Stamp values free

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Value of stamps - Find Your Stamp's Value

Enables you to process many files with date and time stamp modifications at a time. For instance, you can modify date and time stamp details for folders and files by a specified folder or select from all files. It can automatically remove empty or orphaned folders and it can change both theSource Information and Time Stamp :VRCP FDTU can edit files' or folders' source information and time stamp with predefined or custom values.User-friendly interface :VRCP FDTU provides an easy to use wizard-like interface that enables you to select data files and folders, then select the date and time stamp modification method, define values, process your selected items, as well as modify your files.A -simple- wizard- like interface :VRCP FDTU is a simple to use application that provides a wizard-like interface that enables you to select data files and folders, then select the date and time stamp modification method, define values, process your selected items, and modify your files.Custom Support for Date Stamp :You can define the new date and time stamp by changing the system's time stamp, modify the folder or file's time stamp by modifying the system's.Split or Join Files :VRCP FDTU can split or join selected files with predefined or custom values. You can also split or join directories.Custom Time Stamp :VRCP FDTU can change the time stamp of specified folder or files by default or date format and you can change the time stamp format for all folders or files.Batch Rename Files :You can rename selected files X coordinate.Syntax NVDC.setParameter("StampX",value)Data Type: StringNote: you can use as values, instead of numbers "center","left" and "right" - as the namesuggests they will position the watermark in the center of the page, on theleft or right. StampYSpecifiesthe watermark Y coordinate.Syntax NVDC.setParameter("StampY",value)Data Type: StringNote: you can use as values, instead of numbers "center","top" and "bottom" - as the namesuggests they will position the watermark in the center of the page, on top orin the bottom.StampWidthSpecifies the stamp width.Syntax NVDC.setParameter("StampWidth",value)Data Type: StringNote: will have effect onlyfor TextBox and Image stamps.StampHeightSpecifies the stamp height.Syntax NVDC.setParameter("StampHeight",value)Data Type: StringNote: will have effect onlyfor TextBox and Image stamps.StampTextBoxSpecifiesthe watermark text to use inside a text box. (See AppendixBfor the list of supported variables)Syntax NVDC.setParameter("StampTextBox",value)Data Type: StringStampTextAlignSpecifieshow the text to use inside a textbox stamp should be aligned.Possbilevalues: "1" (left), "2" (right), "3" (center)Syntax NVDC.setParameter("StampTextAlign",value)Data Type: StringStampWordWrapSpecifieswhether to enable Word Wrap in case text does not fit in one line.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampWordWrap",value)Data Type: StringStampWebLinkSpecifiesthe web address to go to when the stamp is clicked.Syntax NVDC.setParameter("StampWebLink",value)Data Type: StringStampGoToPageSpecifiesthe page number to go to when the stamp is clicked.Syntax NVDC.setParameter("StampGoToPage",value)Data Type: StringStampUseCropBoxSpecifieswhether to use the page crop box to position stamp.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampUseCropBox",value)Data Type: StringStampUsePageRotationSpecifieswhether to use the page rotation parameter when placing stamp.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampUsePageRotation",value)Data Type: StringStampPlaceAsSpecifies how to place stamp onpage. Possible values: "0" as stamp: over page content (Default),"1" as watermark: under page contentSyntax NVDC.setParameter("StampPlaceAs",value)Data Type: StringStampImageSpecifiesthe image file to use as stamp. Supported formats: GIF, PNG, JPEG, TIFF and BMP.Syntax NVDC.setParameter("StampImage",value) Example NVDC.setParameter("StampImage",

