stored-procedures

问题 CREATE OR REPLACE FUNCTION newfunction (Schema1 text, Schema2 text) RETURNS integer LANGUAGE plpgsql SECURITY DEFINER AS $function$ . . . insert into [Schema1].table (name,phone,address,......) select name,phone,address,..... from [Schema2].table where....; I want to change the schema by arg text is this possible to do this? 回答1: You'll have to use dynamic SQL throughout: EXECUTE format( E'INSERT INTO %I.tab (...)\n' 'SELECT ... FROM %I.tab WHERE ...', schema1, schema2 ); 来源： https:/

问题 I have a table that have a field as Varbinary(MAX) datatype and I want to insert image file from PictureBox into this column. So how can I convert and insert image to Varbinary in Sql Server. Thank for help me. 回答1: You should really show some code, what have you tried... This is only a guess, but it should give you a clue how to insert picture into database: //byte array that will hold image data byte[] imageData = null; using (var ms = new MemoryStream()) { //here is image property of your

问题 I have a table that have a field as Varbinary(MAX) datatype and I want to insert image file from PictureBox into this column. So how can I convert and insert image to Varbinary in Sql Server. Thank for help me. 回答1: You should really show some code, what have you tried... This is only a guess, but it should give you a clue how to insert picture into database: //byte array that will hold image data byte[] imageData = null; using (var ms = new MemoryStream()) { //here is image property of your

问题 How do I pass an array and use WHERE IN inside stored procedure? Do i need to concatenate input string or something ? Lets say DELIMITER $$ DROP PROCEDURE IF EXISTS `abc`.`table1`$$ CREATE PROCEDURE `abc`.`test` (IN somestring VARCHAR(255)) BEGIN SELECT * FROM abc.table1 WHERE flight_type IN somestring END $$ DELIMITER ; 回答1: You can use the string concatenation and the PREPARE statement to run dynamically built queries. somestring must be constructed in a valid SQL format like '1','2','3'

问题 How do I pass an array and use WHERE IN inside stored procedure? Do i need to concatenate input string or something ? Lets say DELIMITER $$ DROP PROCEDURE IF EXISTS `abc`.`table1`$$ CREATE PROCEDURE `abc`.`test` (IN somestring VARCHAR(255)) BEGIN SELECT * FROM abc.table1 WHERE flight_type IN somestring END $$ DELIMITER ; 回答1: You can use the string concatenation and the PREPARE statement to run dynamically built queries. somestring must be constructed in a valid SQL format like '1','2','3'

问题 What's the difference between accessing a variable with @ or without? 回答1: The @ makes it a user defined session variable. Otherwise it would be locally scoped variable (in a stored procedure), you would have to DEFINE your local before you can SET it. You could also set a global system variable (with SET GLOBAL or SET @@global ) if you wanted to. As well as a session system variable with SET SESSION var or SET @@session var or SET @@var . More details about SET from the documentation: If no

问题 What's the difference between accessing a variable with @ or without? 回答1: The @ makes it a user defined session variable. Otherwise it would be locally scoped variable (in a stored procedure), you would have to DEFINE your local before you can SET it. You could also set a global system variable (with SET GLOBAL or SET @@global ) if you wanted to. As well as a session system variable with SET SESSION var or SET @@session var or SET @@var . More details about SET from the documentation: If no

问题 I want to create a function in SQL Server which takes a comma separated string a parameter, splits it and returns one value at a time. The basic idea here is to call that function from a query. Something like this. CREATE FUNCTION SPLIT_VALUE(@IN_CSV) RETURN VARCHAR AS -- LOGIC TO RETURN A SINGLE VALUE FROM CSV END I want to call this function from a stored procedure. CREATE PROCEDURE DEMO_PROC @IN_CSV VARCHAR(5000), @OUT VARCHAR(5000) OUTPUT AS BEGIN SELECT @OUT= CONCAT(A.VALUE1,B.VALUE2)

问题 I want to create a function in SQL Server which takes a comma separated string a parameter, splits it and returns one value at a time. The basic idea here is to call that function from a query. Something like this. CREATE FUNCTION SPLIT_VALUE(@IN_CSV) RETURN VARCHAR AS -- LOGIC TO RETURN A SINGLE VALUE FROM CSV END I want to call this function from a stored procedure. CREATE PROCEDURE DEMO_PROC @IN_CSV VARCHAR(5000), @OUT VARCHAR(5000) OUTPUT AS BEGIN SELECT @OUT= CONCAT(A.VALUE1,B.VALUE2)

问题 Im new to ASP.net webforms.Im having a event page,in which i have a field to add sales channel heads mail id.when i click on the plus button i will be able to add more than one sales channels head. For inserting the form values into the database im using Stored procedure.and its inserting the records with one sales channel head email id. I want to know how i can write a stored procedure for inserting dynamic textbox values into sql server for the same record(That is the id and event name