Updating table variables sql 2016
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Statistics are small, lightweight objects that describe the distribution of data in a SQL Server table. First Name By Year and you run this query: SQL Server needs to estimate how many rows will come back for First Name Id=74846. Statistics are lightweight little pieces of information that SQL Server keeps on tables and indexes to help the optimizer do a good job. First Name By Year table was freshly created when we ran our query, it would have no column statistics.Also, OPENJSON can be used to combine relational and JSON data in the same query.If we assume that the JSON array shown in the previous example is stored in the Orders column, the following query can combine the columns and JSON fields: OPENJSON will open an array in each cell and return one row for each JSON object (i.e. CROSS APPLY OPENJSON syntax is used to “join” rows in the table with the child inner table that will be materialized from a JSON array in the JSON cell.I’m also not talking about statistics for memory optimized tables in this article. Back when I read philosophy, I found Aristotle a bit annoying because he talked so much about “moderation”. You shouldn’t run statistics maintenance against a database at the same time you’re checking for corruption, rebuilding indexes, or running other IO intensive processes.
If you have multiple SQL Servers using shared storage, that maintenance may hit the storage at the same time. ⇒ The moderate approach: One widely used free script is Ola Hallengren’s SQL Server Index and Statistics Maintenance script.
Full text index is applicable on arrays of numbers and simple string values.
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