Documentation

WHERE clause

Use the WHERE clause to filter results based on fields, tags, or timestamps.

Syntax

SELECT_clause FROM_clause WHERE <conditional_expression> [(AND|OR) <conditional_expression> [...]]

Note: Unlike InfluxQL, SQL supports OR in the WHERE clause to specify multiple conditions, including time ranges.

Examples

Note that single quotes are required for string literals in the WHERE clause.

Filter data based on field values

SELECT *
FROM "h2o_feet"
WHERE "water_level" >= 9.78

View example results

Filter data based on specific tag and field values

SELECT *
FROM "h2o_feet"
WHERE "location" = 'santa_monica' and "level description" = 'below 3 feet'

View example results

Filter data within a specific time period

SELECT *
FROM h2o_feet
WHERE "location" = 'santa_monica'
AND "time" >= '2019-08-19T12:00:00Z'::timestamp AND "time" <= '2019-08-19T13:00:00Z'::timestamp

View example results

Filter data using the OR operator

SELECT *
FROM "h2o_feet"
WHERE "level description" = 'less than 3 feet' OR "water_level" < 2.5

View example results


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