Value of Usaflag stamps - Stamps searchFind Your Stamps Value

↑Selecting specific columns to be returned is also simple using select:posts.select(:stamp)# SELECT stamp FROM postsposts.select(:stamp, :name)# SELECT stamp, name FROM postsLike order, select overrides an existing selection:posts.select(:stamp).select(:name)# SELECT name FROM postsAs you might expect, there are order_append and order_prepend equivalents for select called select_append and select_prepend:posts.select(:stamp).select_append(:name)# SELECT stamp, name FROM postsposts.select(:stamp).select_prepend(:name)# SELECT name, stamp FROM postsDeleting Records¶ ↑Deleting records from the table is done with delete:posts.where(Sequel[:stamp] Date.today - 3).delete# DELETE FROM posts WHERE (stamp Be very careful when deleting, as delete affects all rows in the dataset. Call where first and delete second:# DO THIS:posts.where(Sequel[:stamp] Date.today - 7).delete# NOT THIS:posts.delete.where(Sequel[:stamp] Date.today - 7)Inserting Records¶ ↑Inserting records into the table is done with insert:posts.insert(category: 'ruby', author: 'david')# INSERT INTO posts (category, author) VALUES ('ruby', 'david')Updating Records¶ ↑Updating records in the table is done with update:posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived')# UPDATE posts SET state = 'archived' WHERE (stamp You can provide arbitrary expressions when choosing what values to set:posts.where(Sequel[:stamp] Date.today - 7).update(backup_number: Sequel[:backup_number] + 1)# UPDATE posts SET backup_number = (backup_number + 1) WHERE (stamp As with delete, update affects all rows in the dataset, so where first, update second:# DO THIS:posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived')# NOT THIS:posts.update(state: 'archived').where(Sequel[:stamp] Date.today - 7)Merging records¶ ↑Merging records using the SQL MERGE statement is done using merge* methods. You use merge_using to specify the merge source and join conditions. You can use merge_insert, merge_delete, and/or merge_update to set the INSERT, DELETE, and UPDATE clauses for the merge. merge_insert takes the same arguments as insert, and merge_update takes the same arguments as update. merge_insert, merge_delete, and merge_update can all be called with blocks, to set the conditions for the related INSERT, DELETE, or UPDATE.Finally, after calling all of the other merge_* methods, you call merge to run the MERGE statement on the database.ds = DB[:m1] merge_using(:m2, i1: :i2). merge_insert(i1: :i2, a: Sequel[:b]+11). merge_delete{a > 30}. merge_update(i1: Sequel[:i1]+:i2+10, a: Sequel[:a]+:b+20)ds.merge# MERGE INTO m1 USING m2 ON (i1 = i2)# WHEN NOT MATCHED THEN INSERT (i1, a) VALUES (i2, (b + 11))# WHEN MATCHED AND (a > 30) THEN DELETE# WHEN MATCHED THEN UPDATE SET i1 = (i1 + i2 + 10), a = (a + b + 20)Transactions¶ ↑You can wrap a block of code in a database transaction using the Database#transaction method:DB.transaction do # BEGIN posts.insert(category: 'ruby', author: 'david') # INSERT posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived') # UPDATEend# COMMITIf the block does not raise an exception, the transaction will be committed. If the block does raise an exception, the transaction will be rolled back, and the exception will be reraised. If you want to rollback the transaction and not raise an exception outside the block, you can raise the Sequel::Rollback exception inside the block:DB.transaction do # BEGIN posts.insert(category: 'ruby', author: 'david') # INSERT if posts.where('stamp , Date.today - 7).update(state: 'archived') == 0 # UPDATE raise Sequel::Rollback endend# ROLLBACKJoining Tables¶ ↑Sequel makes it easy to join tables:order_items = DB[:items].join(:order_items, item_id: :id).where(order_id: 1234)# SELECT * FROM items# INNER JOIN order_items ON (order_items.item_id = items.id)# WHERE (order_id = 1234)The. free stamp identification and value app find stamp value free stamp scanner online stamp value scanner identify stamps by picture best stamp value app free stamp value catalogue stamp

