Postgresql String Contains


PostgreSQL treats untyped literals as being of unknown type and deduces the type from context (even in contexts where the spec does not provide for contextual typing). PostgreSQL Functions by Example - Free download as PDF File (. Using PostgreSQL through SQLAlchemy writestuff postgresql Python Free 30 Day Trial In this Write Stuff article, Gareth Dwyer writes about using SQLAlchemy, a Python SQL toolkit and ORM, discussing the advantages of using it while performing database operations. regexp_split_to_array(subject, pattern[, flags]) returns the split string as an array of text. The source must be a value expression of type timestamp, time, or interval. Sequences. SQL defines some string functions that use key words, rather than commas, to separate arguments. Informally, the Levenshtein distance between two words is the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other. See the following picture: In the second statement, we extract a substring started at position 8 and we omit the length parameter. SQL SERVER uses the non-ANSI SQL + operator for string concatenation while PostgreSQL uses the ANSI SQL || SQL Server won't allow text + varchar concatenation and if your varchar is unlimited, you must call it varchar(MAX). virendersharma Tuesday, September 27, 2011. This section describes functions and operators for examining and manipulating values of type bytea. You can take advantage of the very cool string_agg function and combine that with the even cooler ORDER BY of aggregate functions if you want your list alphabetized. The pattern should be a POSIX-style regular expression; for more information about forming a POSIX-style regular expression, please refer to the core documentation at:. POSTGRES also supports user defined functions which include statements, queries, and direct calls into POSTGRES internal interfaces. I obviously cannot use the ISNUMERIC function, since it will return a false if ANY character in the string iosnon-numeric,and a tru only if ALL the characters are numeric. Re: [Oracle to PostgreSQL]connction string lacks some options Kgronau-Oracle May 21, 2014 11:05 AM ( in response to 2671659 ) That parameter HS_FDS_SQLLEN_INTERPRETATION has no impact in your 32bit env - it is only available for a 64bit DG4ODBC when the ODBC driver manager/ODBC driver not 64bit compatible. Postgres and Redshift follow the POSIX standard for regular expressions, so for this post we will focus on that. The PostgreSQL LIKE condition allows wildcards to be used in the WHERE clause of a SELECT, INSERT, UPDATE, or DELETE statement. if I have the string foo. I am looking at the 9. The power of these functions is unlimited. PostgreSQL also provides versions of these functions that use the regular function invocation syntax (see Table 9. Navicat for PostgreSQL is an easy-to-use graphical tool for PostgreSQL database development. Postgresqltutorial. STRING_AGG is an aggregate function that takes all expressions from rows and concatenates them into a single string. x PostgreSQL TEXT Data Type - Features, Examples and Equivalents - SQLines Open Source Tools. Escape merely outputs null bytes as \000 and doubles backslashes. Using PostgreSQL in C#. The concatenation of NULL and string obtain string as a result. The classes RWDBColumn and RWDBValue have an associated RWDBValue::ValueType that specifies the datatype of the database column or field being referenced. Go to the Cloud SQL Instances page. This section describes functions and operators for examining and manipulating values of type bytea. Many string functions are used in combination with other string functions to achieve a desired solution to a problem. You’ve got three options if you actually want to do something with it: Wait for PostgreSQL 9. Continuing our series of PostgreSQL Data Types today we're going to introduce some of the PostgreSQL text processing functions. EXTRACT (field from timestamp), EXTRACT (field from interval) The EXTRACT(field FROM source) function retrieves subfields such as year or hour from date/time values. Some functions also exist natively for the bit-string types. SQL LENGTH examples. For example, you want to run a specific line of code only if an input string contains another substring in it. When Java 8 came out, it proved a great effort to cope with the great demand of stream processing. Go to the Cloud SQL Instances page in the Google Cloud Platform Console. See also my DBMS links. Date and time. String to Date and Timestamp. 3 service and for each database that has PostGIS installed, drop the functions that won't migrate. Note: Before PostgreSQL 8. 1, "Configuring the Server". All you want to do is fetch some JSON from an API endpoint for the weather, some book reviews, or something similarly simple. SQL defines some string functions that use key words, rather than commas, to separate arguments. The SQL LOWER function converts all the characters in a string into lowercase. It is true - these function doesn't handle NULL well :(. Before analyzing a large dataset that contains textual information, it. In PostgreSQL you will obtain null in this case. At this point PostgreSQL is not able (yet?) to make those adjustments for you so some manual improvements will definitely help. This tutorial provides you the most commonly used PostgreSQL string functions that help you manipulate string data effectively. Introduction. This mixin provides functionality for the Range Operators listed in Table 9-44 of the postgres documentation for Range Functions and Operators. Reference #3698 for PostGIS 2. Before you start using C/C++ PostgreSQL interface, find the pg_hba. PostgreSQL functions From a syntax perspective, PostgreSQL supports only the FUNCTION keyword. 