![]() Here, you can see that PubMed automatically mapped “narcolepsy” to the corresponding subject heading, as well as searches for it in all fields of citations. To the right of the results is a “Search details” box. Of the first several results, only the second clearly relates to the use of medications to control narcolepsy. The first search is for narcolepsy and medications or drugs without use of PubMed’s medical subject headings (MeSH). The two searches below are for the same topic, medications for narcolepsy, with and without PubMed’s subject headings. However, use of PubMed’s subject headings are not required for all basic searches. As discussed above, PubMed has an extensive system of subject headings. PubMed is a database of millions of citations of resources, primarily journal articles, in the health sciences and life sciences. Will return results with any one letter in the place of the question mark–in this case, results that contain either “woman” or “women.” Is also useful for searching singular or plural words, as well as American and British spellings. Will return results that contain “interact,” but also results that contain “interactions,” “interactivity,” “interacting,” and other variations. Will return only results that contain the exact phrase “online education,” not those that contain “online” and “education” separately. Will return results that contain “cloning” but not those that also contain “sheep.” NOT narrows searches. Will return results that contain “cancer,” “carcinoma,” or both terms. Will only return results that contain both “Macbeth” and “witchcraft.” AND narrows searches. Booleans work in OneSearch as well as databases. These queries were applied to the Domain and the Edit Domain Attributes tool was used to view the IDs of the facilities added to the Domain.Boolean operators are an excellent way to improve the relevance of your keyword search results. In this example the pipe IDs in the model contain the partial string ‘XY’ at different parts of the ID field. The partial string is at a specific part within the string field.The partial string is found near the end of the string field.The partial string is at the beginning of the string field.When a field contains the partial string,.The following sections will show how the DB Query functions SUBSTR(), and the contain operator ($) can be used to find the following: There are three functions that prove helpful when searching a partial string in a string field. To find Boolean fields where the field is false or No (0), enter the operator “.NOT.” prior to Boolean Field: How to search a partial string match in an InfoWater field using DB Query This query will search for facilities whose fields are true or Yes (1): When creating a DB query based on a Boolean field simply select the Boolean field. InfoWater has built in boolean fields for check valves for pipe attributes and ‘allow overflow’ for tank attributes, nevertheless custom Boolean fields can be created in the InfoWater information tables for any of the InfoWater feature types: How to construct a Boolean DB QueryĪ Boolean field is intended to store a value of 1 or 0, where 1 corresponds to the term “Yes” and 0 to the term “No”. Often used database query statements include boolean fields and searching a string in a field. A DB query allows the user to extract a set of records using logical statements on a field (or fields) stored within a specific database. In InfoWater a user can select network components and related data by creating logical query statements through the DB Query feature.
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