The Value of a Stamp

For a specific record:posts.where(id: 1).get(:name)# SELECT name FROM posts WHERE id = 1 LIMIT 1Filtering Records¶ ↑The most common way to filter records is to provide a hash of values to match to where:my_posts = posts.where(category: 'ruby', author: 'david')# WHERE ((category = 'ruby') AND (author = 'david'))You can also specify ranges:my_posts = posts.where(stamp: (Date.today - 14)..(Date.today - 7))# WHERE ((stamp >= '2010-06-30') AND (stamp Or arrays of values:my_posts = posts.where(category: ['ruby', 'postgres', 'linux'])# WHERE (category IN ('ruby', 'postgres', 'linux'))By passing a block to where, you can use expressions (this is fairly “magical”):my_posts = posts.where{stamp > Date.today 1}# WHERE (stamp > '2010-06-14')my_posts = posts.where{stamp =~ Date.today}# WHERE (stamp = '2010-07-14')If you want to wrap the objects yourself, you can use expressions without the “magic”:my_posts = posts.where(Sequel[:stamp] > Date.today 1)# WHERE (stamp > '2010-06-14')my_posts = posts.where(Sequel[:stamp] =~ Date.today)# WHERE (stamp = '2010-07-14')Some databases such as PostgreSQL and MySQL also support filtering via Regexps:my_posts = posts.where(category: /ruby/i)# WHERE (category ~* 'ruby')You can also use an inverse filter via exclude:my_posts = posts.exclude(category: ['ruby', 'postgres', 'linux'])# WHERE (category NOT IN ('ruby', 'postgres', 'linux'))But note that this does a full inversion of the filter:my_posts = posts.exclude(category: ['ruby', 'postgres', 'linux'], id: 1)# WHERE ((category NOT IN ('ruby', 'postgres', 'linux')) OR (id != 1))If at any point you want to use a custom SQL fragment for part of a query, you can do so via Sequel.lit:posts.where(Sequel.lit('stamp IS NOT NULL'))# WHERE (stamp IS NOT NULL)You can safely interpolate parameters into the custom SQL fragment by providing them as additional arguments:author_name = 'JKR'posts.where(Sequel.lit('(stamp , Date.today - 3, author_name))# WHERE ((stamp Datasets can also be used as subqueries:DB[:items].where(Sequel[:price] > DB[:items].select{avg(price) + 100})# WHERE (price > (SELECT avg(price) + 100 FROM items))After filtering, you can retrieve the matching records by using any of the retrieval methods:my_posts.each{|row| p row}See the Dataset Filtering file for more details.Security¶ ↑Designing apps with security in mind is a best practice. Please read the Security Guide for details on security issues that you should be aware of when using Sequel.Summarizing Records¶ ↑Counting records is easy using count:posts.where(Sequel.like(:category, '%ruby%')).count# SELECT COUNT(*) FROM posts WHERE (category LIKE '%ruby%' ESCAPE '')And you can also query maximum/minimum values via max and min:max = DB[:history].max(:value)# SELECT max(value) FROM historymin = DB[:history].min(:value)# SELECT min(value) FROM historyOr calculate a sum or average via sum and avg:sum = DB[:items].sum(:price)# SELECT sum(price) FROM itemsavg = DB[:items].avg(:price)# SELECT avg(price) FROM itemsOrdering Records¶ ↑Ordering datasets is simple using order:posts.order(:stamp)# ORDER BY stampposts.order(:stamp, :name)# ORDER BY stamp, nameorder always overrides the existing order:posts.order(:stamp).order(:name)# ORDER BY nameIf you would like to add to the existing order, use order_append or order_prepend:posts.order(:stamp).order_append(:name)# ORDER BY stamp, nameposts.order(:stamp).order_prepend(:name)# ORDER BY name, stampYou can also specify descending order:posts.reverse_order(:stamp)# ORDER BY stamp DESCposts.order(Sequel.desc(:stamp))# ORDER BY stamp DESCCore Extensions¶ ↑Note the use of Sequel.desc(:stamp) in the above example. Much of Sequel’s DSL uses this style, calling methods on the Sequel module that return SQL expression objects. Sequel also ships with a core_extensions extension that integrates Sequel’s DSL better into the Ruby language, allowing you to write::stamp.descinstead of:Sequel.desc(:stamp)Selecting Columns¶ Stamp collectors have been using software to help manage their collections for many years. Some programs are designed to catalog your stamps and track their values. Others can help you find missing stamps in your collection, or even find new stamps to add to it. What is stamp collecting software? Stamp collecting software is a type of program that helps you to organize and manage your stamp collection. It usually includes features such as a database of stamps, a way to track your collection, and tools for finding new stamps to add to your collection. Some stamp collecting software also includes features for helping you to sell your stamps. The different types of stamp collecting software There are a few different types of stamp collecting software available. Some are more comprehensive than others, but all can be useful for cataloguing your collection. Here is a brief overview of some of the different types of software available: 1. Stamp Catalogue Software: This type of software allows you to catalogue your stamp collection according to different criteria. You can usually search by country, year, or theme. This can be a useful way to keep track of your collection and find specific stamps when you need them. 2. Collection Management Software: This type of software is designed to help you manage your entire stamp collection. It can include features such as inventory management, value tracking, and wish list management. This can be a helpful tool if you have a large and valuable stamp collection. 3. Auction Management Software: This type of software is designed to help you manage your stamp collection for auction purposes. It can include features such as reserve tracking, bidding history, and lot management and can be a helpful tool if you plan on selling some or all of your stamp collection. 4. Comprehensive Collecting Software: This type of software includes all of the features of the other types of software, plus additional features. Understanding the pros and cons of stamp collecting software There are a variety of software programs available to help you catalog and manage your stamp collection. Let’s take a look at the pros and cons of using stamp collecting software. PROS: 1. You can easily catalog your entire collection. 2. Software can help you keep track of the value of your stamps. 3. Programs often come with features like wish lists and alerts for new additions