3以前において、これらの関数はいくつかの非文字列データ型の値を警告なしに受け付けたのは、それら. PostgreSQL offers a variety of date functions for manipulating timestamps. But for some simple queries it's possible to emulate GROUP_CONCAT with pure SQL , avoiding custom functions at all. PostgreSQL supports a wide variety of text formatting, analysis and comparison functions. The SQL LOWER function converts all the characters in a string into lowercase. (1 reply) Hello, I have a dilema and I was hoping someone here may offer guidance or assistance. The functions vary in how they determine the position of the substring to return. With a PostgreSQL database as a source, you can migrate data to either another PostgreSQL database or one of the other supported databases. I am looking at the 9. The Art of PostgreSQL is the new edition of my previous release, Mastering PostgreSQL in Application Development. It provides a large number of functions and operators for the built-in data types, thereby relieving the developers from simpler tasks and focusing on the solution to the bigger problem. Generic functions are invoked like all SQL functions, using the func attribute: select ([ func. 4, PostgreSQL 9. Binary strings allow storing odds of value zero ; Non- printable octets ; Character strings not allow zero octets and also disallows any other octet values and sequences which are invalid as per the database's character set encoding rules. If a second call is made to pg_connect() with the same connection_string as an existing connection, the existing connection will be returned unless you pass PGSQL_CONNECT_FORCE_NEW as connect_type. I’m using a module with shared components that I use through the whole app, let’s call it SharedModule. One of our developers is generating random token string manually for two columns, and now he is required to find similarity between this string. The PostgreSQL initcap function converts the first letter of each word to uppercase and all other letters are converted to lowercase. For even more powerful string handling and manipulating functions take a look at the Perl compatible regular expression functions. Details are in Table 9-6. Most regular expression functions support an optional parameters argument as the very last input. The parameters argument is a VARCHAR string that specifies the matching behavior of the regular expression function. 1 seconds in a number string; int array to string; FYI - Sql for splitting a delimited concatenated string into separate strings/rows. The TO_DATE function in PostgreSQL is used to converting strings into dates. I am looking at the 9. PostgreSQL SUBSTRING() function with Example : The PostgreSQL substring function is used to extract a string containing a specific number of characters from a particular position of a given string. S The table pg_roles is a system table containing database roles FunctionReturnResultSet. So if the string is: it is a sunny day How can I issue a command in postgres to remove this row from the table completely. ) that stored on the database server and can be invoked using the SQL interface. 文字列関数と演算子 (PostgreSQL 文書) パターンマッチ (PostgreSQL 文書) String Functions and Operators Compatibility - 各種DBMS間での比較; java. Few data will come down from UI layer as integers. This blog today is going to talk about strings: how they are stored, how they are input, and lots of examples of how to use string operators and functions in order to manipulate them. Valid option, but more DIY (you’ll have to define your own functions). To get involved, see the Developer FAQ. Easily organize, use, and enrich data — in real time, anywhere. The following shows the output: Even though CAST() is a standard-SQL function, not so many database systems support it. Strings, strings, strings. 3, PostgreSQL 9. Like other aggregate functions such as AVG(), COUNT(), MAX(), MIN(), and SUM(), the STRING_AGG() function is often used with the GROUP BY clause. Character String Functions. Oracle functions and Oracle packages. 2, PostgreSQL 9. A PREPARE statement generates a SQL string that can be reused, we are having to use them here as results_eq(). 2012-05-04 08:29 strk *. All values from PostgreSQL are strings, since PostgreSQL integer, float may be much larger than PHP's native int, double can handle. conf file in your PostgreSQL installation directory and add the following line − # IPv4 local connections: host all all 127. Mathematical operators 5-5. 