch (db/mysql7395) update regarding how BIT and BOOLEAN column data type values are displayed. They now display as true or false (4.17GA behavior in snapsmrc515) rather than converting to 0 or 1 values (4.17-patch behavior).
4.17 Patch	db/mysql7395	10 Jun 2019	Latest	Fixed an issue wherein bit data types in the MySQL - Select table convert to true or false instead of 0 or 1.
4.17 Patch	db/mysql7357	03 Jun 2019	Latest	Fixed an issue with the MySQL Execute snap wherein the Retry property for connection fails after the database connection is severed.
4.17	ALL7402	11 Jun 2019	Latest	Pushed automatic rebuild of the latest version of each Snap Pack to SnapLogic UAT and Elastic servers.
4.17	snapsmrc515	11 Jun 2019	Latest	Fixed an issue with the MySQL 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	MULTIPLE7123	22 Feb 2019	Latest	Added two new properties, Number of retries and Retry interval, to Delete, Insert, Select, Execute, Merge, Update, and MutliExecute Snaps that enables you to handle retry attempts during a connection failure.
4.16 Patch	db/mysql6823	22 Feb 2019	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	16 Feb 2019	Stable	Upgraded with the latest SnapLogic Platform release.
4.15 Patch	MULTIPLE6413	02 Jan 2019	Latest	Added 2 new properties, JDBC Driver Class and JDBC JARs. The new properties enable uploading JDBC JARs that help connect to MYSQL8.
4.15 Patch	db/mysql6332	05 Dec 2018	Latest	Replaced Max idle time and Idle connection test period properties with Max life time and Idle 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	15 Dec 2018	Stable	Upgraded with the latest SnapLogic Platform release.
4.14	snapsmrc490	11 Aug 2018	Stable	Upgraded with the latest SnapLogic Platform release.
4.13	snapsmrc486	12 May 2018	Stable	Upgraded with the latest SnapLogic Platform release.
4.12 Patch	db/mysql4924	03 Apr 2018	Latest	Fixed the MySQL Bulk Load Snap so that it doesn't produce an output document if there are no input documents.
4.12	snapsmrc480	17 Feb 2018	Stable	Upgraded with the latest SnapLogic Platform release.
4.11	snapsmrc465	11 Nov 2017	Stable	New! MySQL Stored Procedure Snap added to call/execute MySQL Stored Procedure. SSH Tunnelling related properties added at the Account level for both MySQL Dynamic Account and MySQL Database Account.
4.10 Patch	mysql3988	21 Sep 2017	Latest	SSH Tunnelling related properties added at the Account level for both MySQL Dynamic Account and MySQL Database Account.
4.10	snapsmrc414	12 Aug 2017	Stable	Added Auto commit property to the Select and Execute Snaps at the Snap level to support overriding of the Auto commit property at the Account level.
4.9.0 Patch	mysql3070	01 Jun 2017	Latest	Fixed an issue regarding connection not closed after login failure; Expose autocommit for "Select into" statement in PostgreSQL Execute Snap and Redshift Execute Snap
4.9	snapsmrc405	13 May 2017	Stable	Upgraded with the latest SnapLogic Platform release.
4.8.0 Patch	mysql2755	27 Mar 2017	Latest	Potential fix for JDBC deadlock issue.
4.8.0 Patch	mysql2695	22 Feb 2017	Latest	Addresses an issue where some changes made in the platform patch MRC294 to improve perfomance caused Snaps in the listed Snap Packs to fail.
4.8	snapsmrc398	11 Feb 2017	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	mysql2189	28 Nov 2016	Latest	Fixed an issue for database Select Snaps regarding Limit rows not supporting an empty string from a pipeline parameter.
4.7.0 Patch	mysql2280	13 Dec 2016	Latest	MySQL Merge will now route documents to the output and error views correctly
4.7	snapsmrc382	23 Nov 2016	Stable	Added a new Snap, MySQL Bulk Load.
4.6	snapsmrc362	13 Aug 2016	Stable	Enhanced MySQL Execute Snap to fully support SQL statements with/without expressions & SQL bind variables. Extended support for MySQL Dynamic accounts. Resolved an issue in MySQL Select Snap that caused failures in the second output view when retrieving outputs from a table with a dot (.) character. Resolved an issue in MySQL Execute Snap that caused failures when passing expression ($variable_name) for stored procedures. Resolved an issue in MySQL Execute Snap that caused failures when an SQL statement had an inline comment. Resolved an issue in MySQL Execute Snap that ignored all statements after "–".
4.5.1	snapsmrc344	18 May 2016	Stable	Fixed an error in a tooltip for MySQL - Select Snap.
4.5	snapsmrc344	18 May 2016	Latest	Resolved an issue in MySQL Insert Snap to ensure an error is reported when table column is set to NOT NULL.
4.4.1	NA	18 Mar 2016	Stable	Upgraded with the latest SnapLogic Platform release.
4.4	NA	13 Feb 2016	Stable	Upgraded with the latest SnapLogic Platform release.
4.3.2	NA	15 Jan 2016	Stable	NEW! MySQL Lookup Snap Improved performance of the MySQL Execute Snap.
4.3	NA	NA	Stable	Table List Snap: A new option, Compute table graph, now lets you determine whether or not to generate dependents data into the output.
4.2.2	NA	NA	Stable	Ignore empty result added to Execute and Select Snaps. The option will not write any document to the output view for select statements producing no results. Resolved a Java exception in MySQL Merge Snap.

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