Value of 2025 olympic stamps stamps - Find Your Stamp's Value

U.S. #681861 WashingtonReplaced previous 10c stamp after it was demonetizedPaid first class postal rate for transcontinental lettersStamp Category: DefinitiveSeries: 1861-62 IssueValue: 10c Earliest Documented Use: August 20, 1861Printed by: National Bank Note Co. Quantity printed: 27,300,000 estimated Format: Printed in sheets of 200 stamps, divided into vertical panes of 100 eachPrinting Method: EngravingPerforations: 12Color: Yellow greenWhy the stamp was issued: The stamp was issued to take the place of the 10c stamp of the 1857-61 series, which had been demonetized by the US Post Office Department. The 10¢ Washington stamp paid first-class postage on letters up to one-half ounce going cross country. Demand for the stamp fell sharply after July 1st, 1863, when the domestic rate was changed to 3c without regard to distance. About the printing: The design was engraved on a die – a small, flat piece of steel. The design was copied to a transfer roll – a blank roll of steel. Several impressions or “reliefs” were made on the roll. The reliefs were transferred to the plate – a large, flat piece of steel from which the stamps were printed. About the design: The image of Washington is based on a portrait by renowned artist Gilbert Stuart. Stuart painted at least 100 portraits of Washington. About the 1861-62 Series: The series consists of US #63-72. The same face values and subjects found in the 1857-61 series were used in their creation, and their colors are similar as well. The frame designs vary greatly from the preceding series. While the denominations on the 1857-61 issues were written out, the denominations on the new series were now also shown in numerals displayed in the upper corners of the stamps. This helped distinguish them from the previous series. History the stamp represents: The 10c value is the fourth stamp

Value of nippon japan stamps - Stamps searchFind Your Stamps Value

- 804 free brushes matching stamp shapes 1 2 3 16 17 of 17 Christmas Stamp Brush Pack Cupcake Stamp Brush Pack Vintage Stamp Brushes Pack Sailor Summer Stamp Brush Pack Vintage Floral Stamp Brush Pack Christmas Tree Stamp Brushes Christmas Stamp Brush Collection Stamp Christmas Stamp Brushes Christmas Stamp Brushes Stamp Brushes Fire Shapes Brush Collection Circle Shapes Brush Collection Decorative Circle Shape Brushes Badge Shapes Brush Collection Decorative Circle Shape Brushes Guilloche Shape Brushes Decorative Circle Shape Brushes Sun Shape Brush Collection Free Watercolor Shape Photoshop Brushes Free Ink Shape Photoshop Brushes Free Ink Shapes Photoshop Brushes Decorative Abstract Flower Shape Brushes Vintage Vector Skull Shapes Collection Old Postage Stamp Brushes Photoshop Stamp Brushes News Agencies Stamp Arsenal logo+Stamp England Crest+Stamp Premier League logo+Stamp Manchester United Logo+Stamp Chelsea Logo+Stamp Old Administration Stamps Brokeh Brush Stamps Confidential Stamp Photoshop Brushes Christmas Stamp Brushes Shape brush Butterfly Shapes Frames shapes Shabby Shapes Halloween shapes Shapes 2 Shapes 4 Pirates Shapes Shapes 1 Horses Shapes! Birds Shapes Astrological shapes Dice Shapes Label Shapes Next page 1 2 3 16 17 of 17. free stamp identification and value app find stamp value free stamp scanner online stamp value scanner identify stamps by picture best stamp value app free stamp value catalogue stamp