1 until upgrade rails. Postgres is a widely-used nickname for PostgreSQL. Few data will come down from UI layer as integers. It also serves as a collaboration area for PostgreSQL contributors. dll, like shown in the picture: Baking a connection string PostgreSQL-style. If you want to convert all characters in a string into uppercase, you should use the UPPER function. Class name of hostname verifier. The easiest way to check if a Python string contains a substring is to use the in operator. String-valued functions return NULL if the length of the result would be greater than the value of the max_allowed_packet system variable. This blog today is going to talk about strings: how they are stored, how they are input, and lots of examples of how to use string operators and functions in order to manipulate them. The available functions in the query editor depend on the PostgreSQL version you selected when configuring the data source. sslhostnameverifier = String. The code contains the key information about how the string should sound if read aloud. QUOTE_IDENT(string text), QUOTE_LITERAL(string text), QUOTE_LITERAL(value anyelement), QUOTE_NULLABLE(value anyelement) All these functions return the given string suitably quoted to be used as an identifier in an SQL statement string. So ideally, it should only return "1", which is the ID for tag name 'aaa' This is what I am doing so far:. Writing PostgreSQL Functions in C. When working with a bit string, these functions number the first (leftmost) bit of the string as bit 0. Date and time. SQL defines some string functions with a special syntax where certain key words rather than commas are used to separate the arguments. NET program calling Postgres functions at regular intervals before it will receive a notification request. 2 and earlier, \uFFFF works when you add your regex as a literal (Unicode) string to your Python code. However, a PostgreSQL function can take an OUT parameter as well, meaning that the PostgreSQL function can behave just like some other RDBMS stored procedure. PostgreSQL also provides versions of these functions that use the regular function invocation syntax (see Table 9-7). The value 1 refers to the first character (or byte), 2 refers to the second, and so on. If the regex finds no matches, both functions return the subject string. txt) or read online for free. PostgreSQL encode() Encode binary data to different representation. The following shows the output: Even though CAST() is a standard-SQL function, not so many database systems support it. Getting started with postgresql Remarks. SQL contains string - In this blog, I wil explain how to check a specific word or character in a given statement in SQL Server, using CHARINDEX function or SQL Server and check if the string contains a specific substring with CHARINDEX function. The SQL LOWER function converts all the characters in a string into lowercase. This technique is called pattern matching. So until now everything worked perfectly but I added a component in Sha. I need to find out all the stored functions that have any relationship to the table X - as I want to change the table structure. PostgreSQL GROUP BY and Aggregate Functions - Explained January 11, 2016 January 27, 2016 Vipin Raj 0 Comment PostgreSQL Tutorial In this post we will discuss about the usage of GROUP BY clause and Aggregate Functions in PostgreSQL. Generally, people are using MD5 and SHA algorithm for password encryption, but both are easy to break and vulnerable, so we should not use this in our general practice. You can also call some functions via cPanel's Webmail ports (2095 or 2096). For more information, see Section 12. SQL String Functions. Just make an empty Windows Forms application, and add a reference to Npgsql. Connection strings for PostgreSQL. Last week on my Facebook Page, I have received a couple message about what is a similar solution of SQL Server STUFF in PostgreSQL. The database functions in the django. We have trained over 90,000 students from over 16,000 organizations on technologies such as Microsoft ASP. Compatible with PostgreSQL 8. We’ve seen that Postgres now contains some very powerful JSON constructs. PHP will return values of PostgreSQL boolean datatype as single character strings "t" and "f", not PHP true and false. Go to the Cloud SQL Instances page. Summary: in this tutorial, you will learn how to use the SQL LOWER function to convert all characters of a string into lowercase. virendersharma Tuesday, September 27, 2011. yaml file, in the conf. How to Concatenate Strings in SQL. Different databases use subtle variations on these functions, so be sure to look up the appropriate database's syntax if you're connected to a private database. string_pattern can be of a character or binary data type. Search Search. # run contents of "my_file" as a program perl my_file # run debugger "stand-alone". The pgcrypto module provides cryptographic functions for PostgreSQL, including the ability to create UUIDs. ) that stored on the database server and can be invoked using the SQL interface. More Postgres (const std::string &db) Opens a new PostgreSQL backend connection. The SQL LOWER function converts all the characters in a string into lowercase. Operator precedence 5-9. Database Size (MB) This counter returns the size of the specified database in MB. The PostgreSQL substring function is used to extract a string containing a specific number of characters from a particular position of a given string. In the first statement, we extract a substring that has length of 8 and it is started at the first character of the PostgreSQL string. The SQL