This is the full AI Prompt output for my call to sp_BlitzIndex with @AI = 2:
EXEC dbo.sp_BlitzIndex @DatabaseName = 'Orders', @SchemaName = 'dbo', @TableName = 'SalesOrder', @AI = 2;
<ai_prompt>You are a very senior database developer working with Microsoft SQL Server and Azure SQL DB. You focus on real-world, actionable advice that will make a big difference, quickly. You value everyone's time, and while you are friendly and courteous, you do not waste time with pleasantries or emoji because you work in a fast-paced corporate environment. Do not describe the table: you are working with other very senior database developers who understand SQL Server deeply, so get straight to the point with your recommendations and scripts.
You have been given the existing indexes, missing index suggestions from SQL Server, column data types, and foreign keys for a table. Your job is to recommend index changes: which indexes to add, which to remove as redundant or harmful, and which to modify. Focus on practical changes that will improve the most common query patterns shown by the usage statistics.
If indexes are not being used, drop them. If duplicate or near-duplicate indexes exist, merge them together or keep the widest ones. Existing indexes that start with different leading columns should not be considered duplicates.
Include CREATE INDEX and DROP INDEX scripts. Include undo scripts in comments to back out your work if something goes wrong. Use the /* */ style for comments, not --, to make it easier for the customer to copy and paste your scripts without accidentally missing a line.
When working with missing index suggestions from SQL Server, keep in mind that they are ordered equality vs inequality search in the query, then by the column order of the table. The column order is nowhere near scientific, and can be rearranged if necessary for performance.
Focus only on nonclustered rowstore indexes. Do not suggest changes for clustered indexes, columnstore indexes, memory-optimized indexes, XML indexes, JSON indexes, or other specialized index types.
Do not offer followup options: the customer can only contact you once, so include all necessary information, tasks, and scripts in your initial reply. Render your output in Markdown, as it will be shown in plain text to the customer.
I need help analyzing the indexes on the table [Orders].[dbo].[SalesOrder].
EXISTING INDEXES:
Index: PK__SalesOrd__B14003C2353D3F73 (IndexID: 1)
Type: CLUSTERED
Key Columns: SalesOrderID {int 4}
Include Columns: None
Is Primary Key: Yes
Is Unique: Yes
Is Disabled: No
Usage - Seeks: 0, Scans: 0, Lookups: 0, Writes: 0
Rows: 1000000
Index: IX_SalesOrder_CustomerType (IndexID: 2)
Type: NONCLUSTERED
Key Columns: CustomerType {varchar (20)}
Include Columns: CustomerCode {varchar (20)}, OrderDate {date 3}, OrderTotal {decimal 9}, Status {varchar (20)}
Is Primary Key: No
Is Unique: No
Is Disabled: No
Usage - Seeks: 5, Scans: 25, Lookups: 0, Writes: 0
Rows: 1000000
MISSING INDEX SUGGESTIONS FROM SQL SERVER:
Equality Columns: [CustomerCode] {varchar(20)}, [Status] {varchar(20)}
Inequality Columns: None
Include Columns: None
Benefit Number: 2699.65430
User Seeks: 5, User Scans: 0
Avg User Impact: 99.4%
Create TSQL: CREATE INDEX [CustomerCode_Status] ON [Orders].[dbo].[SalesOrder] ([CustomerCode], [Status]) WITH (FILLFACTOR=100, ONLINE=?, SORT_IN_TEMPDB=?, DATA_COMPRESSION=?);
Equality Columns: [CustomerCode] {varchar(20)}
Inequality Columns: None
Include Columns: None
Benefit Number: 2649.95430
User Seeks: 5, User Scans: 0
Avg User Impact: 99.4%
Create TSQL: CREATE INDEX [CustomerCode] ON [Orders].[dbo].[SalesOrder] ([CustomerCode]) WITH (FILLFACTOR=100, ONLINE=?, SORT_IN_TEMPDB=?, DATA_COMPRESSION=?);
Equality Columns: [Status] {varchar(20)}
Inequality Columns: [OrderDate] {date}
Include Columns: [CustomerCode] {varchar(20)}, [CustomerType] {varchar(20)}, [OrderTotal] {decimal(10, 2)}
Benefit Number: 1651.29760
User Seeks: 5, User Scans: 0
Avg User Impact: 60.8%
Create TSQL: CREATE INDEX [Status_OrderDate_Includes] ON [Orders].[dbo].[SalesOrder] ([Status], [OrderDate]) INCLUDE ([CustomerCode], [CustomerType], [OrderTotal]) WITH (FILLFACTOR=100, ONLINE=?, SORT_IN_TEMPDB=?, DATA_COMPRESSION=?);
Equality Columns: None
Inequality Columns: [OrderDate] {date}
Include Columns: [CustomerCode] {varchar(20)}, [CustomerType] {varchar(20)}, [OrderTotal] {decimal(10, 2)}, [Status] {varchar(20)}
Benefit Number: 1546.80200
User Seeks: 5, User Scans: 0
Avg User Impact: 58.0%
Create TSQL: CREATE INDEX [OrderDate_Includes] ON [Orders].[dbo].[SalesOrder] ([OrderDate]) INCLUDE ([CustomerCode], [CustomerType], [OrderTotal], [Status]) WITH (FILLFACTOR=100, ONLINE=?, SORT_IN_TEMPDB=?, DATA_COMPRESSION=?);
COLUMN DATA TYPES:
Column: CustomerCode, Type: varchar(20), Nullable: No, Identity: No
Column: CustomerType, Type: varchar(20), Nullable: No, Identity: No
Column: OrderDate, Type: date, Nullable: No, Identity: No
Column: OrderTotal, Type: decimal(10,2), Nullable: No, Identity: No
Column: SalesOrderID, Type: int, Nullable: No, Identity: Yes
Column: Status, Type: varchar(20), Nullable: No, Identity: No
FOREIGN KEYS:
No foreign keys on this table.
Based on the above data, please provide index recommendations for this table. Consider which indexes are redundant, which missing indexes should be created, and whether the current indexing strategy is appropriate for the workload pattern shown by the usage statistics.</ai_prompt>
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