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We all know stamps can be valuable. Over the years, there have been multiple cases of a stamp selling for over a million dollars at an auction.Realistically, none of us can expect to have a stamp of that caliber on our hands. However, it’s entirely possible that you are in possession of a rare stamp, which is why it’s so important to know how to find a stamp’s value.My hope is that the information and resources in this guide will help you to evaluate any stamp you come across.Note: since there are so many variables that come into play when it comes to finding your stamps’ values, many statements expressed throughout this article are generalizations and have exceptions.Setting Realistic ExpectationsThe vast majority of stamps are worth pennies. Rare stamps are few and far between – very few collections contain any.Most modern stamps from the United States, (spanning back to the 1930s or so), were issued in quantities that far exceeded collector demand. There are an estimated 20 million stamp collectors worldwide, but most stamps were issued in quantities of 100 million or more.In general, unused stamps issued in roughly the past 80 years are worth face value or less and can be used for postage without worry. For the most part, used stamps of the same age have virtually no monetary value, but they are still fun to collect.As for stamps issued prior to the ‘30s, there is a greater chance of them having some value, but still, most were issued in large quantities and carry little value.How to Identify a StampThere are multiple resources available for identifying stamps, but physical reference books are the most widely used.In the United States, Scott Postage Stamp Catalogs are the most popular reference books used by collectors.Before using a Scott catalog, I would recommend reading through the introduction to familiarize yourself with how the catalog works. There is definitely a learning curve when it comes to finding your stamp in the catalog, but this can only be helped through lots of practice.If you do not have a catalog or you cannot find your stamp listed, you can ask for assistance on a stamp forum (here are some good ones). Make sure to include a very clear image of your stamp when asking for help with identification.Once you identify your stamp and note its catalog number, it’s time to determine its real market value.How to Find Your Stamp’s ValueThe value of a stamp is based off of a number of factors. These include condition, centering, whether it’s used or unused, and market demand.A used stamp from the United StatesUsed or unused – A stamp is used if it has any cancellation marks, no matter how light. It is considered unused if no cancellation marks are present. There are four different types of unused stamps:No gum – if the reverse side of the stamp has no adhesive gum, it is considered “mint, no gum”.Regummed – if someone applied new gum to the reverse of a

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Enables you to process many files with date and time stamp modifications at a time. For instance, you can modify date and time stamp details for folders and files by a specified folder or select from all files. It can automatically remove empty or orphaned folders and it can change both theSource Information and Time Stamp :VRCP FDTU can edit files' or folders' source information and time stamp with predefined or custom values.User-friendly interface :VRCP FDTU provides an easy to use wizard-like interface that enables you to select data files and folders, then select the date and time stamp modification method, define values, process your selected items, as well as modify your files.A -simple- wizard- like interface :VRCP FDTU is a simple to use application that provides a wizard-like interface that enables you to select data files and folders, then select the date and time stamp modification method, define values, process your selected items, and modify your files.Custom Support for Date Stamp :You can define the new date and time stamp by changing the system's time stamp, modify the folder or file's time stamp by modifying the system's.Split or Join Files :VRCP FDTU can split or join selected files with predefined or custom values. You can also split or join directories.Custom Time Stamp :VRCP FDTU can change the time stamp of specified folder or files by default or date format and you can change the time stamp format for all folders or files.Batch Rename Files :You can rename selected files

2025-03-28
User4650

X coordinate.Syntax NVDC.setParameter("StampX",value)Data Type: StringNote: you can use as values, instead of numbers "center","left" and "right" - as the namesuggests they will position the watermark in the center of the page, on theleft or right. StampYSpecifiesthe watermark Y coordinate.Syntax NVDC.setParameter("StampY",value)Data Type: StringNote: you can use as values, instead of numbers "center","top" and "bottom" - as the namesuggests they will position the watermark in the center of the page, on top orin the bottom.StampWidthSpecifies the stamp width.Syntax NVDC.setParameter("StampWidth",value)Data Type: StringNote: will have effect onlyfor TextBox and Image stamps.StampHeightSpecifies the stamp height.Syntax NVDC.setParameter("StampHeight",value)Data Type: StringNote: will have effect onlyfor TextBox and Image stamps.StampTextBoxSpecifiesthe watermark text to use inside a text box. (See AppendixBfor the list of supported variables)Syntax NVDC.setParameter("StampTextBox",value)Data Type: StringStampTextAlignSpecifieshow the text to use inside a textbox stamp should be aligned.Possbilevalues: "1" (left), "2" (right), "3" (center)Syntax NVDC.setParameter("StampTextAlign",value)Data Type: StringStampWordWrapSpecifieswhether to enable Word Wrap in case text does not fit in one line.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampWordWrap",value)Data Type: StringStampWebLinkSpecifiesthe web address to go to when the stamp is clicked.Syntax NVDC.setParameter("StampWebLink",value)Data Type: StringStampGoToPageSpecifiesthe page number to go to when the stamp is clicked.Syntax NVDC.setParameter("StampGoToPage",value)Data Type: StringStampUseCropBoxSpecifieswhether to use the page crop box to position stamp.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampUseCropBox",value)Data Type: StringStampUsePageRotationSpecifieswhether to use the page rotation parameter when placing stamp.Possbilevalues: "true", "false"Syntax NVDC.setParameter("StampUsePageRotation",value)Data Type: StringStampPlaceAsSpecifies how to place stamp onpage. Possible values: "0" as stamp: over page content (Default),"1" as watermark: under page contentSyntax NVDC.setParameter("StampPlaceAs",value)Data Type: StringStampImageSpecifiesthe image file to use as stamp. Supported formats: GIF, PNG, JPEG, TIFF and BMP.Syntax NVDC.setParameter("StampImage",value) Example NVDC.setParameter("StampImage",