LOWER function converts all the characters in a string into lowercase. But there are a few cases where this behave causes problems - mainly for older applications, where char(n) type was used (there is a clean advice - don't use this type). Well, you will use the "+" operator. SQL LENGTH examples. Informally, the Levenshtein distance between two words is the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other. Reference #3698 for PostGIS 2. This part describes the use of the SQL language in PostgreSQL. Any SQL functionality that is native to your dialect can be leveraged in the sql: parameters within LookML, or as derived tables. Hi, I'm in the process of converting an Oracle database into postgresql. This article has an unclear citation style. この節では文字列の値の調査や操作のための関数と演算子について説明します。 ここでの文字列とはcharacterデータ型、character varyingデータ型、およびtextデータ型すべての値を含みます。. More ~Postgres Destructor. The ability for programs to call directly into POSTGRES internals is known as the fast path. Postgres String Functions: Conversion. Currently, outbound connections from Azure Database for PostgreSQL are not supported, except for connections to other Azure Database for PostgreSQL servers. I am looking at the 9. Strings in this context mean values of the type BYTEA. This list won't change. [email protected] With 8 bits converted to three characters and each character stored as 1-4 bytes you might use up to 12 bytes (or even more in some cases) for each byte of information. Any needs on this? Is this a real bug or am I doing something wrong? Thanks, DC. 4 Example Let's look at some concatenation examples and explore how to use the || operator in PostgreSQL. Each time we recurse, we keep the product_name and top_purchasing_users intact. tsvector represents a document optimized for text search by. Syntax: substring(string [from ] [for ]). It's a slightly tweaked version of a function that's been reposted many times on the mailing list, from 2005. SQL CONCATENATE (appending strings to one another) SQL allows us to concatenate strings but the syntax varies according to which database system you are using. Different databases use subtle variations on these functions, so be sure to look up the appropriate database's syntax if you're connected to a private database. The good news is that the proprietary functions have the same default semantic as listagg: they filter null values before aggregation but don't remove duplicates (all semantics). 0 Change site of census Reference #3816 for PostGIS 2. Almost all string functions have parameters of text type. Connect to PostgreSQL from Java; Data Types; Dates, Timestamps, and Intervals; Event Triggers; Export PostgreSQL database table header and data to CSV file; EXTENSION dblink and postgres_fdw; Find String Length / Character Length; Inheritance; INSERT; JSON Support; Postgres cryptographic functions; digest; Postgres Tip and Tricks; PostgreSQL. So ideally, it should only return "1", which is the ID for tag name 'aaa' This is what I am doing so far:. Regular expression comparison operators 5-3. SIMILAR TO or regular expressions with basic left-anchored expressions can use this index, too. Just make an empty Windows Forms application, and add a reference to Npgsql. As of PostgreSQL 9 Does anyone know how this works in case you need to select an integer instead of a string. One such category of built-in functions is the PostgreSQL string functions. However, a PostgreSQL function can take an OUT parameter as well, meaning that the PostgreSQL function can behave just like some other RDBMS stored procedure. POSTGRES also supports user defined functions which include statements, queries, and direct calls into POSTGRES internal interfaces. SQL defines some string functions that use key words, rather than commas, to separate arguments. Psycopg is the most popular PostgreSQL adapter for the Python programming language. PostgreSQL unlike Microsoft SQL Server, supports function name and argument overloading. S The table pg_roles is a system table containing database roles FunctionReturnResultSet. The first step is to log into your PostgreSQL 9. 2016-09-26 03:26 Regina Obe * [r15143]. 863 * string, as per SQL practice. String functions This page includes comparison tables which can be big and complex. Drops all the functions and procedures (qualified as routines) from a schema. PostgreSQL Substring - Extracting a substring from a String. You can localize the string to your language of choice (day and month names) by using the TM (translation mode) modifier. These > functions are equivalent of array_to_string and string_to_array > function with maybe more correct NULL handling. Text content is released under Creative Commons BY-SA. Valid option, but more DIY (you’ll have to define your own functions). (5 replies) Hi All, In my table, some of the columns are in text datatype. CREATE FUNCTION: return types. If your table contains the values 'abc', 'def' and you query for WHERE mycolumn=0, both rows will match. If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. How do we use the ASCII and CHR functions in our SQL? Similar functions We’ll also look at some functions that may complement ASCII() and CHR(). Introduction. Few data will come down from UI layer as integers. 1 until upgrade rails. 0 specifications. In phpmyadmin, I can easily search. What we are not going to cover is regular expressions, although we will use them. The tilde can be combined with other operators such as (*) and (!) in order to form different matching conditions. Build PostgreSQL C Functions on Windows - Free download as PDF File (. Some functions also exist natively for the bit-string types. 0, PostgreSQL 8. If your table contains the values 'abc', 'def' and you query for WHERE mycolumn=0, both rows will match. You can use the tilde operator ~ to filter columns using a regular expression. This course will provide you an understanding of how to use built-in PostgreSQL functions in your SQL queries to manipulate different types of data including strings, character, numeric and date/time. If you're using an ArrayField of CIText fields, you must add 'django. Webucator provides instructor-led training to students throughout the US and Canada. SQL defines some string functions with a special syntax where certain key words rather than commas are used to separate the arguments. How to make a select with array contains value clause in psql. This list won't change. Now connect the ‘Date Column Name’ control parameter to the lightning strike of ‘Formula’ tool and perform the actions as seen below – 6. See also my DBMS links. 2, PostgreSQL 9. This PostgreSQL tutorial explains how to use literals (string, number, date, time, and boolean literals) in PostgreSQL with examples. uuid If you are planning to use uuid_generate_v4() from the uuid-ossp extension, consider comparing with gen_random_uuid() from the pgcrypto extension for performance benefits. But a bug in some C library functions on Linux forced the project to disable the feature for non-C collations in Postgres 9. Didn't find your connection string? Start over from the connection string reference index - or try a search! In the Q&A forums you can ask your own question and let somebody help you. This tutorial provides you the most commonly used PostgreSQL string functions that help you manipulate string data effectively. can sometimes be a tedious task. I found it was postgreSQL-42-2. A link to the official documentation can be found at the bottom of the page. You can concatenate NULL result with a string and obtain this string as result. SQL defines some string functions that use key words, rather than commas, to separate arguments. The pgcrypto module provides cryptographic functions for PostgreSQL, including the ability to create UUIDs. LibPQFactory. For types without common mathematical conventions for all possible permutations (e. 3 service and for each database that has PostGIS installed, drop the functions that won't migrate. PostgreSQL contains a comprehensive set of character string operators, from simple text concatenation and string comparison, to a strong set of regular expression matching. It perform an operation on a string input value and return a string or numeric value. String (Java SE 6) org. The easiest way to check if a Python string contains a substring is to use the in operator. This extension contains functions that are native to commercial databases, and can be helpful if you are porting a commercial database to PostgreSQL. This technique is called pattern matching. The implicit conversion to strings follows the existing rules for data type conversions. Cross-region read replicas in Azure Database for PostgreSQL are now available. The ability for programs to call directly into POSTGRES internals is known as the fast path. The available functions in the query editor depend on the PostgreSQL version you selected when configuring the data source. Re: [Oracle to PostgreSQL]connction string lacks some options Kgronau-Oracle May 21, 2014 11:05 AM ( in response to 2671659 ) That parameter HS_FDS_SQLLEN_INTERPRETATION has no impact in your 32bit env - it is only available for a 64bit DG4ODBC when the ODBC driver manager/ODBC driver not 64bit compatible. Convert number to string. Notice that the WHERE clause contains a special expression: the first_name, the LIKE operator and a string that contains a percent (%) character, which is referred as a pattern. In PostgreSQL 9. STRING values must be well-formed UTF-8. Most of the Database Developers require to perform String Aggregation based on different group of records. Many times we need to find any object name, column name or comment text in PostgreSQL Functions. Brief description on how to PostgresSQL C Functions on Windows using Visual Studio 2010. PostgreSQL GROUP BY and Aggregate Functions – Explained January 11, 2016 January 27, 2016 Vipin Raj 0 Comment PostgreSQL Tutorial In this post we will discuss about the usage of GROUP BY clause and Aggregate Functions in PostgreSQL. Home / SQL String Functions / Using SQL CONCAT Function to Concatenate Two or More Strings Using SQL CONCAT Function to Concatenate Two or More Strings Summary : in this tutorial, you will learn how to use the SQL CONCAT function to concatenate two or more strings into a single string. Options to specify (PostgreSQL ODBC driver) Get help assembling a connection string that's just right. PostgreSQL Regexp Operator and Functions. Generally, people are using MD5 and SHA algorithm for password encryption, but both