2025-03-28
User7174

↑Selecting specific columns to be returned is also simple using select:posts.select(:stamp)# SELECT stamp FROM postsposts.select(:stamp, :name)# SELECT stamp, name FROM postsLike order, select overrides an existing selection:posts.select(:stamp).select(:name)# SELECT name FROM postsAs you might expect, there are order_append and order_prepend equivalents for select called select_append and select_prepend:posts.select(:stamp).select_append(:name)# SELECT stamp, name FROM postsposts.select(:stamp).select_prepend(:name)# SELECT name, stamp FROM postsDeleting Records¶ ↑Deleting records from the table is done with delete:posts.where(Sequel[:stamp] Date.today - 3).delete# DELETE FROM posts WHERE (stamp Be very careful when deleting, as delete affects all rows in the dataset. Call where first and delete second:# DO THIS:posts.where(Sequel[:stamp] Date.today - 7).delete# NOT THIS:posts.delete.where(Sequel[:stamp] Date.today - 7)Inserting Records¶ ↑Inserting records into the table is done with insert:posts.insert(category: 'ruby', author: 'david')# INSERT INTO posts (category, author) VALUES ('ruby', 'david')Updating Records¶ ↑Updating records in the table is done with update:posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived')# UPDATE posts SET state = 'archived' WHERE (stamp You can provide arbitrary expressions when choosing what values to set:posts.where(Sequel[:stamp] Date.today - 7).update(backup_number: Sequel[:backup_number] + 1)# UPDATE posts SET backup_number = (backup_number + 1) WHERE (stamp As with delete, update affects all rows in the dataset, so where first, update second:# DO THIS:posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived')# NOT THIS:posts.update(state: 'archived').where(Sequel[:stamp] Date.today - 7)Merging records¶ ↑Merging records using the SQL MERGE statement is done using merge* methods. You use merge_using to specify the merge source and join conditions. You can use merge_insert, merge_delete, and/or merge_update to set the INSERT, DELETE, and UPDATE clauses for the merge. merge_insert takes the same arguments as insert, and merge_update takes the same arguments as update. merge_insert, merge_delete, and merge_update can all be called with blocks, to set the conditions for the related INSERT, DELETE, or UPDATE.Finally, after calling all of the other merge_* methods, you call merge to run the MERGE statement on the database.ds = DB[:m1] merge_using(:m2, i1: :i2). merge_insert(i1: :i2, a: Sequel[:b]+11). merge_delete{a > 30}. merge_update(i1: Sequel[:i1]+:i2+10, a: Sequel[:a]+:b+20)ds.merge# MERGE INTO m1 USING m2 ON (i1 = i2)# WHEN NOT MATCHED THEN INSERT (i1, a) VALUES (i2, (b + 11))# WHEN MATCHED AND (a > 30) THEN DELETE# WHEN MATCHED THEN UPDATE SET i1 = (i1 + i2 + 10), a = (a + b + 20)Transactions¶ ↑You can wrap a block of code in a database transaction using the Database#transaction method:DB.transaction do # BEGIN posts.insert(category: 'ruby', author: 'david') # INSERT posts.where(Sequel[:stamp] Date.today - 7).update(state: 'archived') # UPDATEend# COMMITIf the block does not raise an exception, the transaction will be committed. If the block does raise an exception, the transaction will be rolled back, and the exception will be reraised. If you want to rollback the transaction and not raise an exception outside the block, you can raise the Sequel::Rollback exception inside the block:DB.transaction do # BEGIN posts.insert(category: 'ruby', author: 'david') # INSERT if posts.where('stamp , Date.today - 7).update(state: 'archived') == 0 # UPDATE raise Sequel::Rollback endend# ROLLBACKJoining Tables¶ ↑Sequel makes it easy to join tables:order_items = DB[:items].join(:order_items, item_id: :id).where(order_id: 1234)# SELECT * FROM items# INNER JOIN order_items ON (order_items.item_id = items.id)# WHERE (order_id = 1234)The

2025-04-17

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