are easy to break and vulnerable, so we should not use this in our general practice. Regular expressions are easy to get started with, so let's jump right in. But not with branches (B|D) or character classes [BD] (at least in my tests on PostgreSQL 9. INSTR functions. It has the syntax regexp_replace (source, pattern, replacement [, flags ]). Postgres is a widely-used nickname for PostgreSQL. Character string operators are valid upon values of types char , varchar , and PostgreSQL's own text type. PostgreSQL String Functions at a glance : The PostgreSQL string functions can be used for manipulating and examining various type of queries independently or within a table. Hence, we need to explicitly cast the integer column to string as in the examples above. These functions search a string for a pattern specified by a regular expression, and return information about occurrences of the pattern within the string. PostgreSQL ensures automatic conversion from char(n) to varchar. but this will work only if for all rows you can convert this field to integer. 3, these functions would silently accept values of several non-string data types as well, due to the presence of implicit coercions from those data types to text. 4 after we are done) 2016-09-25 09:19 Regina Obe * [r15140] Document populate_topology_layer closes #3462 2016-09-25 07:32 Regina Obe * [r15139] Bring Tuning section up to date, by incorporating some of Mike Toews changes Add mention of configs to enable parallel queries Get. If you use aggregate functions you need to group your resultset. sslpasswordcallback = String. string_expression can be of a character or binary data type. I am looking at the 9. Use pg_escape_bytea() instead, or use the large object functions. In PostgreSQL 9. In Oracle empty strings and NULL values in string context are the same till latest versions. Mapping between this datatype and the database vendor type runs in both dir. This section describes functions and operators for examining and manipulating values of type bytea. The LENGTH function returns the number of bytes in some relational database systems such as MySQL and PostgreSQL. Note: Before PostgreSQL 8. Mathematical Functions and Operators Mathematical operators are provided for many PostgreSQL types. com | Email:info at java2s. There's a very rich set of PostgreSQL functions to process text — you can find them all in the string functions and operators documentation chapter — with functions such as overlay(), substring(), position() or. 5 introduced an optimization for sorting long strings of character data (key word "abbreviated keys"). This tutorial provides you the most commonly used PostgreSQL string functions that help you manipulate string data effectively. By Ron Peterson. Why use the LOWER and UPPER functions? Combine UPPER and LOWER in a Real-world use case. In PostgreSQL and Redshift, the operator widely used is the tilde (~). However if the type of connection string is PostgreSQL the connection to db does not work - getting exceptions from EF about errors connecting to database/host being null (according to Application Insides). Convert date to string using TO_CHAR() function. Most of these examples are fairly standard ANSI-SQL so should work on most relational databases such as PostGreSQL, MySQL, Microsoft SQL Server, Oracle, Microsoft Access. to_string, to_array functions - string <-> array functions with well NULL support; Hello I like function string_to_array and array_to_string. Some functions also exist natively for the bit-string types. The SQL standard has had support for arrays as a column type since 1999! Including functions to access, construct or create arrays. Devart ODBC Driver for PostgreSQL 3. The return type of the STRING_AGG() function is the string while the return type of the ARRAY_AGG() function is the array. String functions This page includes comparison tables which can be big and complex. The PostgreSQL substring function allows you to extract a substring from a string. Functions for dealing with a PostgresSQL connection string - iceddev/pg-connection-string. I'll keep using pg-0. Go to the Cloud SQL Instances page. PostgreSQL Views and Functions. This new version, like all other PostgreSQL versions, contains a number of optimizations, improvements and usability features. Unsupported PostgreSQL Functions Many functions that are not excluded have different semantics or usage. SQL SERVER uses the non-ANSI SQL + operator for string concatenation while PostgreSQL uses the ANSI SQL || SQL Server won't allow text + varchar concatenation and if your varchar is unlimited, you must call it varchar(MAX). At this point PostgreSQL is not able (yet?) to make those adjustments for you so some manual improvements will definitely help. PostgreSQL unlike Microsoft SQL Server, supports function name and argument overloading. PostgreSQL is case-sensitive for string comparisons. PostgreSQL nls_string and nls_value functions. Handling and Reporting ODBC Errors and Diagnostics Return Statuses. Compatible with PostgreSQL 8. Welcome to the PostgreSQL Wiki! This wiki contains user documentation, how-tos, and tips 'n' tricks related to PostgreSQL. Generic functions are invoked like all SQL functions, using the func attribute: select ([ func.